RESPONSE OF GROUNDNUT TO POTASSIUM WITH VARYING LEVELS OF NITROGEN AND PHOSPHORUS UNDER RAINFED CONDITIONS
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Title |
RESPONSE OF GROUNDNUT TO POTASSIUM WITH VARYING LEVELS OF NITROGEN AND PHOSPHORUS UNDER RAINFED CONDITIONS
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Creator |
YAKADRI, M
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Contributor |
MIR MUSTAFA HUSAIN
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Subject |
RESPONSE, GROUNDNUT, POTASSIUM, VARYING, LEVELS, NITROGEN, PHOSPHORUS, RAINFED, CONDITIONS
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Description |
A field experiment entitled RESPONSE OF GROUNDNUT (Arachis hypogaea L. ) TO POTASSIUM WITH VARYING LEVELS OF ยท NITROGEN AND PHOSPHORUS was conducted during kharif (July-October) 1989 under rainfed conditions at the Students' Farm, College of Agriculture, Rajendranagar,Hyderabad. The experimental site comprised of red sandy loam soil having low available nitrogen, medium available phosphorus and potassium, with a pH of 7.4. The experiment was laid out in split plot design replicated thrice. The treatments consisted ~t combination of two levels of nitrogen (0 and 30 kg ha ) and three levels of phosphorus (0, 30 and 60 kg P2o5 ) assigned to main plots and four levels of potassium (0, 30, 60, and 90 kg K2o) as sub plot treatments. Nitrogen in the form of urea was applied as per the treatments in two equal splits, at sowing and at 30 .DAS while the entire quantity of phosphorus and potassium was applied as basal in the form of single super phosphate and muriate of potash respectively. The results revealed that application of nitrogen, phosphorus, and potassium had greater influence on groundnut yield. Plant height and leaf area index increased rapidly during the period from 30 to 60 DAS. At 60 and 90 DAS dry matter production incre~ted significantly by application of nitrogen (30 kg ha ), phosphorus (60 kg P2o5 ), and potassium (60 kg K2o}. The interactions N30P60 and N30K60 recorded h1gher quantity of dry matter compared to tfiat with the other treatment combinations. Application of nitrogen at 30 kg -1 ~ 1ha , and phosphorus and potassium each at 60 kg ha recorded higher number of filled pods per plant, 100 kernel weight, and . pod as well as haulm yield compared to other treatments. Shelling percentage and protein content were significantly influenced by application of nitrogen only. Harvest index and oil content in seed were not significantly influenced by N, P, and K levels. Uptake of nitrogen, phosphorus, and potassium by groundnut was influenced sig~ificantly by the treatments. Nitrogen at_fO kg ha , phosphorus and potassium each at 60 kg ha recorded maximum uptake of N, P, and K at different stages of crop growth. In NxP! and NxK intera~tions, N30P60 an~ N30K60 recorded max1mum uptake of n1trogen ana po~ass1um compared to that with the other treatment combinations. Pods removed more nitrogen than the haulms, but haulms removed more phosphorus and potassium than pods. The optim~1 economic dose of potassium was 67.19 kg K2o ha Application of nitrogen, phosphorus and potassium markedly influnece~ 1net monetary returns with higher amount of Rs.4,158 hi obtained with N, P, and K at 30, 60 and 60 kg ha (N1P2K2 ) respectively and the net profit per rupee inveseea was Re.0.79 for this treatment. |
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Date |
2016-08-18T14:29:12Z
2016-08-18T14:29:12Z 1990 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/72909
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Language |
en
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Relation |
D3414;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.
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