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Physiological and biochemical basis of growth, yield and drought tolerance in groundnut by application of potash

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Title Physiological and biochemical basis of growth, yield and drought tolerance in groundnut by application of potash
Physiological and biochemical basis of growth, yield and drought tolerance in groundnut by application of potash
 
Creator Prusty, N
 
Contributor Mishra, B.K
 
Subject -drought tolerance in groundnut, potash, TDM
 
Description A field experiment entitled “Physiological and biochemical basis of growth, yield and
rought tolerance in groundnut by application of potash” was conducted at central farm OUAT,
hubaneswar under AICRP on groundnut, Department of Agronomy during Rabi-summer 20142015.
The
physiological
studies
were
carried
out
in
the
Department
of
Plant
physiology,
College

f

Agriculture, Bhubaneswar. Groundnut variety Devi was taken for study and the experiment
was laid out in a Randomized Block Design with 8 treatments and replicated thrice. The
eatments were comprised off T1 : control (no NPK) T2 : farmers practice (N:P:K:: 18:46:30
kg/ha) T3: RD of NPK @ 20:40:40 kg/ha T4 : NPK @ 20:40:60 kg/ha T5 : NPK @ 20:40:80
kg/ha all at sowing T6 : NPK @ 20:40:20 kg/ha at sowing and 20 kg/ha at flowering(30DAS) T7 :
NPK @ 20:40:30 kg/ha at sowing and 30 kg/ha at flowering (30 DAS) T8 : NPK @ 20:40:40
kg/ha at sowing and 40 kg/ha at flowering (30 DAS).
The result revealed that plant height, number of branches, number of leaves, number of
nodules, TDM were improved by the level and timing of K application. Among the treatments
pplication of 60 and 80 kg K/ha in split registered significant increase of the above growth
haracter in groundnut crop which reflected a higher value of LAI, LAD, CGR and RGR. The
physiological traits like chlorophyll index, CSI, MSI, WP, MC, RWC and RWD which are
onsidered as putative traits for stress tolerance of a crop significantly influenced by the level of
K and timing of its application. A significant increase of these traits was noticed when the level
f K was increased up to 80 kg/ha and applied to groundnut crop in splits except RWD which
decreased significantly with increase in the level of K. The biochemical traits like NRA and
proline content of leaf, uptake of N, P and K by groundnut plant and plant parts and oil content in
seed increased significantly with increase in the level of K application. The highest value of these
biochemical characteristics of groundnut crop were recorded at 80 kg K/ha when applied in splits
t sowing and flowering. The seed yield in groundnut increased significantly with increase in the
evel of K application due to increase in number of pods per plant, shelling percentage and kernel
weight and the highest yield registered among the treatments at 80 kg K/ha when applied in split.
n view of the positive and beneficial effect of K application in groundnut crop it may be
oncluded that improvement in the productivity of groundnut crop under residual soil moisture
ondition can be possible through split application of K up to 80kg/ha.
 
Date 2017-01-04T12:38:49Z
2017-01-04T12:38:49Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/94401
 
Language en
 
Relation Th;4444
 
Format application/pdf