Little is known about the response of pomegranate to the foliar application with nutrients and gibberellic acid. A randomized complete block design (RCBD) experiment was conducted on 40-years old Manfalouty pomegranate trees grown on Upper Egypt. The study aims to investigate the effect of foliar application with gibberellic acid (GA 3 ), potassium silicate (PS), zinc sulphate (ZS) and fetrilon compi (FC) which is a mixture of micronutrients on fruiting of pomegranate trees. All the tested treatments significantly (P< 0.05) improved the yield and fruit quality and reduced the fruit cracking percentage. GA 3 and FC spraying induced a 15 and 11% increase in the fruit yield and minimized the cracking percentage by 47 and 61% compared to the control treatment, respectively. It is recommended to spray Manfalouty pomegranate trees with micronutrients, potassium silicate, or zinc sulphate twice at mid of June and August to enhance the pomegranate yield and quality.
This investigation was carried out during two seasons i.e. 2016 and 2017 on Superior Seedless grapes cultivar grown at the Experimental Orchard, Faculty of Agriculture, Assiut University, Egypt. Ten combined treatments of GA 3 , urea, roselle and active dry yeast spraying at various stage of berry development were evaluated. The experimental vines were arranged in a complete randomized design. From the results of this investigation, it could be concluded that spraying with GA 3 seven times, once at pre-bloom (5 ppm), thrice at full-bloom (5 and 10 ppm) and other thrice when the berry at (6 mm) pea stage (30ppm). In addition , combined spraying GA 3 four times once at pre-bloom and thrice at full-bloom plus 1.5% active dry yeast when the berry at pea stage, as well as roselle at0.2% three times to obtain heavy and less compact cluster and hasten the ripening with fairly good Superior Seedless berries quality. In addition, it could be used urea and yeast as well as roselle extract instead of GA 3 in grape production to overcome the adverse GA 3 effects.
Pollination and thinning are considered among the important basic procedures for Madjool, Segae, and Khodry palms in terms of their effect on yield and fruit quality, in addition, regularizing the annual production of the date palm. The development of pollination technology, which leads to an acceptable level of fruits with the use of a small amount of pollen as well as economic thinning methods are necessary to improve the productivity of date palms, especially in dry conditions. This examination was carried out on Madjool, Segae, and Khodry date palms for the progressive seasons 2020 and 2021 in Dakhla Oasis, New Valley Governorate, Egypt. Pollination with 0.5 and 1.0 g of pollen grains supplemented with 100 gm sugar/L water as well as fruit thinning by removing 10, 20, 30, and 40% of fruit /spathe were done. The results showed that the use of pollen suspension at 0.5 g + 10% sugar solution as well as fruit thinning at 20 or 30% had a decrement percentage of bunch weight by about 5.65, 8.44 and 13.01 % over the control, as an average of the two studied seasons, respectively. The highest fruit weight (18.60, 19.48, and 20.87 g) were obtained from spraying the pollen suspension solution as well as removing 20 and 30% of the fruits, which resulted in an increment percentage of 20.00, 25. 68 and 34.65% over the control, respectively. Similarly, using pollen suspension and removing 20 or 30% of the fruits gave the highest percentages of TSS and sugar, while control gave the lowest percentage. It can be concluded that pollination with pollen grains at 0.5 g added to 100 gm sugar/L water or removing 30% of setting fruit produced a good crop with high fruit quality.
This study was carried out during two consecutive seasons of 2016/2017 and 2017/2018 on the third and fourth ratoons of Williams banana plants. The plants were grown in the experimental orchard of Al Azhar University., Assiut Governorate., Egypt. The experiment was set up in a split plot arrangement design. Bunches were sprayed twice (just after emergence of the last hand and one month later and thrice) with gibberellic acid (GA 3) and Aug. at a rate of 40 ppm Pachlobutrazol (PB) sprayed at rates of 2g and 4g /L at Aug.The obtained results revealed that spraying (GA 3) and pachlobutrazol (PB) led to increase bunch and finger weights the fruit characteristics There was an improvement of chemical fruit constituents in term of increasing total soluble solids (TSS %), sugars contents and decreasing the total acidity percentages due to spray of GA 3 or pachlobutrazol (PB) singly or interaction of them compared to the control treatment. Then, it could be concluded that spraying 40 ppm GA 3 thrice. As well as spraying pachlobutrazol (PB) at (2g) /L seems to be the promising treatment under this experiment conditions to get the best results with regard to yield and fruit quality.
Greenhouse experiments has been conducted during 2006 and 2007 season at Sakha Greenhouse Station, Kafr El-Sheikh to study the impact of different compost levels (crop residuals) on damping-off caused by Pythium ultimum, Fusarium solani and Sclerotinia sclerotiorum on growth productivity and quality of cucumber as well as their effect on powdery and downy mildew diseases .The applied compost levels were 0.68, 1.36, 2.05, 2.73 and 3.41 kg/m 2 while the control treatment was cattle manure fertilizers . Application of 0.68 and 1.36 kg/m 2 compost gave maximum protection against post emergence damping-off and reduced the disease incidence to 7.5 and 11.25%, respectively compared with the fungicide Topsin M70(1.25%). While, the compost levels of 2.73 & 3.41 kg/m 2 gave less effect in this respect. The levels of compost 0.68 &1.36 kg /m 2 were most effective in controlling powdery and downy mildew and 1.36 kg/m 2 recorded the best results of the plant growth, i.e. stem length, leaf area, number of branches and leaves, total chlorophyll as well as fresh and dry weight followed by the compost levels of 0.68, 2.73 and 3.41 kg/m 2, respectively. Data also showed that the highest increased in cucumber yield , number of fruits, diameter and length of fruits had been achieved when compost at the rate of 2.05 and1.36 kg/m 2 were applied.
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