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Effect of organic manures and biofertilizers in organic farming of rice (Oryza sativa L.)-wheat (Triticum aestivum L.) cropping system

KrishiKosh

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Title Effect of organic manures and biofertilizers in organic farming of rice (Oryza sativa L.)-wheat (Triticum aestivum L.) cropping system
 
Creator Moola Ram
 
Contributor S.N. Sharma
 
Subject developmental stages, marketing, planting, fruits, humus, diseases, plant habit, land improvement, environmental factors, biological phenomena
 
Description t-8162
The emerging scenario of sustainability threat to rice-wheat cropping system due to
depletion of soil organic carbon and mineral nutrients necessitates the need of adoption of the
practices which maintain the soil health, keep the production system more sustainable and
provide qualitative food for meeting the nutritional requirements of human beings. Organic
farming is one of the practices to make rice-wheat cropping system more sustainable without
adverse effects on the natural resources and the environment.
The present investigation entitled, “Effect of organic manures and biofertilizers in
organic farming of rice (Oryza sativa L.) - wheat (Triticum aestivum L.) cropping system”
was conducted during crop years of 2007-08 and 2008-09 at the research farm of Indian
Agricultural Research Institute, New Delhi to find out a suitable combination of organic
manures and biofertilizers for higher productivity, grain quality, net return and for resilient
soil fertility under rice-wheat cropping system. The soil of experimental field was a sandy
clay loam (typical Ustochrept, 51.46% sand, 23.02% silt and 25.52% clay) in texture,
medium in organic C, available phosphorus, available potassium and low in available
nitrogen and had a pH 8.
The experiment was laid out in a randomized block design with three replications
and sixteen treatments. Treatments consisted of three sets of five treatments (Farmyard
manure (FYM), Green manure (GM), GM + Biofertilizers (B), GM + FYM and GM + FYM
+ B) and a control. One set of the treatments applied to rice was regarded as direct effect for
rice and residual effect for succeeding wheat. Similarly, second set of the treatments applied
to wheat was regarded as direct effect for wheat and residual effect for succeeding rice and
third set of treatments applied to both rice and wheat was regarded as cumulative effect for
both rice and wheat. For green manures, Sesbania aculeata was used for rice and Leucaena
green leaf for wheat. For biofertilizers, blue green algae was used in rice and Azotobacter in
wheat.
Results revealed that GM was significantly superior to FYM for increasing the
productivity, grain quality, gross and net income, nutrient uptake and improving soil
physical, chemical and biological parameters under rice-wheat cropping system. Cumulative
effects of FYM and GM were more effective than their direct and residual effects. Further,
inoculation of B with GM was better than GM and FYM alone. The combination of GM +
FYM was still better than GM and FYM alone. The highest increase in productivity, grain
quality and nutrient uptake was recorded with the application of GM + FYM + B.
On the basis of results on productivity, economics and soil fertility, it is concluded
that GM + FYM + B was found to be a suitable combination of organic manures and
biofertilizers under organic farming of rice-wheat cropping system.
 
Date 2016-12-23T11:35:52Z
2016-12-23T11:35:52Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/92386
 
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