Journal of Horticultural Sciences

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Effect of Plant Growth Regulators and Micronutrients on Reproductive Attributes of Acid Lime (Citrus aurantifolia Swingle) in Hasta bahar Cropping Season


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

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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  • Effect of Plant Growth Regulators and Micronutrients on Reproductive Attributes of Acid Lime (Citrus aurantifolia Swingle) in Hasta bahar Cropping Season

Abstract Views: 238  |  PDF Views: 123

Authors

H. K. Deshmukh
Department of Horticulture, P.G.I. Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444104, Maharashtra, India
D. H. Paithankar
Department of Horticulture, P.G.I. Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444104, Maharashtra, India
P. K. Nimbolkar
Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560089, Karnataka, India
R. K. Dewangan
Department of Horticulture, P.G.I. Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola - 444104, Maharashtra, India
C. Awachare
Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560089, Karnataka, India

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.

References