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Effect of plant growth regulators on growth and yield of HDPS cotton
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NSTL
Field experiment was conducted at Agricultural College Farm, Bapatla during kharif, 2020. The experiment consisted of ten treatments, laidout in randomized block design with three replications. The treatments comprised ofT; control, T2: Mepiquat chloride 50 ppm at 45 DAS; T3: Mepiquat chloride 50 ppm at 75 DAS; T4: Maleic hydrazide 30ppm at 45 DAS; T5: Maleic hydrazide 30ppm at 75 DAS; T6: Cycocel 60ppm at 45 DAS; T7: Cycocel 60ppm at 75 DAS; T8: Mepiquat chloride 50 ppm at 45 DAS and 75DAS; T9: Maleic hydrazide 30ppm at 45 DAS and 75 DAS; T10: Cycocel 60ppm at 45 DAS and 75 DAS. The results of the trial revealed that among various plant growth regulators, application of Mepiquat chloride 50 ppm at 45 DAS and 75 DAS recorded higher drymatter accumulation and SPAD readings. The maximum sympodia/plant, bolls/plant, picked bolls/plant, boll weight and seed cotton yield were noticed in the treatment Mepiquat chloride 50 ppm at 45+ 75 DAS which was at par withT9: Maleic hydrazide 30 ppm at 45 DAS and 75DAS; andT10: Cycocel 60 ppm at 45 and 75 DAS.
Cottongrowth regulatorsseed cotton yield
K. PRIYANKA、M. SREE REKHA、K. LAKSHMAN
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Department of Agronomy, Agricultural College, Bapatla-522101
NSTL
