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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
 
Creator YAKADRI, M
 
Contributor MIR MUSTAFA HUSAIN
 
Subject RESPONSE, GROUNDNUT, POTASSIUM, VARYING, LEVELS, NITROGEN, PHOSPHORUS, RAINFED, CONDITIONS
 
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.
 
Date 2016-08-18T14:29:12Z
2016-08-18T14:29:12Z
1990
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72909
 
Language en
 
Relation D3414;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.