The current investigation was carried out during 2018 and 2019 seasons to study the effect of some fertilizer practices on yield, fruit quality and some mineral content of Khalas date palm grown in a private farm, Luxor Governorate, Egypt. Results showed that significant improved due to use slow release fertilizers as well as comparing total soluble fertilizers in terms of vegetative growth and nutritional status yield, bunch weight and fruit quality during both seasons. Using 600 g of N and 300 g of K via slow release fertilizers form had improved the growth and nutrient status of date palms as well as increase the fertilization efficiency. Also, it could be suggested that fertilizing by 60 to 75 of RDN and RDK via slow release fertilizers to improve the nutrient status of palm and gave the high bunch weight and consequently high yield/palm. Moreover, these fertilization treatments via slow release form gave high yield with good fruit quality compared with using 100% of RDN and RDK via mineral source during both studied seasons. On the light of previous results, it could be concluded that Fertilizing the palm by 60 to 75% of recommended doses of fertilization via slow release form to get high yield with good fruit quality. In addition, reduce the environmental pollution and increase the fertilization efficiency.

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Fruit color development in table grapes growth and fruiting are affected by hot weather mainly in warm regions. Here, 2-year field study, during 2017/2018 and 2018/2019 seasons in a factorial experiment in randomized complete block design were conducted to study the effects of some of tested materials and time/stage of spraying on Flame Seedless grapevines grown in Upper Egypt and harvested during 15 th May to 10 th June. In this time, global and domestic markets of table grape are affected by quality of fruits focusing color in colored varieties. Thus, prices decrease considerably in the market. On other contrary, harvesting early (before mid of May) leads to at least a 50% increase in the total income. In this experiment methyl jasmonate and ABA are used at verasion stage followed by ethephon one time compared to spraying ethephon twice. all tested treatments are sprayed at different time/stages at 25 and 50 % colored bunched and the findings did not affect significantly on the yield components while using ABA or methyl jasmonate followed by ethephon one time improved berry quality in terms of berry color and firmness compared by spraying ethephon twice , on the other hand using methyl jasmonate and ABA affect significantly on reducing the uncolored and the best results were when spraying at 95 % berry softening approximately and 50% bunch coloring especially the methyl jasmonate. It could be recommended to use methyl jasmonate followed ethephon at 50% bunch coloring to improve berry and more coloring and keeping the berry quality after harvesting.

Grape mealybug consider the most universally important vineyard insect pest. Insecticides are the main strategy to grapevine insect control. The result showed that the recommended rate of Imidacloprid is succeeded in controlling of mealybug since its initial reduced of the infestation were 89.26, 84.21and 85.71 % for first season and 82.71, 82.94 and 83.56 % for second season for Flame seedless, Early sweet seedless and Sugraone seedless, respectively. Meanwhile, the total mean of reduction after 3,7, 14 and 30 days were 95.79, 64.83 and 72.82 % for first season and 85.20, 66.33 and 69.84 % for second season on Flame seedless, Early sweet seedless and Sugraone seedless, respectively. On the other hand, the total mean of reduction after 3,7, 14 and 30 days were 72.56, 80.40 and 82.50% for first season and 68.88, 76.13 and 75.56% for second season on Flame seedless, Early sweet seedless and Sugraone seedless, respectively. In addition, all of them are above 70% reduction. From these results, it should be suggested using some effective alternatives such as Palmito compound in controlling mealy bug incompatible program with chemical insecticides instead of conventional individuals' insecticides. The grapevine variety, Early sweet seedless showed the significant superiority in the quality traits. Under conditions of this investigation, the grapevine variety, Early sweet seedless was recorder the highest values for yield per vine, TSS and total sugar% in both seasons.

This study was conducted during 2018, 2019 and 2020 seasons, on 10 years old Flame Seedless grapevines, grown on the experimental vineyard of Research Station Agriculture, EL-Matana, Esna, Luxor, Egypt to study the effect of organic and bio-fertilization on vegetative growth, nutrient status, and fruiting of Flame Seedless grapevines. The experiment was arranged in a complete randomized block design with seven treatments and three replications two vine per each. The obtained results could be summarized as follow: Using the recommended dose of nitrogen (RDN) via 50 or 25% mineral plus 50 or 75% or 50% organic and bio-form significantly increased, pruning wood weight, number of leaves/shoot and leaf area as well as leaf total chlorophyll and leaf nutrient composition compared to use RDN via mineral N fertilizer alone. No significant differences on these traits due to use RDN via 50% mineral plus 50 organic or bio, double form or 25% N plus 75 bio-form and triple born. All combined fertilization treatments significantly increased the yield and improved the cluster and berry traits compared to use RDN via mineral source only. It is evident from the foregoing results that double form 50% mineral plus 50% either organic or bio or triple form (25% N plus, 75 organic and bio.) improved the vegetative growth, yield and berry quality. In addition, it minimized the production costs and reduced environmental pollution.

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The current research was set up during 2019 and 2020 seasons to appraisal some soft date palm (Samany, Zaghloul and Barhee) grown in Aswan governorate, Egypt. Under this study Vegetative gross properties and fruiting traits, as well as arithmetic and economic evaluation were studied.The present results cleared that Samany and Barhee date palm cultivars gave the best rating of generality investigated of vegetative growth characteristics in comparison to Zaghloul date palm cultivar. In the contrary, Zaghloul date palm gave the upper components of yield next by Barhee date palm, whereas Samany date palm gave the less value. No significant differences were found among Barhee and Zaghloul date cultivars in components of yield. Barhee cultivar get the best fruit quality next by Samany cultivar, whereas, Zaghloul cultivar gave the lowest one with insignificant differences with Samany date cultivars.From the numerally assessment of date palm cultivar, it can be coordinated in descending set as next: Barhee (92.5), Zaghloul (85.6) and Samany (79.5 units).These results clarified that Barhee and Zaghloul date palm are appear favorable to get a high crop with best quality of fruit compared to Samany date palm cultivar under Aswan conditions. In addition, preference of Barhee cultivar to the superiority of its price and demand for export.