Vol. 11, Issue 11 (2022)

A field experiment was conducted to investigate the effect of secondary and micronutrient application under organic and integrated nutrient management practices on yield attributes, yield and nutrient uptake by upland rice, at farmers field, Venganoor, Thiruvananthapuram, Kerala, during June to September. Foliar spray of 0.5% prepared micronutrient solution (containing FeSO₄. 7H₂O (0.1%), ZnSO₄. 7H₂O (0.25%), borax (0.1%), MnSO₄. H₂O (0.025%) and CuSO₄. 5H₂O (0.025%)) or 1% Sampoorna KAU multimix (containing Zn (7%), B (4.5%), Cu (0.5%), Fe (0.2%), Mn (0.2%) and Mo (0.02%)) along with recommended dose of nutrients with lime or dolomite, produced significant increase in panicle weight, panicle length, number of spikelets per panicle and percent filled grains resulting in higher grain yield compared to the treatment receiving KAU PoP with lime or dolomite and without micronutrient application. Organic farming treatments supplemented with either of the micronutrient sources gave higher grain yield compared to pure organic treatment. Foliar application of micronutrients also resulted in significant increase in total uptake of macro and micronutrients.