INFLUENCE OF CHEMICALS AND PLANT GROWTH REGULATORS ON PLANT GROWTH AND YIELD OF AFRICAN MARIGOLD DURING SUMMER
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Authors
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D. APARNA*, M. L. N. REDDY, A. V. D. DORAJEE RAO, V. V. BHASKAR, P. SUBBARAMAMMA and K. UMA KRISHNA
College of Horticulture, Dr Y.S.R. Horticultural University, West Godavari - 534 101
Keywords:
Calcium nitrate; Gibberllic acid; Homobrassinolide; Marigold; Potassium nitrate; Salicylic acidAbstract
The two-year research was conducted during 2017 and 2018 to study the influence of certain
chemicals like calcium nitrate, potassium nitrate and plant growth regulators viz., GA3, salicylic acid
and homobrassinolide against heat stress tolerance during summer on plant growth and flower yield
of African marigold cv. Bidhan Marigold-2. Salicylic acid spray @ 200 ppm once at 30 days after
transplanting (DAT) recorded maximum values in terms of flower diameter (4.35 cm), ten flower weight
(44.57 g), flower yield (158.39 q ha-1) which was followed by 2% potassium nitrate spray with flower
yield of 141.52 q ha-1 whereas untreated plots (control) recorded the lowest values in all the growth
and yield paramters
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