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EVALUATION OF SYSTEM OF RICE INTENSIFICATION (SRI) FOR ENHANCED SEED YIELD AND QUALITY

KrishiKosh

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Title EVALUATION OF SYSTEM OF RICE INTENSIFICATION (SRI) FOR ENHANCED SEED YIELD AND QUALITY
 
Creator KUMAR, GOLLE
 
Contributor SUBBA RAO, L. V
 
Subject RICE, INTENSIFICATION, ENHANCED, SEED, YIELD, QUALITY
 
Description An investigation entitled “Evaluation of System of Rice Intensification for
enhanced seed yield and quality” was carried out with fifteen rice varieties in both
field and laboratory. Field experiment was conducted at Directorate of Rice
Research farm, ICRISAT campus located at Patancheru, Hyderabad, while
laboratory studies were carried out at Directorate of Rice Research, Rajendranagar,
Hyderabad. The field experiment was laid out in split plot design, replicated thrice
with two main treatments consisting of two methods of cultivation i.e., System of
Rice Intensification (SRI) and Conventional Transplanting (CT) and sub
treatments consisting of fifteen rice varieties which include three short duration,
three medium duration, three long duration, three hybrids and three scented.
SRI method of cultivation significantly increased the growth parameters
such as the plant height (cm), number of tillers, dry matter accumulation (g m-2),
root length (cm) and root volume (cm3 plant-1) in all the fifteen varieties. Days to
50% flowering recorded an average 5 - 6 days earlier flowering in SRI method
compared to conventional transplanting method. Significant improvement was
observed in seed yield and yield attributes viz., number of effective tillers, panicle
length (cm), total number of seeds per panicle, number of filled seeds per panicle,
number of high density seeds per panicle, number of grains per primary and
secondary panicle, 1000 seed weight, seed yield, straw yield and harvest index
under SRI.
Except seed germination all other seed quality parameters viz., seedling
length (root length and shoot length, separately), seedling dry weight and vigour
index recorded significantly higher values in SRI method.
Grain quality parameters such as the grain length (7.77 mm), amylose
content (25.83%), alkali spreading value, Fe (2.06 ppm) and Zn (13.23 ppm)
content (polished rice) recorded significantly higher values in SRI method
compared to grain length (7.47 mm), amylose content (25.09%), alkali spreading
value, Fe (1.77 ppm) and Zn (12.07 ppm) content (polished rice) under
conventional transplanting (CT).
Out of five groups of rice varieties i.e., short duration, medium duration,
long duration, hybrids and scented varieties, hybrids performed well under SRI
method of cultivation than other varieties. The hybrids US 382, PA 6444 and
DRRH 3 consistently recorded the highest yields compared to other varieties.
Hybrids recorded significantly higher number of effective tillers, extensive root
growth, number of filled seeds, panicle length and 1000 grain weight resulting in
higher yields. Among different cultivars tested, hybrids performed well under SRI
over scented varieties.
Akshayadhan recorded significantly higher seed quality parameters such as
root length (cm), shoot length (cm), root/shoot ratio, seedling length (cm) and
vigour index II. Grain quality parameters such as grain length and L/B ratio
significantly higher in long duration and grain breadth significantly higher in
medium duration. Significantly higher values in alkali spreading value and Fe
content were recorded in Vardhan. Jaya also recorded significantly higher values in
amylose content whereas higher Zn content was reported in Kasturi. SRI method
proved to be one of the water saving method of cultivation in rice and less
expensive than since compared only with CT.
 
Date 2016-09-14T10:16:11Z
2016-09-14T10:16:11Z
2014
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76557
 
Language en
 
Relation D9714;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD