STUDIES ON THE EFFECT OF POLYMER COATING AND MICRONUTRIENTS APPLICATION IN RADISH SEED PRODUCTION
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Date
2024-05-24
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UHF Nauni
Abstract
The present investigation entitled, “Studies on the effect of polymer coating and micronutrients
application in radish seed production” were carried out at Laboratory and Experimental Farm of the Department of
Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during
2021-22 and 2022-23. The first experiment was laid out in Completely Randomized Design (CRD) in Laboratory and
in Randomized Complete Block Design (RCBD) in the field with 9 treatments (viz. control, polymer seed coating @
10 ml/kg seed, polymer seed coating @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @ 300 mg/kg seed, polymer seed
coating @ 10 ml/kg seed + Copper sulphate (CuSO4) @ 300 mg/kg seed, polymer seed coating @ 10 ml/kg seed +
Boric acid @ 300 mg/kg seed , polymer seed coating @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @ 300 mg/kg seed +
Copper sulphate (CuSO4) @ 300 mg/kg seed, polymer seed coating @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @ 300
mg/kg seed + Boric acid @ 300 mg/kg seed, polymer seed coating @ 10 ml/kg seed + Copper sulphate (CuSO4) @
300 mg/kg seed + Boric acid @ 300 mg/kg seed, polymer seed coating @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @
300 mg/kg seed + Copper sulphate (CuSO4) @ 300 mg/kg seed + Boric acid @ 300 mg/kg seed). Experimental results
revealed that treatment- polymer seed coating @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @ 300 mg/kg seed + Copper
sulphate (CuSO4) @ 300 mg/kg seed + Boric acid @ 300 mg/kg seed was found superior over all other treatments in
terms of germination percentage (90.44 %), seedling length (23.04 cm), seedling dry weight (12.49 mg), seedling
vigour index-I and II (2083.85 and 1129.21). This treatment was also found superior over all treatments in terms of
field emergence (85.79 %), days to harvest (49.23), number of leaves per plant (13.86), root length (22.68 cm), root
diameter (32.77 mm), net root weight (155.24 g) and root yield per plot (8.93 kg) and per hectare (226.70 q). The
second experiment was laid out in RCBD (factorial) for field studies and CRD (factorial) for laboratory studies. To
carry out the second experiment, radish stecklings (treatment wise) were transplanted under field conditions in 135
plots of size 2.4×1.2 m accommodated sixteen plants at as spacing of 60 × 30 cm. At bolting and 50% flowering
radish plants were sprayed with water, ZnSO4 (0.5%), CuSO4 (0.5%), Boric acid (0.3%) and no spray. Data on various
growth, flowering, seed yield and quality contributing characters were recorded. From the present investigation, it was
concluded that the treatment combination, seed coating with polymer @ 10 ml/kg seed + Zinc sulphate (ZnSO4) @
300 mg/kg seed + Copper sulphate (CuSO4) @ 300 mg/kg seed + Boric acid @ 300 mg/kg seed and foliar application
of boric acid @ 0.3% sprayed at bolting and 50% flowering had exhibited highest values for number of pods per plant
(311.13), number of seeds per pod (6.86), seed yield (29.72 g/plant, 475.44 g/plot and 1321.73 kg/ha), 1000 seed
weight (17.83 g), germination percentage of freshly harvested seeds (92.83 %), seedling length (23.23 cm), seedling
dry weight (12.87 mg), speed of germination (13.51), SVI-I and SVI-II (2156.55 and 1194.32) and maximum benefit:
cost ratio (3.85:1) was also noticed. However, maximum plant height (118.45 cm), number of primary branches per
plant (15.05) and pod length (6.84 cm) was reported in the plants raised from seed coated with polymer @ 10 ml/kg
seed + Zinc sulphate (ZnSO4) @ 300 mg/kg seed + Copper sulphate (CuSO4) @ 300 mg/kg seed + Boric acid @ 300
mg/kg seed and foliar application of ZnSO4 @ 0.5% sprayed at bolting and 50% flowering. Accordingly, it may be
inferred from the outcomes of the investigation that seed coating with polymer @ 10 ml/kg seed + Zinc sulphate
(ZnSO4) @ 300 mg/kg seed + Copper sulphate (CuSO4) @ 300 mg/kg seed + Boric acid @ 300 mg/kg seed along
with foliar application of boric acid @ 0.3% is an appropriate treatment combination for promoting the growth,
flowering as well as seed production in radish.