INFLUENCE OF ROW SPACING AND PHOSPHORUS LEVELS ON SEED PRODUCTION OF DHAINCHA (Sesbania aculeata)
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Date
2013
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ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY
Abstract
A field experiment entitled “Influence of row spacing and phosphorus levels on seed
production of Dhaincha (Sesbania aculeata)” was conducted at College Farm, College of
Agriculture, Rajendranagar, Hyderabad on sandy clay loam soils with slightly alkaline in
soil reaction, medium in organic carbon, low in available nitrogen and medium in available
phosphorous and potassium. The treatments comprised of three row spacings (30 cm, 45
cm and 60 cm.) and three phosphorus levels (0 kg, 25 kg and 50 kg ha-1). The experiment
was laid out in a Randomized Block Design with factorial concept and replicated thrice.
The results revealed that row spacings and phosphorus levels significantly influenced
the growth parameters, yield attributes and yield of Dhaincha crop.
Among the three different row spacings (30 cm, 45 cm and 60 cm) studied, Dhaincha
sown at closer row spacing of 30 cm recorded more drymatter production, yield (seed and
stalk) and NPK uptake. But wider row spacing of 60 cm produced more number of pods
plant-1, seeds pod-1 and test weight than other row spacings (45 cm and 30 cm). The
improved per plant yield attributes at 60 cm row spacing has not reflected in per hectare
seed and stalk yield of Dhaincha.
Among the three different phosphorus levels (0, 25 and 50 kg ha-1) studied,
Dhaincha with 50 kg ha-1 phosphorus application performed better in plant height,
drymatter production, number of branches plant-1, number of pods plant-1, seeds pod-1, test
weight, yield (seed and stalk), NPK content and uptake than the other phosphorus levels
(0 and 25 kg ha-1).
Higher gross returns, net returns and B:C ratio was obtained at 50 kg ha-1
phosphorus application than lower levels (0 and 25 kg ha-1). But B : C ratio obtained at 50
kg ha-1 phosphorus application was at par with 25 kg ha-1.
Among the treatment combinations, 30 cm row spacing with 50 kg ha-1 phosphorus
application (S1P3) produced the highest drymatter production, yield (seed and stalk), NPK
uptake, gross monetary returns, net monetary returns and benefit - cost ratio followed by
30 cm row spacing with 25 kg ha-1 phosphorus application (S1P2).
From the present investigation, it can be inferred that Dhaincha can be grown
successfully with a row spacing of 30 cm and 25 -50 kg ha-1 phosphorus application during
rabi season under Southern Telangana Agro-climatic conditions of Andhra Pradesh
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Keywords
spacing, sowing, planting, yields, crops, developmental stages, productivity, diseases, harvesting, biological development