STUDIES ON THE EFFECT OF ZINC AS FOLIAR APPLICATION ON SEED YIELD AND QUALITY IN RADISH
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Date
2020-08
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UHF,NAUNI
Abstract
ABSTRACT
The present investigations entitled “Studies on the effect of zinc as foliar application
on seed yield and quality in radish” were carried out in the Department of Seed Science and
Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP)
during 2018-2019 using radish cv. Japanese White. There were twelve treatment
combinations including four levels of zinc (Zn) (0g l-1, 1g l-1, 2g l-1 and 3g l-1 ZnSO4) and
three stages of application (S) (Bolting, Bolting + 14 days after first application and Bolting +
14 days + 28 days after first application). Each plot of size 3.0 × 1.8 m accommodated thirty
plants at as spacing of 60 × 30 cm. The results revealed that among the 12 treatment
combinations, Zn3S1 (2g l-1 at the time of bolting) was the best treatment combination for
growth and seed yield parameters resulting in maximum plant height (118.92 cm), siliquae
plant-1(146.40), seeds siliqua-1(6.34), siliqua length (7.09 cm), average seed weight siliqua-1
(0.185g), minimum days to seed maturity (104.67) and maximum seed yield (27.03 g plant-1,
0.67 kg plot-1 and 9.90 q ha-1). The effect on various seed quality parameters evaluated under
laboratory conditions depicted superiority of interaction Zn3S1 in terms of maximum 1000
seed weight (14.36 g), germination of harvested seed (85.75%), seedling length (24.20 cm),
seedling dry weight (11.31 mg), seed vigour index-I (2,075.08), seed vigour index-II
(966.77), minimum electrical conductivity (0.017dS m-1), maximum germination in
accelerated ageing test (81.00 %) and cold test (78.25 %) than rest of the treatment
combinations. Maximum benefit: cost ratio (2.70:1) was also noticed in Zn3S1. Thus, it can be
concluded that for getting higher yield of quality seed in radish under mid hill condition of
HP, the crop should be sprayed with ZnSO4 @ 2g l-1 at bolting stage.