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PERFORMANCE OF RICE (Oryza sativa L.) CULTIVARS AND HYBRIDS UNDER DIFFERENT NUTRIENT MANAGEMENT PRACTICES IN SRI

KrishiKosh

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Title PERFORMANCE OF RICE (Oryza sativa L.) CULTIVARS AND HYBRIDS UNDER DIFFERENT NUTRIENT MANAGEMENT PRACTICES IN SRI
 
Creator SRI RANJITHA, P
 
Contributor SRINIVASA RAJU, M
 
Subject rice, developmental stages, grain, yields, fertilizers, vermicomposting, organic compounds, nutrients, hybrids, productivity
 
Description A field experiment was conducted on Silty clay soil at Directorate of Rice Research
farm, Rajendranagar, Hyderabad under the Southern Telangana agro-climatic zone of
Andhra Pradesh to study the “Performance of Rice (Oryza sativa L.) cultivars and hybrids
under different nutrient management practices in SRI”. The study was conducted during
kharif, 2010 and the experiment was laid in split plot design replicated thrice to assess the
performance of three varieties (Vasumathi, Krishnahamsa and KRH-2) in main plots and
with six nutrient management practices [100% RDN through inorganic fertilizer; 75%
RDN (inorganic) + 25% RDN (organic) through FYM/ vermicompost; 50% RDN
(inorganic) + 50% RDN (organic) through FYM/ vermicompost; 25% RDN (inorganic) +
75% RDN (organic) through FYM/ vermicompost; 100% RDN (organic) through FYM/
vermicompost; Control (No manure and no fertilizer)] in sub- plots under System of Rice
Intensification (SRI).
The hybrid KRH-2 performed better in terms of growth and yield components
resulting in significantly higher grain yield (6157.5 kg ha-1) over Krishnahamsa (4947.8
kg ha-1) and Vasumathi (3198 kg ha-1) respectively. Nutrient uptake was also significantly
greater with KRH-2 than Krishnahamsa and Vasumathi.
Among the different nutrient management practices, integrated treatment of 50 %
RDN (through urea) + 50 % RDN (organic) through vermicompost recorded significantly
higher grain yield (5520.8 kg ha-1) and straw yield (6265 kg ha-1) as well as nutrient
uptake (N: 85.8 kg ha-1, 72.1 kg ha-1, P: 18.8 kg ha-1, 12.0 kg ha-1 and K: 61.3 kg ha-1,
104.7 kg ha-1) by grain and straw, respectively over rest of the treatments and was
followed by 100 % RDN (inorganic) and 75 % RDN (through urea) + 25 % RDN
(organic) through vermicompost.
The interaction effect between varieties and integrated nutrient management
practices was significant as far as the grain yield and yield components are concerned.
When all the three varieties are imposed with different nutrient management practices,
KRH-2 responded well to 50 % RDN (through urea) + 50 % RDN (organic) through
vermicompost by recording highest grain yield (7084 kg ha-1) compared to Krishnahamsa
and Vasumathi. The next best grain yield was recorded under 100 % RDN (inorganic)
indicating good response to inorganic fertilizers also. KRH-2 gave the highest grain and
straw yield over Vasumathi and Krishnahamsa. The maximum B: C ratio (2.07) was
found associated with the hybrid KRH-2 in combination with 100% RDN (through urea)
 
Date 2016-06-24T11:39:27Z
2016-06-24T11:39:27Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67909
 
Language en
 
Relation D8809;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY