INVESTIGATIONS ON SEED PRODUCTION TECHNIQUES AND STORABILITY OF CHICKPEA (Cicer arietinumL.)
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Date
2001-08-03
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
Field experiments were conducted at Main Research Station,
Dharwad and laboratory experiments were conducted in the laboratory of
Department of Seed Science and Technology, University of Agricultural
Sciences, Dharwad during rabi 1997-98 and 1998-99 on seed production
techniques and storability of chickpea genotypes. Seed yield was
significantly higher with better morpho-physiological growth and quality
characteristics in A-1 (43.27 q ha-1), BG-256 (41.92 q ha-1) and lCCV-2
(41.98 q ha-1) genotypes sown during October 3rd week and in K-850
(38.45 q ha-1) sown during October 1st week with 37.5 N: 75 P2O5 kg ha-1
' fertilizer level. The decreased seed yield was noticed in A-1, K-850 and
ICCV-2 sown during November 1st week and in BG-256 sown during
October 1st week with 25 N : 50 P2O5 kg ha -1. Spraying of growth
regulators at flower initiation stage in A-1 and ICCV-2 genotypes resulted
in better morpho-physiological growth and higher seed yield besides
having better quality with 50 ppm TIBA (37.98 q ha -1), 100 ppm NAA
(36.40 q ha-1), 1000 ppm Lihocin (36.14 q ha -1), 75 ppm TIBA (34.57 q
ha-1), 150 ppm NAA (34.14 q ha ') and 1000 ppm Mepiquat chloride
(34.04 q h-1) compared to other growth regulators and control (no
growth regulator spray). Based on seed recovery (96 to 98%),
germination (90 to 93%), test weight and vigour index, a 6.0 mm (R)
sieve size was found optimum for seed processing of seven desi andkabuli chickpea genotypes studied. Application of endosullan @ 2 g or
carbaryi @ 4 g 1"' at pod milky and crop maturity stages as pre-liarvest
sprays and at seed storing stage @ 2 or 4 g kg ' of seeds as post-harvest
treatment was found beneficial in maintaining higher 100 seed weight,
germination and seedling vigour index with lower seed infestation,
moisture content and seed leachates compared to control during ten
months ambient storage period of chickpea A-1 seeds in cloth bags.
Endosulfan maintained higher seed storability compared to carbaryi
irrespective of stages of insecticidal applications. Among various seed
protectants, castor and neem oils @ 5 ml kg-1 and lakke leal powder @ 10
g kg-1 with or without captan @ 2.5 g kg-1 of seeds were found as the best
seed protectants for maintaining better seed quality with lower seed
infestation during ten months ambient storage period of chickpea A-1
seeds in cloth bags.
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