EFFECT OF PLANT DENSITY ON GROWTH AND YIELD OF SESAME CULTIVARS DURING SUMMER
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Date
2007-10-01
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University of Agricultural Sciences GKVK, Banglore
Abstract
Field experiment was condueted to study the effect of plant density
on growth and yield of sesame cultivars during summer at Main
Agricultural Research Station, Dharwad in black clayey soil during
summer season of 2004-05.
In the experiment, two sesame cultivars E-8 and DS-1 were grown
at five plant densities of 2,96,296, 3,33,333, 4,44,444, 5,55,555 and
6,66,666 plants ha h
Sesame cultivar DS-1 produced higher seed jdeld (1760 kg ha O
than cv. E-8 (1494 kg ha ')- The yield components, harvest index,
threshing percentage and DME were greater in cv. DS-1 than in cv. E-8.
Total dry matter (TDM) production plant"^ at harvest was 12.46 per cent
higher in cv. DS-1 than in cv. E-8. Dry matter production and its
proportional distribution in reproductive parts were greater in cv. DS-1
than in cv. E-8. Cultivar DS-1 recorded higher N, P and K uptake and oil
content than cv. E-8. Seed yield increased from 1564 to 1743 kg ha-i with
increase in plant density from 2,96,296 to 6,66,666 plants ha-h
Performance of individual plants with respect to growth,
morphological, yield and yield components was better at lower plant
density. Total dry matter plant^ was reduced by 15.65 per cent due to
increasing plant density from 2,96,296 to 6,66,666 plants ha-h Leaf area
planth number of branches plants and number of capsules plant •
decreased with increase in plant density from 2,96,296 to 6,66,666 plants
ha 1 whereas leaf area index, harvest index and uptake of plant nutrients
N, P and K increased with increase in plant density from 2,96,296 to
6,66,666 plants ha"L Higher seed yield (1743 kg ha"i) and net returns
(Rs. 39,735) were obtained at higher plant density of 6,66,666 plants ha L
Cultivar DS-1 and E-8 maximized their seed yield and net returns
(Rs. ha"U at higher plant density of 6,66,666 plants ha"L
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