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EFFECT OF FYM & ROTARY WEEDING ON CROP YIELD IN THE SYSTEM OF RICE INTENSIFICATION (SRI)

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Title EFFECT OF FYM & ROTARY WEEDING ON CROP YIELD IN THE SYSTEM OF RICE INTENSIFICATION (SRI)
 
Creator BHARATHY, V.E
 
Contributor BUCHA REDDY, B
 
Subject EFFECT, FYM, ROTARY, WEEDING, CROP, YIELD, SYSTEM, RICE, INTENSIFICATION
 
Description A field experiment was conducted on sandy clay loam soils of Rajendranagar
campus of Acharya N.G. Ranga Agricultural University during kharif, 2004 to study
the “Effect of FYM & rotary weeding on crop yield in the system of rice
intensification (SRI)”. The trial was laid in split plot design, replicated thrice with
three nutrient management practices (FYM 10 t/ha; FYM 10 t/ha + 100% RDF;
100% RDF) in main plots and four weed management practices (Rotary weeding
twice; Rotary weeding thrice; Rotary weeding four times; Rotary weeding thrice +
hand weeding) in sub-plots.
Growth parameters viz., plant height, total tillers and total drymatter, yield
attributes viz., effective tillers, number of grains per panicle and spikelet sterility
were significantly influenced by different nutrient and weed management practices.
Combined application of organic and inorganic nutrient sources recorded maximum
growth and yield attributing characters followed by application of 100% RDF alone.
Among weed management practices, rotary weeding thrice + hand weeding and
rotary weeding four times recorded significantly higher growth and yield parameters
over rest of the treatments.
Grain yield differed significantly among different nutrient and weed
management practices. Significantly higher grain yield was recorded with combined
application of organic and inorganic nutrient sources. Among weed management
practices, rotary weeding thrice + hand weeding recorded maximum grain yield
followed by rotary weeding four times.
Nutrient (NP and K) removal by rice differed significantly among different
nutrient and weed management practices. Maximum nutrient uptake was observed
with combined application of organic and inorganic nutrient sources and rotary
weeding thrice + hand weeding among nutrient and weed management practices,
respectively. Post-harvest nutrient status of soil did not differ among nutrient and
weed management practices. However, relatively higher values of available N, P and
K were observed with combined application of organic and inorganic nutrient
sources in nutrient management and rotary weeding thrice + hand weeding in weed
management practices.
Weed density, weed drymatter and nutrient uptake by weeds did not differ
significantly among different nutrient and weed management practices in the earlier
stages but differed at the later stages of crop growth. Application of FYM 10 t/ha
recorded the lowest weed population, weed drymatter and nutrient removal. Among
weed management practices, rotary weeding thrice + hand weeding recorded the
lowest weed density, weed drymatter and nutrient removal followed by rotary
weeding four times.
Gross returns was highest with FYM 10 t/ha + 100% RDF, however, net
returns and benefit cost ratio was maximum with FYM 10 t/ha + 100% RDF. Rotary
weeding thrice + hand weeding recorded maximum gross returns, while, net returns
and benefit cost ratio was maximum with rotary weeding four times owing to lesser
cost of cultivation.
 
Date 2016-08-20T14:48:21Z
2016-08-20T14:48:21Z
2005
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73202
 
Language en
 
Relation D7500;
 
Format application/pdf
 
Publisher ACHARYA N.G.RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD