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Studies on direct and residual effect of organic amendments and fertility levels on productivity and soil health of rice - wheat cropping system

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Title Studies on direct and residual effect of organic amendments and fertility levels on productivity and soil health of rice - wheat cropping system
 
Creator NAVAL KISHOR SEPAT
 
Contributor R.K. Rai
 
Subject ---
 
Description t-7984
ABSTRACT
A field experiment was conducted for two years (2004
-
05 and 2005
-
06) at New
Delhi during the
kharif
and
rabi
seasons on sa
ndy clay loam soil with 0.0526% total
nitrogen, 9.9 kg ha
-
1
of available P and 176.63 kg ha
-
1
of available K to assess the effect
of organic sources and levels of fertility in rice (
Oryza sativa
)
–
wheat (
Triticum aestivum
L. emend. Fiori & Paol.) cropping
system. The twenty eight treatments comprising
combination of sources and levels of fertility to rice
-
wheat were laid out in split plot
design. The variety of rice and wheat used was Pusa Sugandh
-
3 and HD
-
2687,
respectively.
Application of
Sesbenia
green
manure significantly enhanced growth, yield
attributes, yield and nutrient uptake over control. The higher growth, yield attributes,
yield and nutrient uptake of rice was also increased with the increasing fertility levels
from 0 to 150 per cent RDF.
The r
esidual effect of organic amendment did not affect the yield and nutrient
uptake of wheat; however,
Sesbenia
green manured plots produced higher growth and
yield attributes than remaining organic amendments. The application of direct and
residual fertility
level at 150 per cent RDF to wheat gave higher grain yield and nutrient
uptake in wheat.
Cumulative effect of
Sesbenia
green manure to rice recorded higher growth, yield,
yield attributes and nutrient uptake in rice than remaining organic amendments. The
cumulative fertility levels (in both
kharif
and
rabi
) and cumulative fertility (application
only in
kharif
season) at 150 per cent RDF gave higher yield and nutrient uptake than
remaining fertility levels.
The cumulative residual effect of
Sesbenia
green m
anure to wheat gave higher
growth, yield attributes, yield and nutrient uptake in wheat crop. The cumulative and
cumulative residual fertility levels at 150 per cent RDF produced higher growth, yield
attributes, yield and nutrient uptake in wheat crop.
Dur
ing both the years, application of
Sesbenia
green manure to rice
-
wheat
cropping system fetched very high net return and benefit: cost ratio than remaining
organic amendments. Similarly, direct and residual fertility level at 150 per cent RDF to
rice
-
wheat
gave higher net return and benefit: cost ratio than remaining fertility levels.
Also during both the years application of
Sesbenia
green manure to rice
-
wheat cropping
system affect positively nutrient availability and nutrient balance sheet after harvest o
f
rice
-
wheat crops in soil. The direct and residual fertility level at 150 per cent RDF to rice
-
wheat had positive effect on nutrient availability and nutrient balance sheet in soi
 
Date 2017-01-12T09:53:29Z
2017-01-12T09:53:29Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/95776
 
Format application/pdf