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STUDIES ON INTEGRATED NUTRIENT MANAGEMENT UNDER SYSTEM OF RICE INTENSIFICATION

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Title STUDIES ON INTEGRATED NUTRIENT MANAGEMENT UNDER SYSTEM OF RICE INTENSIFICATION
 
Creator SOWMYA, CH
 
Contributor VENKATA RAMANA, M
 
Subject STUDIES, INTEGRATED, NUTRIENT, MANAGEMENT, UNDER, SYSTEM, RICE, INTENSIFICATION
 
Description An investigation entitled “Studies on integrated nutrient management under
System of Rice Intensification” was conducted during kharif 2006-0’7 at Directorate
of Rice Research Farm, Rajendranagar, Hyderabad. The experiment was conducted
on clayey vertisol of medium fertility with two methods of cultivation (SRI and
NTP), two cultivars (PSD-1 and BPT-5204) and six nutrient management options (5
t FYM ha-1, 10 t FYM ha-1, 50 % RDF, 100 % RDF, 5 t FYM ha-1 + 50 % RDF and
10 t FYM ha-1 + 50 % RDF) in split-split plot design with three replications.
Crop growth measured as plant height, tiller number m-2 and total dry matter
production at different stages, yield components viz., panicles m-2 and test weight as
well as straw yield were significantly higher under NTP method compared to SRI.
Nevertheless, SRI recorded an additional grain yield of 276 kg ha-1 over NTP
method due to more number of filled grains panicle-1 and better partitioning (HI).
Nutrient uptake (N, P & K) by crop did not differ between the methods of
cultivation at flowering and harvest stages.
The hybrid PSD-1 performed better in terms of growth and development of
the crop, yield components resulting in significantly higher grain yield (4835 kg ha-
1) over BPT-5204 (4453 kg ha-1). Nutrient uptake was also significantly greater with
PSD-1 over BPT-5204.
Among the different nutrient management options, integrated use of 10 t
FYM ha-1 along with 50 % RDF gave significantly higher grain (5595 kg ha-1) and
straw yield (6700 kg ha-1) as well as nutrient uptake (N: 78.93, 42.47; P: 18.94,
12.82; K: 21.83, 88.73 kg ha-1 by grain and straw respectively) over rest of the
treatments. This was followed by 5 t FYM ha-1 + 50 % RDF and 100 % RDF alone
treatments. The comparable grain yields with these treatments indicates that 50 %
RDF can be substituted with the application of 5 t FYM ha-1.
The two factor interaction revealed similar performance of cultivars under
SRI. However, the hybrid PSD-1 gave significantly higher grain yield compared to
that of BPT-5204 under NTP. Application of 10 t FYM ha-1 + 50 % RDF under both
the methods of cultivation as well as with both the cultivars resulted in higher grain
yield over other nutrient management options.
Among all the treatment combinations, the hybrid PSD-1 with 10 t FYM ha-1
+ 50 % RDF under SRI recorded higher grain yield (5979 kg ha-1) followed by the
cultivar BPT-5204 with the same nutrient option and method of cultivation (5769 kg
ha-1). In terms of economics, the cultivar BPT-5204 with integrated treatments (10
t/5 t FYM ha-1 + 50 % RDF) gave respectively higher gross (49,254; 46,500 Rs. ha-
1) and net returns (34,581; 33,627 Rs. ha-1) but the benefit-cost ratio (2.61) was
higher with 5 t FYM ha-1 + 50 % RDF treatment because of higher cost incurred on
FYM with 10 t FYM ha-1 + 50 % RDF treatment (B:C ratio of 2.35)
 
Date 2016-08-08T14:19:50Z
2016-08-08T14:19:50Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/71544
 
Language en
 
Relation D8175;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD