Journal of Horticultural Sciences

H. K. Deshmukh ¹, D. H. Paithankar ¹, P. K. Nimbolkar ², R. K. Dewangan ¹, C. Awachare ²

Affiliations
1 Department of Horticulture, P.G.I. Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444104, Maharashtra, IN
2 Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560089, Karnataka, IN

Abstract

Plant growth regulators and micronutrients at various combinations [GA₃ 50ppm + Cycocel 1000ppm + KNO₃ 0.2% + Zn 0.3% + Boron 0.1%; GA₃ 50ppm + Cycocel 2000ppm + KNO₃ 0.2% + Zn 0.3% + Boron 0.1%; GA₃ 50ppm + Paclobutrazol 2.5g a.i./tree (soil application) + KNO₃ 0.2% + Zn 0.3% Boron 0.1%; GA₃ 50ppm + Paclobutrazol 3.5g a.i./tree (soil application) + KNO₃ 0.2% + Zn 0.3% + Boron 0.1%; GA₃ 50ppm + Paclobutrazol 1000ppm (foliar application) + KNO₃ 0.2% + Zn 0.3% + Boron 0.1%; and, GA₃ 50ppm + Paclobutrazol 2000ppm + KNO₃ 0.2% + Zn 0.3% + Boron 0.1%] were sprayed before flower emergence in acid lime. Minimum days taken to emergence of flower bud (39.57), duration of flowering (24.07), days to 50% fruit set (6.54) and days taken to fruit maturity (145.90) were observed with application of GA₃ 50ppm + Paclobutrazol 3.5g a.i./tree (soil application) + KNO₃ 0.2% + Zn 0.3% + Boron 0.1% (T₅), whereas, fruit drop (5.92%) was minimum with GA₃ 50ppm + Cycocel 2000ppm + KNO₃ 0.2% + Zn 0.3% + Boron 0.1% (T₃). Treatment T₃ also increased the number of flowers per meter length of shoot (49.65) as well as fruit yield (8.90).

Keywords

Acid Lime, Growth Regulators, Nutrients, Flower Set, Fruit Set.

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