Impact of Fertilizer and Micronutrients Levels on Growth, Yield and Quality of Grape cv. Sahebi

Abstract

A study was carried out in model grapevine orchard of department of Horticulture at Kralbagh, Tehsil Lar, district Ganderbal (J&K) for two consecutive years. The treatment consisted of 3 levels of fertilizer doses, F1(FYM50 kg/vine + recommended dose of NPK: 555, 227, 470 g/vine), F2(FYM 50 kg/vine+ 2 times recommended dose of NPK: 1110, 454, 940 g/vine), F3(FYM 50 kg/vine+ 3 times recommended dose of NPK: 1665, 681, 1410 g/vine), 3 micronutrients viz. M1(Solubor 0.1%), M2(ZnSO4 0.4%) and M3(Solubor 0.1% + ZnSO4 0.4%) applied two weeks before bloom and their combinations replicated thrice with a double plot size in a completely randomized block design. Fertilizer level F2  recorded maximum percentage of fruitful shoots per, number of bunches per vine, fruit yield, berry TSS, berry total sugars, berry anthocyanin contents and lowest berry titrable acidity and shot berries during both the years. Among micronutrients, M1resulted in highest percentage of fruitful shoots per vine, number of bunches per vine, fruit yield, bunch weight, bunch diameter, berry weight, berry length, berry diameter, berry juice, berry TSS, berry total sugars, berry anthocyanin content and lowest berry titrable acidity and shot berries during both the years of study. Combination of fertilizer level F2 and micronutrient M1 resulted in highest percentage of fruitful shoots per vine, number of bunches per vine, fruit yield, berry TSS, berry total sugars, berry anthocyanin content and lowest berry titrable acidity and shot berries during both the years under study. Thus  it could be concluded that fertilizer dose F2(FYM-50 kg/vine + 2 times recommended dose-NPK: 1110, 454, 940 g/vine), micronutrient M1(Solubor 0.1%) and their combination was most effective for improving growth, yield, quality and lowering shot berry incidence of grape cv. Sahebi.