INFLUENCE OF SOWING TIME, SPACING AND FUNGICIDAL SPRAY ON SEED YIELD AND QUALITY IN NIGER {Guizotia abyssinica L.)
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Date
2007-01-03
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University of Agricultural Sciences GKVK, Banglore
Abstract
. A fiejd experiment was conducted at Main Agricul-tural- Research
Station, College of Agriculture, Dharwad during kharif 2004 to study the
effect of time of sowing, spacing and fungicidal spray on crop growth,
seed yield and quality of niger CV. N-71. The experimental results
revealed that plant height, number of primaiy and secondary branches
were higher in first sowing (July 1®*^) as compared to later sowings (July
15 and July 30). Sowing at wider spacing (45 x 10 cm) produced
maximum number of branches, while closer spacing (30 x 10 cm)
encouraged the higher plant height and fungicidal spray did not influence
these traits. Leaf area index was more in first sowing but decreased with
wider spUcing and was non-significantly influenced by fungicidal spray.
The interaction (T x S x F) was noii-significant with respect to above
parameters. Days to 50 per cent flowering and diy matter production at
both flowering and harvesting was higher in first sowing and also with
wider spacing. Fungicidal spray and interactions of T x S x F did not
influence above parameters. Second sowing with wider spacing and saaf
fungicide spray increased the number of effective capitula per plant, filled
seeds per capitula, 1000-seed weight, seed yield per plant and hectare
basis, compared to earlier and later sowing, closer spacing and other
fungicidal spray. While, the interaction effect (T x 8 x F) was found non
significant with respect to above parameters. Seed quality parameters
like germination percentage, root length, shoot length, field emergence
and vigour index were maximum with saff fungicide spray over others.
Sowing time, spacing and their interactions did not show significant
effect on seed quality. July 15«^ sowing at 45 x 10 cm spacing along with
saaf (Fa) or quintal (Fa) fungicidal spray recorded lower disease incidence
(62.00%) and seed infection (23.33%) compared to other treatments.
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