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Impact of farmers organic farming practices on soil properties in northern dry zone of karnataka

KrishiKosh

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Title Impact of farmers organic farming practices on soil properties in northern dry zone of karnataka
 
Creator Manjunatha Bhanuvally
 
Contributor S.K.Gali
 
Subject Soil Sciences and Agri Chemistry
 
Description A study was conducted in the Northern Dry Zone of Karnataka to know the effect of
farmers’ organic farming practices on soil properties and health in selected major cropping
systems viz., cotton, sugarcane, jowar and vineyard. Farmyard manure and vermicompost
were the sources of organics used by organic farmers in the study area. The quantity of
organics applied to soils varied from 8.0 to 20.0 tonnes of FYM per ha per year and 1.0 to 3.0
tonnes of vermicompost per ha per year. The nutrient (N, P and K) concentration was higher
in vermicomposts than in FYM. The C:N ratio of vermicomposts was also narrower (13:1 to
20:1) compared to its ratio in FYM (25:1 to 38:1).
The physical properties of soils were found to be influenced favourably by the organic
farming practice. A reduction in bulk density and an increase in water holding capacity and
water stable aggregates was noticed in all the soils under organic farming. A reduction in pH
was observed in soils under organic farming, however there was no appreciable change in the
EC of soils. Increase in organic carbon content of soils under organic farms varied widely
over conventional farms. The soils under organic farms also recorded higher CEC values than
those under conventional farms.
The soils under organic farming recorded higher amounts of available N, P, K and S
than the soils under conventional farming in all the cropping systems. A substantial increase
in available status of Zn, Fe, Mn and Cu in soils of organic farms was observed. A marked
increase in dehydrogenase activity was observed in the soils of organic farms in all the
cropping systems. It is concluded that the soil properties get favourably influenced by organic
farming practice which in turn would enhance the soil health.
 
Date 2016-10-25T13:48:35Z
2016-10-25T13:48:35Z
2005
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81828
 
Format application/pdf
 
Publisher UAS, Dharwad