Effect of acidity amelioration practices on micronutrient availability for rice in Vaikom Kari soils of Kuttanad
Publication Date : 04/10/2017
Abstract A study was carried out in Vaikom Kari soils of Kuttanad, Kerala during the period from November 2014 to March 2015 to find out the availability of micronutrients viz. Fe, Mn, Zn, Cu and B as influenced by soil acidity amelioration practices for rice. The treatments included lime, dolomite and rice husk ash (RHA) applied as two splits one as basal and 30 DAS and the other as basal and one week before PI stage and a control without ameliorants. Lime treatments showed significantly lower values of available Fe. Higher soil available Mn was recorded by lime or dolomite treatments. Available Zn was not influenced by treatments at any of the stages. Soil available Cu status was the highest with control at PI stage and with dolomite as basal +PI at harvest stage. Lime, dolomite or RHA as basal + 30 DAS recorded higher B in the soil. The control plots recorded significantly lower status of available Mn and B and higher status of available Fe in the soil.
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