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Subject: Horticulture × Author: Monika × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of foliar application of chemicals on yield, quality and shelf life of ber (Zizyphus mauritiana lamk.) cv. Apple ber
    (CCSHAU, Hisar, 2023-05) Monika; Baloda, Satpal
    The investigation entitled “Effect of foliar application of chemicals on yield, quality and shelf life of ber (Zizyphus mauritiana Lamk.)” was conducted at Experimental Orchard of Department of Horticulture, CCS Haryana Agricultural University, Hisar during the year 2022-23. Thirty nine uniform trees of ber cv. Apple ber were selected and foliar application of different concentrations of potassium sulphate, calcium nitrate and ethephon were sprayed in the last week of december and first week of january. The yield and quality parameters demonstrated a significant improvement. The fruits that were harvested from the trees treated with potassium sulphate @ 2.5% showed the greatest improvements in the yield parameters, including the number of fruits per tree, fruit length, fruit breadth, weight, and total yield per tree. Significantly improvement in quality parameters i.e. TSS, TSS/acid ratio, ascorbic acid and total sugar was observed in the fruits harvested from the trees treated with potassium sulphate @ 2.5 % which was statistically at par with potassium sulphate @ 2.0 %. while the minimum acidity was reported from the plants which were applied with potassium sulphate @ 2.5 % and potassium sulphate @ 2.0%. Pre-harvest application of different chemicals significantly influenced the quality parameters except specific gravity and stone weight. The nutrient content was also significantly affected with the application of various chemicals. The highest concentration of N and Ca content were found with the foliar spray of calcium nitrate @ 2.0 % while highest phosphorous and potassium content was found from the trees which were sprayed with ethephon @ 600 ppm and potassium sulphate @ 2.5% respectively. The application of potassium sulphate, calcium nitrate, and ethephon did not significantly affect the zinc content, but potassium sulphate @ 0.5% applied as a foliar spray resulted in the highest zinc content. The physiological loss in weight and spoilage percentage, which are indicators of shelf life, were also observed. Calcium nitrate @ 2.0%, caused the least physiological loss in weight, while ethephon, @ 600 ppm, caused the greatest physiological loss in weight and spoilage percentage in trees.