EFFECT OF GA3 APPLICATION ON FRUIT, SEED YIELD AND SEED QUALITY PARAMETERS IN OKRA
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Date
2019-09
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UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled “Effect of GA3 application on fruit, seed yield and seed quality
parameters in okra” was conducted during Kharif season of 2018-19 at Khaltoo farm and laboratory conditions of
department of Seed Science and Technology, Dr Yashwant Singh Parmar University of Horticulture and Forestry,
Nauni, Solan. The experiment was laid out in Randomized Complete Block Design (factorial) and Completely
Randomized Design (factorial) with one additional treatment having three replications each. The observations were
recorded on days taken to 50% flowering, days taken to fruit maturity, number of fruits per plant, fruit length, fruit
yield (g per plant, kg per plot and q per ha), number of seeds per pod, 100 seed weight, seed yield (g per plant, kg
per plot and q per ha), per cent seed germination, speed of germination, seedling length (cm), seedling dry weight
(mg), seed vigour index-I and seed vigour index-II. Analysis of variance showed significant differences among all
the treatments for all the characters under study. Individually, concentration 150 ppm of GA3 was recorded
significantly better for fruit, seed yield and seed quality parameters. Irrespective of concentration, spray at 45 days
after germination resulted in maximum fruit yield whereas, for seed yield and seed quality parameters spray at 60
days after germination was observed significantly better. For maximum fruit yield and component traits of okra,
combination of the foliar application of GA3 150 ppm at 45 days after germination whereas, for increased seed yield
and component traits, the treatment combination of GA3 150 ppm at 60 days after germination of seed can be
adopted for commercial cultivation after validation in different regions. Spray of 150 ppm GA3 at 60 days after
germination of seed also recorded highest net returns (Rs. 336394.8) in okra seed production which accounts for
highest B:C ratio (2.40). Therefore, on the basis of present study, it is concluded that treatment combination GA3
150 ppm at 60 days after germination of seed enhanced the seed yield and its quality parameters in mid hills of
Himachal Pradesh.
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