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The present investigation was conducted on an experimental farm at the El-Kanater Horticultural Research Station in Qayubeia Governorate, Egypt during the 2018 and 2019 experimental seasons. The banana Williams cultivar were plant materials for this research, grown in clay loamy soil and the mates (plantation holes) were 3×4 meters apart under the flood irrigation system. Anyhow, Herosten the commercial name was the source of auxin used in this investigation. This compound contains (1.5 % NAA; 1.5 NAD and 1.5 % NAO), sprinkles were added sprinkles monthly five times during the period from first July to first November at a rate of 0.25, 0.375, 0.50 and 0.625 g per liter. Taking into consideration that sprays treatments were applied covering the whole bunch of each plant, whereas 0.5 liters was found to be sufficient in this concern to study the effect of different concentrations of Herosten sprays on productivity and fruit quality of Williams banana plants. Definitively, it can be shown from the results obtained that, spraying of Williams banana plants grown under similar environmental conditions and horticulture practices adopted in the current experiment with Herosten (auxin) at 0.375 g per liter and/or Herosten (auxin) at 0.50 g per liter is a beneficial method for enhancing production and fruit quality. In comparison, the lowest values of most of the parameters under investigation were typically associated with the control (water spray). [ABSTRACT FROM AUTHOR]

This work was carried out at the sandy soil of El-Khatatba region, Minofia Governorate, Egypt, through the two successive seasons of 2016 and 2017 to study the effect of organic fertilization combined with chemical fertilizer in presence of bio fertilizer on growth, yield, quality and nutritional status of banana Grande Naine cultivar. Mother plants were planted at 3×2 m apart in March 2015 and two suckers were selected per each hole and the others were removed. The obtained results showed that, the highest values of pseudostem height, pseudostem circumference, leaf area and assimilation area per plants were scored by T1 recommended dose of chemical fertilization (RD), followed in descending order by T4 treatment (75% RD+21kg compost+5ml bio./plant) with non-significant differences between them in the two seasons. The highest values of bunch length, fruits yield per fed., the thickest bunch, the heaviest bunch, the highest number of fingers/hand and the heaviest hand were scored by T1 treatment, followed in descending order by T4 treatment in the two seasons. The highest values of finger length, finger diameter and finger weight as well as the richest fruit pulp total sugars % and T.S.S. % were recorded by T4, followed by T7 (75% RD+45g humic+ 5ml bio./plant) in the two seasons. The heaviest pulp weight was obtained by those received T4 treatment, followed in descending order by T7 treatments, whereas the highest pulp/peel ratio was registered by T7 and T4 treatments in the two seasons. Banana plants received the full dose of chemical fertilization (100% RD) is being the most promising one for inducing the greatest leaf total carbohydrates, N, P and K percentage, followed in descending order by T4 and T7 treatments without significant difference between them in the two seasons. [ABSTRACT FROM AUTHOR]

The study was executed from the period of 2014 to 2015 seasons at the tissue culture laboratory of the Horticulture department, Faculty of Agriculture - Assiut University In vitro grown banana plantlets of Grand Nain and Zeev cultivars were treated with NaCl at 0,30,60,120, and 200 mM/L to study the effect of salinity stress on the plantlets or with PEG at 0,10,20,30, and 40g/L for drought investigation. The obtained results could be concluded as follow: 1-Effect of salinity: Plantlet height, fresh weight, dry weight and number of leaves/plantlet significantly decreased by increasing the NaCl concentration from Zero to 200 mM/L for both tested cultivars during 2014 and 2015 season. Total chlorophyll and K+ content significantly decreased, while sodium content significantly increased by increasing NaCl concentrations as compared with untreated plantlets (control). 2- Effect of drought: The effect of PEG at different concentrations took approximately the same tendency as NaCl concentrations concerning the vegetative and chemical characterestcs of both Grand Nain and Zeev plantlets during both investigated seasons. [ABSTRACT FROM AUTHOR]

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