EFFECT OF FLY ASH, ORGANIC MANURE AND FERTILIZERS ON SOIL HEALTH AND PRODUCTIVITY OF RICE-WHEAT CROPPING SYSTEM IN ALFISOLS AND VERTISOLS
Loading...
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Indirra Gandhi Krishi Vishwavidyalaya Raipur
Abstract
Field experiment was conducted under Alfisols at KVK, Farm Katghora, Korba and Vertisols at Instructional Farm Indira Gandhi Krishi Vishwavidyalaya, Raipur during 2011, 2012 and 2013. To assess the effect of different doses of fly ash alone or in combination with manure and fertilizers in rice – wheat cropping system with Sixteen treatments ( i.e. Tl-Control, T2-10 t FA ha-1, T3-20 t FA ha-1, T4-STCR (Soil test based fertilizer recommendation), T5-75 % NPK ha-1, T6-100 % NPK (100:60:40), T7-75 % NPK ha-1+ 10 t FA ha-1, T8-75 %NPK ha-1 + 20 t FA ha-1, T9-100 % NPK ha-1+ 10 t FA ha-1, T10-100 % NPK ha-1 + 20 t FA ha-1, T11-75 % NPK ha-1+ 5 t FYM ha-1, T12-100 % NPK ha-1 +5 t FYM ha-1, T13-75 % NPK ha-1 + 5 t FYM +10 t FA, T14-75 % NPK ha-1 + 5 t FYM +20 t FA ha-1, T15-100 % NPK ha-1 +5 t FYM+10 t FA ha-1 and T16-100 % NPK ha-1 +5 t FYM+20 t FA ha-1) under Split Plot Design with factorial arrangment of crop and soil in main plot and treatment in sub plot. The soil pH and bulk density decreased with the application of fly ash alone or in combination with manure and fertilizers in Alfisol and Vertisol. The electrical conductivity and organic carbon significantly increased from initial values in Alfisol and Vertisol .The hydraulic conductivity and infiltration rate significantly increased due to application of fly ash alone or in combination with manure and fertilizer under Vertisol. The soil available N, P and K was significantly increased due to application of fly ash alone or in combination with 100 % NPK ha-1 +5 t FYM+20 t FA ha-1 in rice and wheat crops under Alfisol and Vertisol.The soil available micronutrients Fe, Mn, Zn and Cu significantly increases in rice and wheat under Alfisol and Vertisol. The soil available heavy metals (Cd, Ni,Cr and Pb) increased from the initial values. Microbial biomass carbon and dehydrogenase activity of soil significantly increases at harvest of crops under Vertisol.
The plant N and P content and uptake in grain and straw increases with 100 % NPK ha-1 +5 t FYM+20 t FA ha-1 in wheat Vertisol and rice under Alfisol. However, The higher K content in rice grain and wheat straw was recorded in 100 % NPK ha-1 +5 t FYM ha-1 +20 t FA ha-1 and 100 % NPK ha-1 +5 t FYM ha-1 under Vertisol. The higher K uptake in grain and straw was recorded in rice under Alfisol. The higher Fe and Cu content was recorded in rice and wheat under Vertisol. However, Mn and Zn content was recorded in rice under Alfisol. The Fe, Mn, Zn and Cu uptake in grain and straw was significantly recorded in rice under Alfisol with 100 % NPK ha-1 +5 t FYM+20 t FA ha-1 . The Cd and Ni content and uptake in rice and wheat grain and straw significantly increased but decreses from STCR based fertilizer recommondation under Alfisol. The Cr and Pb content in grain and straw significantly increased in wheat under Alfisol and Vertisol. The uptake of Cr and Pb content in rice grain and straw was higher under Vertisol with STCR based fertilizer recommendation.
The grain and straw yield of rice and wheat significantly increased with the application fly ash. The higher grain and straw yield was recorded in rice under Alfisol with STCR based fertilizer recommondation. It was at par with 100 % NPK ha-1 +5 t FYM+20 t FA ha-1. However, higher grain and straw yield of wheat was recorded in 100% NPK ha-1 +5 t FYM+20 t FA ha-1 under Vertisol.
Description
Keywords
Soil Science, Fly Ash
Citation
274p.