DYNAMICS OF ORGANIC INPUTS ON SOIL HEALTH, YIELD AND QUALITY OF CROPS UNDER CERTIFIED ORGANIC FARMS IN NAGPUR DISTRICT.
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Date
2019-08-07
Authors
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Publisher
Dr. Punjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
The certified organic farmers applying FYM @ 2.5 to 10 t ha-1, Ghanjivamrut 500 kg ha-1 and Jivamrut 500 lit ha-1 from last 8 to 18 years for different crops. The results revealed that soil pH was reduced due to continuous application of various organic sources to field. However, electrical conductivity of soil (0.254 to 0.497dS m-1) remained almost unchanged due to incorporation of organic and inorganic sources. The application of organic inputs increased organic carbon by 7.24 to 61.80 per cent at different locations over fertilizer applied field. The bulk density of soil decreased and hydraulic conductivity and water holding capacity increased by 2.87 to 18.72 per cent due to long term effect of various organic sources.
The application of organic sources from 8 to 18 years resulted in maximum available N content of soil by 14.61 to 64.57 per cent over the application of fertilizers alone. The available P content of soil after harvesting of crops varied from 12.09 to 25.56 kg ha-1 and comes under medium to high range categories. The application of organic sources from 8 to 18 years increase soil available potassium by 2.16 to 15.37 per cent over inorganic. The variation in available sulphur (10.64 to 15.38 mg kg-1) was observed and it found low to moderately high amount in all locations. The use of FYM, manurial liquid and solid organic source was found useful in maintaining the available micro-nutrient status of soil over the continuous use of fertilizer. The maximum microbial count was recorded in organic field over the inorganic field. The count of bacteria, fungi and actinomycetes were varied from 15.75 to 25.25 X 107 cfu g-1, 9.0 to 15.75 X 105 cfu g-1 and 7.50 to 14.75 X 105 cfu g-1, respectively.
The quality of crops was improved with application of organic inputs over the fertilizers application. The protein per cent of different crops was found maximum in organic field. The oil per cent was recorded nearly same in the organically and inorganically grown crop. From the study it can be concluded that, the application of organic inputs improve the physical, chemical, biological properties and fertility status of soil. In case of yield due to organic sources decreased but quality improved.
Description
Soil samples were collected randomly after the harvest of crops from six locations viz., Selu, Kalmeshwar, Gangner, Saoner, Chacher and Chinchbhavan of Nagpur districtto assess the physical, chemical and biological properties of soil under long term organic farming and study the biological yield performance and quality of different crops. The application of organic inputs improve the physical, chemical and biological properties and fertility status of soil. Application of fertilizers recorded higher productivity of different crops than the application of various organic sources alone. In case of yield due to organic inputs decreased but quality improved.
Keywords
Soil Science and Microbiology, Soil Sciences, Organic matter.
Citation
PANGHATE, PREMANAND ARUN. (2019). Dynamics of organic inputs on soil health, yield and quality of crops under certified organic farms in Nagpur district. Department of soil science and agricultural chemistry,Nagpur. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2019. Print. xiii, 81p. (unpublished).