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Effect of Pruning Levels on Yield and Fruit Quality of Melody (Blagratwo) Seedless Table Grape Cultivar
2023
Ali, Ali | Abdle Hamid, Nazmy | shaddad, Amin | Nasser, Mohamed
Three years old uniform vines for cv. "Melody syn. Blagratwo" seedless table grape were selected, and three levels of bud load were trimmed, namely 60, 72, and 78 buds/ vine. The findings revealed that vegetative growth traits, characteristics of yield and bunch quality were significantly affected by all different pruning levels of cane length in both seasons of this study. Highest bud load vines (78 buds/vine) produced the greatest yield and cluster number but had a negative effect on the percentage of bud behavior, shoot thickness, shoot length, weight of annual pruning (Kg/vine), cluster and berry quality parameters. In contrast, lowest vine bud load (78 buds/vine) had a better bud behavior, vegetative growth traits, cluster characteristics and berry characteristics but both bunch numbers and yield were reduced. In addition, vines pruned with bud load of 72 buds per vine significantly showed the best outcomes, since it successfully struck a balance be-tween features of vegetative growth, yield, cluster and berry physical and quality attributes in both seasons.
Show more [+] Less [-]STUDIES ON COMPATIBILITY, FRUIT SET AND FRUIT QUALITY BY DIFFERENT POLLINATORS IN ANNA APPLE CULTIVAR
2020
Mahmoud Maklad | Mai Anwar | نظمي عبد الغني | Nahla Awad
The apple (Malus domestica) is a member of the Rosaceae family. It is older than the rose in cultivation and is often referred to as the prince of the rose family. Pollen grains of Dorsett Golden, E25 and Ein Shemer were used to investigate their compatibility and incompatibility with Anna cultivar under the Egyptian climatic conditions during two successive experimental seasons of 2016 and 2017. The fluorescence microscope was used to determine the degree of pollen tube growth in style tissue after specific pollination treatments. Degree of self and cross compatibility and or incompatibility were determined, initial, and final fruit set percentage were calculated. Pollination treatments revealed that, pollens of the four apple cultivars exhibited high rate of the viability after 24 hr. in T.T.C test. Growth of pollen tube of the tested cultivars exhibited different pattern of compatibility, the pollen tubes of Dorsett Golden and Ein Shemer cultivars showed different levels of cross-compatibility when fertilized in Anna style tissue. The pollen tube of E25 cultivar grew slowly with heavy deposition of calluses along to the tube where its growth stopped in the lower part of Anna style four days after pollination. Therefore, they need pollinizer cultivars as for good fruit set. On the other hand, Anna self-pollination seemed to be self-incompatible and recorded lowest initial of fruit set percentage in the first and second seasons. The combinations of Anna × Dorsett Golden exhibited maximum percentage of initial and final fruit set in the two seasons followed by Ein Shemer pollens in both seasons. Insignificant differences were noted in fruit weight and fruit volume among all crosses. The highest acidity was found in hybrid Anna × Dorsett Golden in except in the first season TSS values of these crosses were not high and ranged between 11.83 % and 12.83 %.
Show more [+] Less [-]IMPROVING FRUIT SET, YIELD AND FRUIT QUALITY OF KHADRAWI DATE PALM CULTIVAR
2018
A. Moustafa | N. Abdel-Hamid | A. Abd El-Hamid | M. El-Sonbaty | S. Abd El-Naby
This experiment was carried out during 2015 and 2016 experimental seasons to investigate the effect of spraying with moringa extract at 3%, garlic extract at 3% or ascorbic acid at 300 ppm on fruit set, yield and fruit quality of Khadrawi date palm cultivar. Anyhow, bunches were sprayed at three times (3 hours before pollination then 4 and 8 weeks after pollination). The present results indicated that spraying date palm bunches with moringa extract or garlic extract recorded the highest initial fruit set in the first and second seasons, respectively. As well as, moringa extract gave the highest fruit retention and yield in both seasons. In addition, all treatments improved some fruit physical characteristics i.e. fruit weight, flesh weight, fruit volume and fruit length compared to the control treatment in the two studied seasons. Also, results showed that moringa extract or ascorbic acid increased TSS%, total sugars % and reducing sugars % in both seasons compared to the control. Meanwhile, the lowest fibers % was obtained by garlic extract in the two seasons. Also, all treatments had no significant effect on total acidity % and tannins content in both seasons.
Show more [+] Less [-]EFFECT OF VINE BUD LOAD ON BUD BEHAVIOR, YIELD, AND CLUSTER CHARACTERISTICS OF AUTUMN ROYAL SEEDLESS GRAPEVINES
2015
Abdle Hamid N. | Samah, I. Nasr | Korkar M.
This study was conducted through the seasons of 2013 and 2014 to determine the optimum bud loads/ vine for Autumn Royal seedless "grapevines. Three years old uniform vines were uniform chosen and pruned to four levels of bud load, namely (32, 42, 52 and 60 buds/ vine). With fruiting spur at 2, 3 and 4 buds per spur The results showed that the percentage of bursted buds was decreased significantly by increasing bud load /vine in the two seasons of the study. Data also indicated that 42 buds/ vine were more suitable for Autumn Royal seedlessgrapevines to produce good yield and fruit quality. On the other hand, 32 buds/vine or 60 buds/vine were unfavorable science it produced rather clusters. In addition, pruning Autumn Royal seedless "grapevines to 42buds /vine by leaving 21 spur with 2 eyes/spur or leaving 14 spur with 3 eyes per spur resulted a high yield and good quality, reduced cluster compactness and reduced shoot berries %, gave the greatest cluster weight, berry firmness, adherence, T.S.S and anthocyanin content. Increasing bud load increased number of cluster/vine and yield but reduced cluster weight. Vines pruned to 32 buds / vine gave the greatest C/N ratio of the canes. Whereas vines pruned to 60 buds / vine showed higher percent of T.A than the other levels of bud load and cane length.
Show more [+] Less [-]Effect of Pruning Levels on Yield and Fruit Quality of Melody (Blagratwo) Seedless Table Grape Cultivar
2023
Ali Ali | Nazmy Abdle Hamid | Amin shaddad | Mohamed Nasser
Three years old uniform vines for cv. "Melody syn. Blagratwo" seedless table grape were selected, and three levels of bud load were trimmed, namely 60, 72, and 78 buds/ vine. The findings revealed that vegetative growth traits, characteristics of yield and bunch quality were significantly affected by all different pruning levels of cane length in both seasons of this study. Highest bud load vines (78 buds/vine) produced the greatest yield and cluster number but had a negative effect on the percentage of bud behavior, shoot thickness, shoot length, weight of annual pruning (Kg/vine), cluster and berry quality parameters. In contrast, lowest vine bud load (78 buds/vine) had a better bud behavior, vegetative growth traits, cluster characteristics and berry characteristics but both bunch numbers and yield were reduced. In addition, vines pruned with bud load of 72 buds per vine significantly showed the best outcomes, since it successfully struck a balance be-tween features of vegetative growth, yield, cluster and berry physical and quality attributes in both seasons.
Show more [+] Less [-]IMPACT OF IRRIGATION WATER MANAGEMENT AND SILICON SPRAYING ON AVOIDING COLD INJURY AND IMPROVEMENT YIELD OF KITT MANGOS
2018
A. Gooda | N. Abd El-Hamid | A. Abo-Hadid | O. El-Behari
The present study was carried out during 2015 and 2016 seasons on Kitt mongo trees to evaluate the effect of three irrigation water management (4000 m3 of irrigation water were applied to the four physiological stages of mango tree growth as 15 & 20 & 40 & 25 % , 30 & 15 & 35& 20 % and 35 & 20 & 30& 15 % m3 / tree/ year, respectively) as well as four concentrations of potassium silicate on avoiding cold injury and improvement yield of kitt mango . Irrigation Mango tree by the second program water management (30, 15, 35 , 20) recorded The highest values of vegetative growth in terms of number of shoot /tree and lower values of leaves percentage affected with cold injury, Also, an evident increase in the content leaves of N & K elements , C/N ratio and final fruit set % total yield by divided irrigation water at the four physiological stages of mango trees (30, 15, 35, 20) was recorded compared with the other two water managements. No significant differences between the second and third irrigation water management programs (30%, 15%, 35%, 20% and 35%, 20%, 30%, 15%) on values of leaf area, P% and total carbohydrates as well as on TSS, acidity and L-ascorbic acid content of fruits . Spraying trees with potassium silicate in three times during the period from October to January at the rate of 1000 ppm give the highest values of quality characteristics at mango trees and their fruits. While sprayed with potassium silicate at 2000 ppm achieve moderate values of the mentioned characteristics It could be recommended from the obtained data that irrigation water management at the four physiological stages (30, 15, 35, 20) of Kitt mango trees and spraying 1000 ppm potassium silicate in dormancy period is considered a good treatment to avoid cold damage on leaves and fruits as well as in giving the highest yield and quality of kitt fruit.
Show more [+] Less [-]A COMPARISON STUDY ON YIELD AND FRUIT QUALITY OF SOME POMEGRANATE CULTIVARS UNDER ASSIUT GOVERNORATE CONDITIONS
2014
Shadia A. Abdel Hady
This work was carried out on six pomegranate cultivars namely: Wardy, Araby , Manfalouty , Nab El Gamal, Hhegazy, and Montakhab through two successive seasons grown in a private farm at Assuit government trees were about 13 years and planting distance was 5X5m . Assuit is governorate considered one of the most important pomegranate producers and exporters in Egypt. The yield and some fruit physical and chemical properties of six different pomegranate cultivars (Punica Granatum L.) were investigated. This investigation aimed to study tree yield and the main fruit characteristics of six commercial pomegranate cultivars. The average fruit yield / tree lies between 38.10–59.90 kg, fruit weight130.96– 399.77g, fruit volume 125.7–520 cm³, fruit diameter 6.23– 9.60 c fruit shape index 1.00–1.10 respectively . Fruit dry matter20.49 – 38.57, in addition, total soluble solid content was found between 8.00–16.67, titratable acidity ranged between 0. 25– 0.53, TSS / Acid ratio between 0.27–0.63, total sugars 9.13–% 11.86, reducing sugars 1.22%–5.80, respectively. Finally it could be concluded that, Manfalouty and Hegazy cultivars recorded most excellent physical, chemical and visual characteristics which are preferred.
Show more [+] Less [-]EVALUATION OF SOME MALE TYPES AS POLLINATORS FOR BARHI DATE PALM cv. GROWN IN EGYPT
2006
A.H Al-Hamoudi | A.M. El-Hammady | I.M Desouky | A . Abdel-Hamid
Four different date palm male types were chosen to evaluate which male could be recommended to use as a pollinator for Barhi date palm cv. grown in Egypt. Three male types namely Ghanamy, Fard and Boyr were grown in the Fruit Trees Experimental Station at Dibba, Fojaira, UAE, and the fourth male was an individual Sewy satellite seedling grown in Egypt. Number of spathe/palm; spathe weight, length, & width ; pollen grains weight / spathe ; average of strand length as well as pollen grains germination % were determined for each male date palm tree from each male type . Moreover, pollen grains from each male type were used as a pollinator to evaluate their effect on fruit set and fruit quality of Barhi date palm cv. This study was carried out during both 2004&2005 seasons. Data showed that both Ghanamy and Fard male type were superior in their morphological characters as compared with Boyr or Sewy satellite seedling male type. Boyr male type showed the lowest values of morphological characters. On the other hand, there were no great differences in pollen grains germination percentage. Moreover, the results clearly indicated that Ghanamy pollen recorded the highest significant fruit set percentage and bunch weight (Kg) in both seasons of study. While, Fard pollen produced the highest fruit weight (g), length, diameter, flesh weight& thickness and flesh %. Boyr and Sewy pollen showed the highest ratio of fruit length / diameter in both seasons. Data also revealed that dates that were picked from bunches pollinated with Fard pollen had the highest total soluble salts (T.S.S) value and the lowest tannins content.
Show more [+] Less [-]IMPROVING CANINO APRICOT TREES PRODUETIVITY BY FOLIAR SPRAY WITH BORON, GA3 AND ACTIVE DRY YEAST
2005
H Hassan | E Mostafa | Dorria Ahmed
The present investigation was carried out during two successive seasons of 2002 and 2003 on Canino Apricot trees budded on seedlings rootstock at a private orchard located at El-Khatatba district, Menofia Governorate Egypt. Trees were sprayed at full-bloom stage with boron, GA3 and active dry yeast at different concentration alone or in their combinations. Results showed that spraying Boron, GA3 and active dry yeast either singly or in combination caused a remarked promotion in leaf min-eral status, yield and fruit quality compared with control treatment Combined appli-cation solution of 400ppm Boric acid, 40ppm GA3 and 2% active dry yeast at full bloom stage gave the best results with regard to the yield and fruit quality of Canino Apricot.
Show more [+] Less [-]EFFECT OF FOLIAR APPLICATION WITH ALGAE AND MORINGA LEAVES EXTRACTS ON VEGETATIVE GROWTH, LEAF MINERAL CONTENTS, YIELD AND CHEMICAL FRUIT QUALITY OF PICUAL OLIVE TREES
2019
A. Hassan | N. Abd-Alhamid | Rawheya Aly | H. Hassan
This study was carried out during 2017 and 2018 seasons on adult Picual olive cv. (8 years old) in a private orchard located at Cairo Ismailia Desert Road, (about 80 Km from Cairo), Ismailia Governorate, Egypt. Trees are grown in sandy soil, under drip irrigation system, uniform in shape and received the common horticultural practices, therefore, this work aims to study the effect of spraying different concentrations and dates spray of algae and moringa leaf extract (MLE) for tow times on the vegetative growth, leaf mineral contents, yield and fruit chemical properties of Picual olive trees. Results indicated that all different spraying treatments of algae and moringa extract at different spraying dates had a positive effect on vegetative growth, leaf mineral contents, fruit set, yield and fruit chemical properties in comparison with the control. Treatments of algae extract at 0.4% + moringa leaves extract at 2% and algae extract at 0.4% + moringa leaves extract at 4% were the most effective treatments to increase vegetative growth, improve leaf mineral content, fruit set, yield and oil content. Thus, these treatments can be recommended for commercial use under similar conditions
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