eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
1
11
10.21608/ajas.2017.3903
3903
Original Article
Effect of Planting Date, Variety and their Interaction on Seed Yield and its Components of Egyptian Clover (Trifolium alexandrinum L.)
تأثیر میعاد الزراعة والصنف والتفاعل بینهما علی المحصول البذری ومکوناته
فی البرسیم المصری
This investigation was carried out to study the effect of temperature resulting from different planting dates during the stage of flowering and seed maturity and the effect of genotypes x environment interaction on seed yield and its components in some varieties of berseem clover (Trifolium alexandrinum L.). A set of six varieties (Serw-1, Gemmeiza 1, Giza-6, Sakha-4, Helally and Local variety) were sown on four planting dates (September 15th, October 15th, November 15th and December 15th) in randomized complete block design with four replicates for each planting date. Three cuts were taken after 70, 110, 145 days from sowing. The experiments were conducted during 2014/2015 and 2015/2016 seasons in experimental farm of Assiut University. Results revealed that the highest number of seeds/ inflorescence (48.1), seed setting (72.8%), 1000 seed weight (3.21 g) and seed yield (1.25 kg/plot) were obtained from sowing on the 15th September. This result due to seed production is taking place during the period from April to the Mid-June.
The Sakha-4 variety outyielded (1.07 kg/plot) other tested varieties. On the other hand, the local variety gave lowest yield (0.90 kg/plot) over all planting dates and seasons. The estimates of genotypic stability parameters (a and l) for seed yield showed that variety Sakha-4 was the highest seed yielding, but exhibited less stability (instable) in seed yield. While Helally and Serw-1 varieties were more stable. On the other hand, local variety showed lower seed yield and instability.
This investigation was carried out to study the effect of temperature resulting from different planting dates during the stage of flowering and seed maturity and the effect of genotypes x environment interaction on seed yield and its components in some varieties of berseem clover (Trifolium alexandrinum L.). A set of six varieties (Serw-1, Gemmeiza 1, Giza-6, Sakha-4, Helally and Local variety) were sown on four planting dates (September 15th, October 15th, November 15th and December 15th) in randomized complete block design with four replicates for each planting date. Three cuts were taken after 70, 110, 145 days from sowing. The experiments were conducted during 2014/2015 and 2015/2016 seasons in experimental farm of Assiut University. Results revealed that the highest number of seeds/ inflorescence (48.1), seed setting (72.8%), 1000 seed weight (3.21 g) and seed yield (1.25 kg/plot) were obtained from sowing on the 15th September. This result due to seed production is taking place during the period from April to the Mid-June.
The Sakha-4 variety outyielded (1.07 kg/plot) other tested varieties. On the other hand, the local variety gave lowest yield (0.90 kg/plot) over all planting dates and seasons. The estimates of genotypic stability parameters (a and l) for seed yield showed that variety Sakha-4 was the highest seed yielding, but exhibited less stability (instable) in seed yield. While Helally and Serw-1 varieties were more stable. On the other hand, local variety showed lower seed yield and instability.
https://ajas.journals.ekb.eg/article_3903_16f0eccc5179a0b264611d2aae1f2131.pdf
Egyptian clover
Trifolium alexandrinum L
planting dates
stability
genotype x environment interaction
seed yield
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
12
22
10.21608/ajas.2017.3904
3904
Original Article
Comparative Evaluation of Antimicrobial Activity and Functional Properties of Native and Esterified Legume Proteins
تقیم التاثیر المضاد للبکتریا والخصائص الوظیفیة لبعض البروتینات البقولیة الطبیعیة والمعدلة بالاسترة
Tow legume proteins (cowpea and common bean proteins) were isolated and esterified with methanol in the presence of hydrochloric acid for 10 h at 4°C to give esterification extent 82% and 79%; respectively. Esterification raised the pIs (iso-electric points) of legume proteins from pH 4 for the native legume proteins, to pH 6 in the case of cowpea protein and pH 8 in the case of common bean. Applying methylated proteins at four different concentrations (0.5, 0.75,1 and 2 mg/ml) to Petri dishes containing nutrient agar infected with two pathogenic Gram- negative (Enterobacter cloacae and Serratia marcescens) and Gram- positive bacteria (Listeria monocytogenes) gave rise to concentration-dependent inhibition zones.
Tow legume proteins (cowpea and common bean proteins) were isolated and esterified with methanol in the presence of hydrochloric acid for 10 h at 4°C to give esterification extent 82% and 79%; respectively. Esterification raised the pIs (iso-electric points) of legume proteins from pH 4 for the native legume proteins, to pH 6 in the case of cowpea protein and pH 8 in the case of common bean. Applying methylated proteins at four different concentrations (0.5, 0.75,1 and 2 mg/ml) to Petri dishes containing nutrient agar infected with two pathogenic Gram- negative (Enterobacter cloacae and Serratia marcescens) and Gram- positive bacteria (Listeria monocytogenes) gave rise to concentration-dependent inhibition zones.
https://ajas.journals.ekb.eg/article_3904_607164ade0cc96c9514ed920ffc0629e.pdf
protein esterification
legume proteins
Antibacterial activity
Functional properties
البروتين الأسترة
البروتينات البروتينية
النشاط المضاد للبکتيريا
خصائص وظيفية
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
23
37
10.21608/ajas.2017.3905
3905
Original Article
Removal of Fe+3 and Cu+2 Ions from Aqueous Solutions by Adsorption Using Peanut Hulls
ازالة کلا من ایونات الحدید والنحاس من المحلول المائی بالادمصاص باستخدام اغلفة الفول السودانی
The present study was conducted to evaluate the possibility of using peanut hulls for the removal of Fe+3and Cu+2 from aqueous solutions.This paper incorporates the effects of dose, concentration and pH.Adsorption of heavy metal on adsorbents was found to increase on decreasing initial concentration, the sorption capacity strongly increased with pH in the range 3-4. The results showed that the removal of heavy metals, such as Fe+3and Cu+2from aqueous solution was efficient using peanut hulls as bioadsorbent. The adsorption percentage of Fe+3and Cu+2 ions by peanut hulls were very high. The Langmuir isotherm model was the best to describe the experimental data. The maximum sorption capacity was found to be 79.28 and 96.58 mg/g for Fe+3 and Cu+2, respectively. Over all, the present findings suggest that peanut hulls are friendly environmental bioadsorbent, efficient and low cost biosorbent which represents an excellent potential for Fe +3 and Cu+2 removals from aqueous solutions.
The present study was conducted to evaluate the possibility of using peanut hulls for the removal of Fe+3and Cu+2 from aqueous solutions.This paper incorporates the effects of dose, concentration and pH.Adsorption of heavy metal on adsorbents was found to increase on decreasing initial concentration, the sorption capacity strongly increased with pH in the range 3-4. The results showed that the removal of heavy metals, such as Fe+3and Cu+2from aqueous solution was efficient using peanut hulls as bioadsorbent. The adsorption percentage of Fe+3and Cu+2 ions by peanut hulls were very high. The Langmuir isotherm model was the best to describe the experimental data. The maximum sorption capacity was found to be 79.28 and 96.58 mg/g for Fe+3 and Cu+2, respectively. Over all, the present findings suggest that peanut hulls are friendly environmental bioadsorbent, efficient and low cost biosorbent which represents an excellent potential for Fe +3 and Cu+2 removals from aqueous solutions.
https://ajas.journals.ekb.eg/article_3905_b6ded56d2377d5533caac2c33b4d3866.pdf
Fe+3
Cu+2
Peanut hulls
scanning electron microscopy (SEM)
Heavy metal removal
Biosorption
Langmuir isotherm model
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
38
58
10.21608/ajas.2016.3959
3959
Original Article
Improve the Yield and Quality of Red Roomy and Thompson Seedless Grape Cultivars
تحسین المحصول والجودة فی صنفی العنب الرومی الأحمر والطومسون عدیم البذور
Experiments were carried out at the Experimental Orchard of Assiut University, Faculty of Agriculture. The experiments aimed to overcome the looseness of berries as well as improving the yield and berry quality of Red Roomy grape cultivar by using Boron, Zinc and NAA. The study also aimed to reduce the cluster compactness by using GA3 and cluster thinning in order to improve the quality of Thompson Seedless grape cultivar.
The treatments significantly increased the initial fruit set (IFS) and decreased the berry drop percentage. The cluster numbers not significantly affected by various treatments. However, the treatments increased the yield over the control. The control vines gave the lowest yield among all the treatments. The present study showed that there were no significant differences between treatments on the cluster width. On the other hand, treatments exhibited significant differences comparing with the control in respect of the cluster height. The treatments except of spraying with NAA had significant differences comparing with the control in respect of the cluster weight. However, the control vines gave the lowest cluster weight during the two studied seasons. On the contrary, the control gave the highest weight of 100 berries. On the other hand, although the control produced the highest juice weight of 100 berries but the differences were not significant during the two seasons of study. There were no significant differences between the treatments in respect of TSS% during the two studied seasons. The sugar contents took the same trend of TSS%.
On the other hand, there were no significant differences between the treatments on the cluster number per vine of Thompson seedless grape cultivar. Yield weight significantly affected by GA3 application. The lowest yield obtained from the control. Data revealed that spraying the cluster with GA3 at 5 + 20 + 30 ppm gave the highest values of cluster width (cm) and height (cm). The clusters treated with GA3 at 5 + 20 + 30 ppm were the heaviest clusters among all the treatments and the differences between their values and the values of other treatments were significant during the two seasons of study. The weight of 100 berries and 100 berreis juice weight took the same trend of cluster weight. On the contrary of the previous results, the control and cluster thinning followed by GA3 at 5 ppm + thinning had the highest TSS% in the berry juice. Concerning the acidity percentage, the differences between the treatments mostly insignificant. GA3 application recorded also the least ratio of TSS/acid ratio, however, the other treatments significantly surpassed it in this respect. Cluster thinning gave the highest percentage of total sugars followed by GA3 at 5 ppm + thinning and then the control.
This study concluded that the beneficial effects of spraying boron and zinc during flowering to increase the berry set and decrease berry drop of Red Roomy grape cultivar. On the other hand; Gibberellic acid (GA3) spraying increased berry size, cluster weight and expand the cluster length of Thompson Seedless grape cultivar that suffering from cluster compactness. Cluster thinning can be used for increasing berry and cluster weight and improving the quality.
Experiments were carried out at the Experimental Orchard of Assiut University, Faculty of Agriculture. The experiments aimed to overcome the looseness of berries as well as improving the yield and berry quality of Red Roomy grape cultivar by using Boron, Zinc and NAA. The study also aimed to reduce the cluster compactness by using GA3 and cluster thinning in order to improve the quality of Thompson Seedless grape cultivar.
The treatments significantly increased the initial fruit set (IFS) and decreased the berry drop percentage. The cluster numbers not significantly affected by various treatments. However, the treatments increased the yield over the control. The control vines gave the lowest yield among all the treatments. The present study showed that there were no significant differences between treatments on the cluster width. On the other hand, treatments exhibited significant differences comparing with the control in respect of the cluster height. The treatments except of spraying with NAA had significant differences comparing with the control in respect of the cluster weight. However, the control vines gave the lowest cluster weight during the two studied seasons. On the contrary, the control gave the highest weight of 100 berries. On the other hand, although the control produced the highest juice weight of 100 berries but the differences were not significant during the two seasons of study. There were no significant differences between the treatments in respect of TSS% during the two studied seasons. The sugar contents took the same trend of TSS%.
On the other hand, there were no significant differences between the treatments on the cluster number per vine of Thompson seedless grape cultivar. Yield weight significantly affected by GA3 application. The lowest yield obtained from the control. Data revealed that spraying the cluster with GA3 at 5 + 20 + 30 ppm gave the highest values of cluster width (cm) and height (cm). The clusters treated with GA3 at 5 + 20 + 30 ppm were the heaviest clusters among all the treatments and the differences between their values and the values of other treatments were significant during the two seasons of study. The weight of 100 berries and 100 berreis juice weight took the same trend of cluster weight. On the contrary of the previous results, the control and cluster thinning followed by GA3 at 5 ppm + thinning had the highest TSS% in the berry juice. Concerning the acidity percentage, the differences between the treatments mostly insignificant. GA3 application recorded also the least ratio of TSS/acid ratio, however, the other treatments significantly surpassed it in this respect. Cluster thinning gave the highest percentage of total sugars followed by GA3 at 5 ppm + thinning and then the control.
This study concluded that the beneficial effects of spraying boron and zinc during flowering to increase the berry set and decrease berry drop of Red Roomy grape cultivar. On the other hand; Gibberellic acid (GA3) spraying increased berry size, cluster weight and expand the cluster length of Thompson Seedless grape cultivar that suffering from cluster compactness. Cluster thinning can be used for increasing berry and cluster weight and improving the quality.
https://ajas.journals.ekb.eg/article_3959_44ad6fba2e49ad0d9568ace793f85061.pdf
Vitisvinefera
berry quality
GA3
Thinning
Boron
zinc
الجوده-العنب الرومى-العنب الاحمر-العنب الطمسون عديم البذور
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
59
74
10.21608/ajas.2017.3907
3907
Original Article
Response of Manfalouty Pomegranate Trees to Foliar Application of Salicylic Acid
استجابة أشجار الرمان المنفلوطى للرش الورقى بحامض السلسلیک
This study was carried out during 2014 and 2015 seasons for examining the effect of different concentrations (50,100 and 200 ppm) and frequencies of application (once, twice or thrice) of salicylic acid on fruit splitting%, yield and fruit quality of Manfalouty pomegranate trees grown under Minia region conditions. Treating Manfalouty pomegranate trees with salicylic acid once, twice or thrice at 50 to 200 ppm was very effective in stimulating all growth aspects, leaf pigments, N, P, K, Mg, Ca, Zn, Fe, Mn and Cu, initial fruit setting% and fruit retention%, gross and marketable yields, physical and chemical characteristics of the fruits relative to the control treatment. The promotion was materially associated with increasing concentrations from 50 to 200 ppm and frequencies of application from once to thrice. Fruit shape, fruit pomace% and reducing sugars were unaffected with salicylic acid treatments. Fruit splitting % was greatly declined with salicylic acid treatments. Carrying out two sprays of salicylic acid at 100 ppm at growth start and again just after fruit setting was responsible for controlling fruit splitting % and improving yield and fruit quality of Manfalouty pomegranate trees grown under Minia region conditions.
This study was carried out during 2014 and 2015 seasons for examining the effect of different concentrations (50,100 and 200 ppm) and frequencies of application (once, twice or thrice) of salicylic acid on fruit splitting%, yield and fruit quality of Manfalouty pomegranate trees grown under Minia region conditions. Treating Manfalouty pomegranate trees with salicylic acid once, twice or thrice at 50 to 200 ppm was very effective in stimulating all growth aspects, leaf pigments, N, P, K, Mg, Ca, Zn, Fe, Mn and Cu, initial fruit setting% and fruit retention%, gross and marketable yields, physical and chemical characteristics of the fruits relative to the control treatment. The promotion was materially associated with increasing concentrations from 50 to 200 ppm and frequencies of application from once to thrice. Fruit shape, fruit pomace% and reducing sugars were unaffected with salicylic acid treatments. Fruit splitting % was greatly declined with salicylic acid treatments. Carrying out two sprays of salicylic acid at 100 ppm at growth start and again just after fruit setting was responsible for controlling fruit splitting % and improving yield and fruit quality of Manfalouty pomegranate trees grown under Minia region conditions.
https://ajas.journals.ekb.eg/article_3907_1ffaa7b5a732ccd329bf9ce798d17390.pdf
Salicylic acid
Manfalouty pomegranate trees
yield
fruit quality
fruit splitting
: حامض السلسليک – أشجار الرمان المنفلوطى – کمية المحصول – خصائص الجودة للثمار – تشقق الثمار
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
75
87
10.21608/ajas.2017.3909
3909
Original Article
Effect of Dormex, Fructose and Methionine Spraying on Bud Dor-mancy Release of "Superior" Grapevines
تأثیر رش الدورمیکس والفرکتوز والمیثونین علی کسر سکون براعم شجیرات العنب السوبریور
This study was carried out during the two successive seasons 2015 and 2016 on 13 years old "Superior" grapevines to study the effect of spraying fructose (3, 5%), methionine (3, 5%) and hydrogen cyanamide 5% (Dormex) on bud dormancy release of "Superior" grapevines. Cyanamide is frequently used for grape bud dormancy release. However, those chemicals are potentially harmful to humans. In this study, we used substances that are less toxic to the environment and grape growers, such as fructose and methionine to determine their effects on "Superior" grape bud break. All treatments significantly improved the percentage of bud break, fruiting buds and yield, as well as the advancement of the harvest date and improving the berry quality compared to untreat ones (control). Also, all treatments induce gradually increased bud contents of IAA and GA3 and a gradual decrease of ABA from treated date towards buds burst compared to untreated ones. Dormex spraying gave the highest values of studied traits compared to other treatments. No significant differences were found among 5% dormex and 3% fructose spraying. Hence, 3% fructose shows potential for use as a commercial bud break and improves superior grapes fruiting
This study was carried out during the two successive seasons 2015 and 2016 on 13 years old "Superior" grapevines to study the effect of spraying fructose (3, 5%), methionine (3, 5%) and hydrogen cyanamide 5% (Dormex) on bud dormancy release of "Superior" grapevines. Cyanamide is frequently used for grape bud dormancy release. However, those chemicals are potentially harmful to humans. In this study, we used substances that are less toxic to the environment and grape growers, such as fructose and methionine to determine their effects on "Superior" grape bud break. All treatments significantly improved the percentage of bud break, fruiting buds and yield, as well as the advancement of the harvest date and improving the berry quality compared to untreat ones (control). Also, all treatments induce gradually increased bud contents of IAA and GA3 and a gradual decrease of ABA from treated date towards buds burst compared to untreated ones. Dormex spraying gave the highest values of studied traits compared to other treatments. No significant differences were found among 5% dormex and 3% fructose spraying. Hence, 3% fructose shows potential for use as a commercial bud break and improves superior grapes fruiting
https://ajas.journals.ekb.eg/article_3909_4892ba8a4ade91c8f53406d39ababcd5.pdf
dormancy
Grapevines
Fructose
methionine
Dormex
السکون
الکرمة
الفرکتوز
ميثيونين
دورميکس
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
104
114
10.21608/ajas.2017.3911
3911
Original Article
Effects of Spraying Yeast, Algae and Fish Oil on Growth and Fruiting of Ruby Seedless Grapevines
تأثیر رش الخمیرة والطحالب وزیت السمک علی نمو وإثمار کروم العنب الروبی اللابذری
The experiment was conducted during the two successive seasons of 2015 and 2016 on Ruby Seedless grapevines grown in the Experimental Orchard, Faculty of Agriculture, Assiut University. This investigation was carried out to study the effect of spraying yeast, algae and fish oil on vegetative growth, nutrient status and fruiting. The experiment was set up in a randomized complete block design with three replicates, one vine per each. The obtained results could be summarized as follows:
- Pruning wood weight, leaf area and its nutritional status significantly increased with spraying yeast, algae and fish oil compared to unsprayed ones. Spraying yeast combined with algae plus fish oil at half concentration of single spraying gave the maximum values of these aspects.
- Spraying yeast combined with algae and fish oil gave the highest cluster number, heaviest clusters and yield/vine compared to the other spraying treatments and unsprayed ones. No significant differences were observed among double spraying form or triple ones.
- All yeast, algae or fish oil treatments significantly improved the berry quality in terms of increasing berry weight, total soluble solids %, reducing sugars % and skin berry anthocyanin and decreasing titratable acidity % compared to unsprayed ones. The present study concluded that carrying out sprays of mixture of 5 g/L yeast, 0.5 g/L algae or 0.5 ml/L fish oil improved the growth and nutritional status of vines, in addition get high yield with good cluster and berry attributes.
The experiment was conducted during the two successive seasons of 2015 and 2016 on Ruby Seedless grapevines grown in the Experimental Orchard, Faculty of Agriculture, Assiut University. This investigation was carried out to study the effect of spraying yeast, algae and fish oil on vegetative growth, nutrient status and fruiting. The experiment was set up in a randomized complete block design with three replicates, one vine per each. The obtained results could be summarized as follows:
- Pruning wood weight, leaf area and its nutritional status significantly increased with spraying yeast, algae and fish oil compared to unsprayed ones. Spraying yeast combined with algae plus fish oil at half concentration of single spraying gave the maximum values of these aspects.
- Spraying yeast combined with algae and fish oil gave the highest cluster number, heaviest clusters and yield/vine compared to the other spraying treatments and unsprayed ones. No significant differences were observed among double spraying form or triple ones.
- All yeast, algae or fish oil treatments significantly improved the berry quality in terms of increasing berry weight, total soluble solids %, reducing sugars % and skin berry anthocyanin and decreasing titratable acidity % compared to unsprayed ones. The present study concluded that carrying out sprays of mixture of 5 g/L yeast, 0.5 g/L algae or 0.5 ml/L fish oil improved the growth and nutritional status of vines, in addition get high yield with good cluster and berry attributes.
https://ajas.journals.ekb.eg/article_3911_359dd9577b216c105920456eed3045e9.pdf
yeast
algae
fish oil
spraying
Ruby Seedless grapevines
الخميرة
الطحالب
زيت السمک
الرش
روبي بذور الکرمة
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
115
126
10.21608/ajas.2017.3912
3912
Original Article
Response of Bent Aisha and Sewy Date Palm to some Fruit Thinning Treatments
استجابة نخیل البلح بنت عیشة والسیوى لبعض معاملات خف الثمار
Response of yield and fruit quality of Sewy and Bent Aisha date palms to bunches and strands thinning were studied in 2015 and 2016 seasons. Bunches thinning was carried out by adjusting the number of bunches per palm tree to 7, 8 and 10 bunches, where the control was the latter one. The ten bunches/palm, however, were thinned by removing 20 or 30% of strand/bunch as well as 20, 30 or 40% of fruit numbers/strand. The obtained results showed that reducing bunch numbers/palm to either 7 or 8 bunches significantly increased the bunch weight in alliance with 10 bunches/palm. On the other hand, such reducing significantly decreased the yield/palm. In addition, reducing strand number/bunch to either 70 or 80% of strands/bunch as well as 70 or 60% fruits/strand significantly decreased the bunch weight and yield of Sewy and Bent Aisha palms, respectively comparing to the unthinned ones. A remarkable promotion on fruit quality was observed due to performing fruit thinning in alliance to unthinning. Thinning either bunches or strands as well as fruits significantly increased the fruit weight, size and flesh percentage comparing to the unthinning. Fruit thinning also significantly improved the fruit chemical properties in terms of increasing the total soluble solids and sugar contents compared to the unthinning treatment. It can be concluded that thinning by removing 20-30% of strands/bunch as well as 20-30 of fruits number/strand achieved on good fruit quality of Sewy and Bent Aisha date palms with a relation suitable yield/palm.
Response of yield and fruit quality of Sewy and Bent Aisha date palms to bunches and strands thinning were studied in 2015 and 2016 seasons. Bunches thinning was carried out by adjusting the number of bunches per palm tree to 7, 8 and 10 bunches, where the control was the latter one. The ten bunches/palm, however, were thinned by removing 20 or 30% of strand/bunch as well as 20, 30 or 40% of fruit numbers/strand. The obtained results showed that reducing bunch numbers/palm to either 7 or 8 bunches significantly increased the bunch weight in alliance with 10 bunches/palm. On the other hand, such reducing significantly decreased the yield/palm. In addition, reducing strand number/bunch to either 70 or 80% of strands/bunch as well as 70 or 60% fruits/strand significantly decreased the bunch weight and yield of Sewy and Bent Aisha palms, respectively comparing to the unthinned ones. A remarkable promotion on fruit quality was observed due to performing fruit thinning in alliance to unthinning. Thinning either bunches or strands as well as fruits significantly increased the fruit weight, size and flesh percentage comparing to the unthinning. Fruit thinning also significantly improved the fruit chemical properties in terms of increasing the total soluble solids and sugar contents compared to the unthinning treatment. It can be concluded that thinning by removing 20-30% of strands/bunch as well as 20-30 of fruits number/strand achieved on good fruit quality of Sewy and Bent Aisha date palms with a relation suitable yield/palm.
https://ajas.journals.ekb.eg/article_3912_2690378e0ec3b14be1a693fd125791d1.pdf
fruit thinning
yield
fruit quality
date palm
الفاکهة ترقق
الغلة
جودة الفاکهة
النخيل التمر
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
127
138
10.21608/ajas.2017.3914
3914
Original Article
Effects of Exogenous Salicylic Acid on Morphological and Biochemical Characteristics of Jatropha Curcas L. Irrigated with Saline Water
تأثیر الاضافة الخارجیة لحمض السالسیلک علی الخصائص المورفولوجیة والکیمیائیة لنبات الجتروفا المروی بماء مالح
Salinity is one of the major rate-limiting to crop productivity. A field study was conducted at two developmental stages of Jatropha curcas L. namely: the juvenile stage (1-2 years) and the early mature stage (3-4 years). Three levels of water salinity were prepared by diluting sea water (Suez Canal water) to give 2.3, 4.7 and 7.0 dSm-1, in addition to fresh water (0.32dSm-1). Jatrophaplants were foliar sprayed with three levels of salicylic acid (0.0, 5.0 and 10 mM). On thejuvenile stage, the obtained results indicated that the most effective treatment for vegetative growth characters such as total leaf area (TLA); leaf relative water content (RWCL); relative growth rate (RGR) and leaf dry weight (LDW) was performed when Jatropha plants were irrigated with fresh water, without significant difference, than that irrigated plants with either 2.3 or 4.7 dSm-1. Application of 5.0 mM salicylic acid (SA) increased RGR, TLA and LDW for plants irrigated with saline water at 4.7 dSm-1 as compared to either 0.0 mM or 10 m M SA. On the early mature stage, application of 5.0 mM SA had a positive effect on both vegetative characters and seed yield for 4.7dSm-1 salinity treatments as compared to control treatment. On the other hand, values of RWCL indicated that there was no water deficit in leaves of treatments irrigated with saline water or control. This indicates that application of SAmay minimize salinity stress. Foliar application of SA effectively increased chlorophyll. Generally, spraying jatropha shrubs with SA had a positive effect in reducing the negative impact of water salinity.
Salinity is one of the major rate-limiting to crop productivity. A field study was conducted at two developmental stages of Jatropha curcas L. namely: the juvenile stage (1-2 years) and the early mature stage (3-4 years). Three levels of water salinity were prepared by diluting sea water (Suez Canal water) to give 2.3, 4.7 and 7.0 dSm-1, in addition to fresh water (0.32dSm-1). Jatrophaplants were foliar sprayed with three levels of salicylic acid (0.0, 5.0 and 10 mM). On thejuvenile stage, the obtained results indicated that the most effective treatment for vegetative growth characters such as total leaf area (TLA); leaf relative water content (RWCL); relative growth rate (RGR) and leaf dry weight (LDW) was performed when Jatropha plants were irrigated with fresh water, without significant difference, than that irrigated plants with either 2.3 or 4.7 dSm-1. Application of 5.0 mM salicylic acid (SA) increased RGR, TLA and LDW for plants irrigated with saline water at 4.7 dSm-1 as compared to either 0.0 mM or 10 m M SA. On the early mature stage, application of 5.0 mM SA had a positive effect on both vegetative characters and seed yield for 4.7dSm-1 salinity treatments as compared to control treatment. On the other hand, values of RWCL indicated that there was no water deficit in leaves of treatments irrigated with saline water or control. This indicates that application of SAmay minimize salinity stress. Foliar application of SA effectively increased chlorophyll. Generally, spraying jatropha shrubs with SA had a positive effect in reducing the negative impact of water salinity.
https://ajas.journals.ekb.eg/article_3914_762c069fe3a9fa5740e943dd9cfbbe5c.pdf
Jatropha curcas
physic nut
physic nut oil
Salicylic acid
sea water, irrigation
biofuel plant
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
139
156
10.21608/ajas.2017.3915
3915
Original Article
Classification of Soils East of the Shatt Al-Arab Area and Assess their Agricultural Purposes Using Technologies for the Remote Sensing
تصنیف ترب منطقة شرق شط العرب وتقییم قابلیتها للأغراض الزراعیة بالاستعانة بتقانات الاستشعار عن بعد
This study was conducted to investigate the Morphological, physical and chemical properties of some soils in study area in province of Basrah, using Remote sensing Technique Satellite image Land Sat 8 OLI, Contour line and Geographic Information System (GIS) to delineate the land form units in area, which was checked and completed through field observation to generate a preliminary soil Mapping units. Ten profiles were taken to represent the different mapping units. The process of land evaluation using the proposals of Sys et al., (1993) requires information about the land and climate characteristics and their conformity with the requirements of crops for these proposals. The results indicated that the lands of the study area are classified according to their suitability for the production of selected crops as Suitable (S1), Moderately Suitable (S2) to cultivate Wheat and Barley with 34.58% and 65.42% respectively. The main limiting factorsare the salinity factor, followed by calciumcarbonate content factor.
This study was conducted to investigate the Morphological, physical and chemical properties of some soils in study area in province of Basrah, using Remote sensing Technique Satellite image Land Sat 8 OLI, Contour line and Geographic Information System (GIS) to delineate the land form units in area, which was checked and completed through field observation to generate a preliminary soil Mapping units. Ten profiles were taken to represent the different mapping units. The process of land evaluation using the proposals of Sys et al., (1993) requires information about the land and climate characteristics and their conformity with the requirements of crops for these proposals. The results indicated that the lands of the study area are classified according to their suitability for the production of selected crops as Suitable (S1), Moderately Suitable (S2) to cultivate Wheat and Barley with 34.58% and 65.42% respectively. The main limiting factorsare the salinity factor, followed by calciumcarbonate content factor.
https://ajas.journals.ekb.eg/article_3915_ec60a80cf52fa8487572fba6c35c93e7.pdf
Remote Sensing
Land suitability
Geographic Information System
الاستشعار عن بعد
ملائمة الاراضي
نظم المعلومات الجغرافية
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
157
166
10.21608/ajas.2017.3922
3922
Original Article
Magnetic Water and Chemical Substances Impact on Growth Parame-ters and Yield Components of Onion Crop under Assiut Conditions
تأثیر الماء الممغنط والمواد الکیمیائیة على صفات النمو، المحصول ومکوناتة فى محصول البصل تحت ظروف اسیوط
The experiments of this study were conducted to investigate the effect of magnetized water and two other chemical substances thatare kown as Agro promotor1 (substance No.48) and Agro promotor2 (substance No.50) on growth, yield and chemical composition of onion variety Giza 6. The sesubstances were obtained from Cairo University. Result revealed that growth parameters, yield and its component and chemical contents increased with using both of magnetic water and Agro promotor1 (substance No.48) at concentration of 3 ml/l comparing with control (untreated) treatment. Using magnetized water and Agro promotor1 (substance No.48) at concentration of 3 ml/l induced positive significant effect on plant height and weight, number of leaves/plant and bulb diameter as well as significantly improved neck and bulb diameters, bulb weight, total soluble soiled, total yield and marketable yield percentage than plants of control treatment which showed an increase in percentage of bolters, in both season. In general, it might be concluded that application of each of magnetized water and Agro promotor1 (substance No.48) treatments proved to be good technology to enhance growth, yield and quality when compare with untreated treatment. The marketable yield was increased by 30% as compared with control treatment by using magnetized water and increased by 22-235% when substance No.48 at concentration of 3 ml/l was used. The increase in total yield ranged from 12-15.4% when using magnetized water and was 14-15.4% when substance No.48 at concentration of 3 ml/l compared with control treatment. This study recommends using magnetized water to obtain the highest marketable yield and the lowest percentage of bolters. In case of magnetized water un-available, Agro promotor1 (substance No.48) at concentration of 3 ml/l can be applied
The experiments of this study were conducted to investigate the effect of magnetized water and two other chemical substances thatare kown as Agro promotor1 (substance No.48) and Agro promotor2 (substance No.50) on growth, yield and chemical composition of onion variety Giza 6. The sesubstances were obtained from Cairo University. Result revealed that growth parameters, yield and its component and chemical contents increased with using both of magnetic water and Agro promotor1 (substance No.48) at concentration of 3 ml/l comparing with control (untreated) treatment. Using magnetized water and Agro promotor1 (substance No.48) at concentration of 3 ml/l induced positive significant effect on plant height and weight, number of leaves/plant and bulb diameter as well as significantly improved neck and bulb diameters, bulb weight, total soluble soiled, total yield and marketable yield percentage than plants of control treatment which showed an increase in percentage of bolters, in both season. In general, it might be concluded that application of each of magnetized water and Agro promotor1 (substance No.48) treatments proved to be good technology to enhance growth, yield and quality when compare with untreated treatment. The marketable yield was increased by 30% as compared with control treatment by using magnetized water and increased by 22-235% when substance No.48 at concentration of 3 ml/l was used. The increase in total yield ranged from 12-15.4% when using magnetized water and was 14-15.4% when substance No.48 at concentration of 3 ml/l compared with control treatment. This study recommends using magnetized water to obtain the highest marketable yield and the lowest percentage of bolters. In case of magnetized water un-available, Agro promotor1 (substance No.48) at concentration of 3 ml/l can be applied
https://ajas.journals.ekb.eg/article_3922_09382d946cd8576e79b80edb19abb8df.pdf
bulbing ratio
bolters
chemical content
marketable yield
TSS%
Yield quality
بولبينغ
المحتوى الکيميائي
العائد التسويقي
تسس
جودة الغلة
eng
Assiut University, Faculty of Agriculture
Assiut Journal of Agricultural Sciences
1110-0486
2356-9840
2017-04-01
48
2
167
176
10.21608/ajas.2017.3970
3970
Original Article
Seed Chilling Enhances Head Earliness and Yield of Artichoke (Cynara scolymus L.) under Assiut Conditions
معاملات تبرید البذور قبل الزراعة تحسن المحصول والتبکیر فى الخرشوف تحت ظروف اسیوط
Subjection of seeds to a chilling pretreatment has been reported to enhance crop yield particularly earliness in number of vegetable crops including seed-grown (annual) globe artichoke. Therefore, the current study was carried out to assess the impact of seed chilling pretreatment on the production of seed-propagated globe artichoke in two cultivars (EL-Balady and Chinese) under Assiut conditions. Four seed pretreatments were utilized. These were seeds imbibed in water for 24 h and subjected to chilling at 4-5 0C for 0 (positive control), 10 and 15 d, in addition to untreated seeds (negative control). These seed pretreatments were scheduled so as to be simultaneously ready at the time of sowing. A field experiment was carried out to test these treatments during 2014/2015 and 2015/2016 winter seasons at the Experimental Farm of Faculty of Agriculture, Assiut University, Assiut, Egypt. Data revealed an influential effect for seed chilling on growth, earliness and yield of artichoke. Comparing to plants of both control treatments, imbibed seeds which were subjected to chilling at 4-5˚C for 15 d gave the greatest reduction in number of days to form heads and highest early head yield. Average head weight, number of heads/plant and head diameter and height were increased while total yield was elevated. This pre-sowing seed chilling treatments increased yield by 22.5% and 40.3% relative to positive and negative controls, respectively, on average. The reduction in the number of days to develop harvestable inflorescences ranged from 21 d to 23 d comparing with the positive and negative controls, respectively, on average. Apparently, seed chilling pretreatment may be usefully applied to overcome the delay in head formation, due to insufficient natural chilling under Assiut conditions, while elevating total head yield and expanding production season.
Subjection of seeds to a chilling pretreatment has been reported to enhance crop yield particularly earliness in number of vegetable crops including seed-grown (annual) globe artichoke. Therefore, the current study was carried out to assess the impact of seed chilling pretreatment on the production of seed-propagated globe artichoke in two cultivars (EL-Balady and Chinese) under Assiut conditions. Four seed pretreatments were utilized. These were seeds imbibed in water for 24 h and subjected to chilling at 4-5 0C for 0 (positive control), 10 and 15 d, in addition to untreated seeds (negative control). These seed pretreatments were scheduled so as to be simultaneously ready at the time of sowing. A field experiment was carried out to test these treatments during 2014/2015 and 2015/2016 winter seasons at the Experimental Farm of Faculty of Agriculture, Assiut University, Assiut, Egypt. Data revealed an influential effect for seed chilling on growth, earliness and yield of artichoke. Comparing to plants of both control treatments, imbibed seeds which were subjected to chilling at 4-5˚C for 15 d gave the greatest reduction in number of days to form heads and highest early head yield. Average head weight, number of heads/plant and head diameter and height were increased while total yield was elevated. This pre-sowing seed chilling treatments increased yield by 22.5% and 40.3% relative to positive and negative controls, respectively, on average. The reduction in the number of days to develop harvestable inflorescences ranged from 21 d to 23 d comparing with the positive and negative controls, respectively, on average. Apparently, seed chilling pretreatment may be usefully applied to overcome the delay in head formation, due to insufficient natural chilling under Assiut conditions, while elevating total head yield and expanding production season.
https://ajas.journals.ekb.eg/article_3970_ca71589c2473ecbc64feb1790863550c.pdf
cultivars
flower head
Pre-sowing treatments
yield components
Yield quality
vernalization
والأصناف
ورأس الزهور
والعلاجات ما قبل البذر
ومکونات العائد
وجودة الغلة
فيرناليزاشيون