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Pollination is a critical process in date palms production series that affect yield and fruit quality. This study aimed to evaluate the effect of different pollination methods (spray pollen grain with zinc, boric or ascorbic acid solution) on yield and fruit quality of Barhy date palm. This study was conducted at Kom Ombo, Aswan Governorate, Egypt during 2019 and 2020 seasons. Results showed that most beneficial treatment in this concern is spraying female spathes with 0.5 to 1 g pollen grains plus 1 g zinc or ascorbic acid/L water which gave economical yield with good fruit quality. Moreover, it distinguished to save time, effort, labor, cost and more practical to it is a promising technique in the future [ABSTRACT FROM AUTHOR]

An experiment was conducted during the winter season of each of 2015/2016 and 2016/ 2017 at the Experimental field, Faculty of Agriculture, Zagazig University, Egypt in order to evaluate the response of caraway growth and yield under three rates of N:P:K:Mg at 13:5:26:3 ratios/ (0.0, 2.0 and 4.0 g/l) as foliar spray and three types of antioxidants (Control, salicylic acid, vitamin C and vitamin B1 as well as their combinations). The experiment was applied by a split-plot in randomized complete block design (RCBD) arrangement with three replications. Results proved the superiority of chemical fertilization as foliar spray via enhancing yield components of caraway plants in comparing with no application. Salicylic acid (SA), vitamin B1 (Vitam.B) and vitamin C (Vitam.C) at 100 ppm of each applied three times/season showed the best results in most of the studied growth parameters (plant height, number of leaves and branches per plant, total dry weight, root dry weight and root length) and yield components (number of umbels per plant and fruit yield per plant and per faddan) as compared with control. Accordingly, this study recommends the possibility of using antioxidants treatment (SA+ Vitam.B + Vitam.C) as an improving growth performance and yield components of caraway plants under chemical fertilization rate at 2 g/l. [ABSTRACT FROM AUTHOR]

This study was conducted during two successive seasons (2016/2017 first ratoon and 2017/2018 second ratoon) of Williams banana plants. The plants grown in a private banana orchard, where clay loam soil under flood irrigation system, at 3.5x3.5m apart located at Nakada district, Quena Governorate, Egypt. Forty eight stools each containing three plants were chosen to evaluate the effect of yeast applied as soil drench and spraying ascorbic acid (V.C) on growth, yield and fruit quality. These treatments were arranged in a randomized complete block design in split plot arrangement with three replicates. The obtained results could be summarized as follows. Ascorbic acid spraying significantly increased the length and circumference of pseudostem, leaf area and total leaf area/plant as well as percentage of N, P and K of leaves compared to unsprayed ones. Also, these treatments significantly increased the yield components and improved the fruit quality compared to unsprayed ones. Yeast application was very effective in enhancing all growth aspects, yield and fruit characteristics compared to untreated ones. All combinations of ascorbic acid spraying on the yeast treated plants resulted in a significant increament in all growth aspects, yield components and fruit quality as compared to check treatments. The best results regarding the growth and fruiting were obtained with ascorbic acid spraying (at 200 ppm) accompanied with yeast application (at 40 g/plant) compared to other tested treatments. It is evident from the foregoing results that the application yeast at 40 g/plant and ascorbic acid at 200 ppm application four times during growth season (April, June, August & October), singly or in combination improved the growth and yield of Williams banana plants. [ABSTRACT FROM AUTHOR]