EFFECT OF PLANT GEOMETRY ON GROWTH AND YIELD OF PIGEONPEA GENOTYPES IN VERTISOLS OF NORTHERN TRANSITIONAL ZONE OF KARNATAKA
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Date
2001-08-02
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
A field experiment was conducted during Kharif, 1999 at Main
Research Station, Dharwad with two pigeonpea genotypes and seven
planting geometries (population).
The genotypes, Maruti (1469 kg/ha) and PET-3-19 (1445 kg/ha)
recorded on par grain yield, yield attributes viz., number of pods per
plant, number of seeds per pod, pod weight per plant, seed yield per
plant, 100-seed weight, harvest index and seed protein content. While,
few growth characters viz., total number of branches, dry matter
accumulation in leaves, total dry matter production, plant spread per
plant and light transmission ratio were found significant only at certain
stages of growth. But, there was significant difference in plant height,
days to flower initiation, 50 per cent flowering and physiological
maturity, the highest being with PET-3-19.
The geometry had significant effect on all the growth and yield
attributes. A geometry of 120 cm X 30 cm with a population of 27,777
plants per ha recorded the highest yield (1544 kg/ha) and yield
attributes viz., number of pods per plant (155.7), number of seeds per
pod (3.2), pod weight per plant (99.033 g), seed yield per plant (53.90 g),
100-seed weight (9.130 g) and harvest index (27.62 %). It also recorded
the highest per plant number of primary, secondary and total branches,
dry matter accumulation in leaves, stem and reproductive parts, plant
spread and LTR. But, the plant height, LAI, LAD and flower drop were
highest with a population of 83,333 plants per ha with the geometry of
120 cm X 10 cm and 60 cm X 20 cm.
Thus, it can be concluded that the genotype Maruti in a geometry
of 120 cm X 30 cm with a population of 27,777 plants per ha is optimum
to get higher yield and net return in vertisols of Northern Transitional
Zone of Karnataka.
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