Vol. 9, Issue 3 (2021)
Impact of organic inputs on fertility status of soil under certified organic farms in Nagpur district
Author(s): Umakant V Thawale, Ommala D Kuchanwar, Neha Chopde, Kajal D Bhoyar, Padmaja H Kausadikar, Tushar K Nakade, Nishigandha Mairan and Kirtimala R Gopal
Abstract: The field investigation in relation to "Impact of organic inputs on fertility status of under certified organic farms in Nagpur district” was carried out during Kharif-rabi season of 2019 - 20 at the certified organic farmer’s fields of Nagpur district to assess the soil properties, quality and yield of different crops as influenced by various organic resources. Soil samples of 0-20 cm depth were collected randomly after the harvest of crops from six locations viz., Selu, Kalmeshwar, Gangner, Saoner, Chacher and Chinchbhavan of Nagpur district were selected for recording various observations and collected plant samples for quality parameters. 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 9 to 19 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 (0.289 to 0.479 dS m-1) remained almost unchanged due to incorporation of organic and inorganic sources. The application of organic inputs increased organic carbon by 5.95 to 55.32 per cent at different locations over fertilizer applied field. The application of organic sources from 9 to 19 years resulted in maximum available N content of soil by 13.50 to 63.35 per cent over the application of fertilizers alone. The available P content of soil after harvesting of crops varied from 12.55 to 25.25 kg ha-1 and comes under medium to high range categories. The application of organic sources from 9 to 19 years increase soil available potassium by 2.12 to 13.58 per cent over inorganic. The magnitude of available K ranged from 319.45 to 474.34 kg ha-1. The available sulphur ranged from 10.64 to 15.38 mg kg-1 i.e. marginal to adequate. The variation in available sulphur (10.67 to 15.67 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 status of DTPA extractable micronutrients Zn, Fe, Mn and Cu (mg kg-1) range from 0.52 to 0.70, 3.69 to 8.75, 4.08 to 7.87 and 2.55 to 4.89 respectively when the use of organic and inorganic sources.
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How to cite this article:
Umakant V Thawale, Ommala D Kuchanwar, Neha Chopde, Kajal D Bhoyar, Padmaja H Kausadikar, Tushar K Nakade, Nishigandha Mairan, Kirtimala R Gopal. Impact of organic inputs on fertility status of soil under certified organic farms in Nagpur district. Int J Chem Stud 2021;9(3):14-18.
