Author(s):

Tsomu T and Patel HC

Abstract: The present experiment was carried out at Horticultural Research Farm, Department of Horticulture, B.A. College of Agriculture, Anand Agricultural University, Anand during spring- summer season for two years on a mango cultivar Mallika to assess the effect of growth regulators (NAA and GA₃) and micronutrients (ZnSO₄ and borax) on and yield parameters and quality of mango. The experiment comprised of 15 treatments with different PGR’s and micronutrients i.e., NAA (T₁ = 20 mg/l, T₂ = 40 mg/l), GA₃ (T₄ = 25 mg/l, T₅ = 50 mg/l) and zinc sulphate (T₅ = 0.5%) and borax (T₆ = 0.2 %) and combined treatments i.e. NAA 20 mg/l + ZnSO₄ 0.5 % (T₇₎, NAA 20 mg/l + Borax 0.2 % (T₈₎, NAA 40 mg/l + ZnSO₄ 0. 5 % (T₉₎, NAA 40 mg/l + Borax 0.2% (T₁₀), GA₃ 25 mg/l + ZnSO₄ 0.5 % (T₁₁₎, GA₃ 25 mg/l + Borax 0.2 % (T₁₂₎, GA₃ 50 mg/l + ZnSO₄ 0.5% (T₁₃), GA₃ 50 mg/l + Borax 0.2% (T₁₄)along with water spray/control (T₁₅)were applied as foliar spray at full bloom, pea and marble stage of fruit growth. Combined effect of NAA 20 mg/l + Borax 0.2% significantly increased the number of fruits per plant (213.33), fruit yield (79.97 kg/tree) and various biochemical properties such as titratable acidity (%), TSS (%), reducing sugar (%), non reducing sugar (%), total sugar and ascorbic acid (mg/100g).

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