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Subject: Fruit Science × Author: Sweety × End date: 2021 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Standardization of nitrogen and potassium for strawberry cv. Winter Dawn under greenhouse
    (CCSHAU, Hisar, 2020-10) Sweety; Godara, A.K
    A field experiment entitled “Standardization of nitrogen and potassium for strawberry cv. Winter Dawn under greenhouse" was conducted during the year 2018-19 and 2019-20 at hi-tech greenhouse of the Department of Horticulture, CCS Haryana Agricultural University, Hisar. The investigation composed of two experiments viz., (i) studies on the effect of different levels of nitrogen application in combination with phosphorous and potassium on growth, yield and quality of strawberry through fertigation and (ii) studies on the effect of different levels of potassium application in combination with nitrogen & phosphorous on growth, yield and quality of strawberry through fertigation. The data were recorded on plant height, number of leaves per plant, plant spread, crown diameter, emergence of first flower, fresh weight of plant, dry weight of plant, NPK status of plants and soil, number of fruits per plant, fresh weight of fruit, length and breadth of fruits, yield per plant, total soluble solids, titratable acidity, TSS/ acid ratio, ascorbic acid content and anthocyanin content. The recorded data were subjected to statistical analysis using Randomized Block Design. The strawberry plants were fertigated with nitrogen, potassium and phosphorous. N, P and K fertigation had significant effect on growth, yield and quality of strawberry. The results indicate that strawberry plants fertigated with 250 g N + 200 g P2O5 + 400 g K2O from 10 Oct to 20 Nov, 600 g N + 200 g P2O5 + 600 g K2O from 21 Nov to 20 Dec, 250 g N + 200 g P2O5 + 600 g K2O from 21 Dec to 20 Jan, 700 g N + 200 g P2O5 + 900 g K2O from 21 Jan to 28 Feb and 600 g N + 200 g P2O5 + 900 g K2O from 1 to 31 March significantly increased plant height, number of leaves, crown diameter, plant spread, NPK status of plants, NPK status of soil. Early emergence of first flower was observed with 600 g N + 200 g P2O5 + 600 g K2O, whereas, maximum number of fruits, fruit weight, yield, total soluble solids, ascorbic acids and anthocyanin content of strawberry with 250 g N + 200 g P2O5 + 600 g K2O from 21 Dec to 20 Jan, 700 g N + 200 g P2O5 + 900 g K2O from 21 Jan to 28 Feb and 600 g N + 200 g P2O5 + 900 g K2O from 1 to 31 March than the control.