Phosphate and potash fertilisation of rice in the clay loam soils of Kuttanad

Abstract

A field experiment was conducted at the Rice Research Station, Moncompu to assess whether rice crop can be raised without continuous application of phosphorus and potash in the clay loam soils of Kuttanad. The variety used wasTriveni. Results revealed that skipping of potash during the alternate seasons is not affecting the yield, end hence csn be adopted for economising ihe expenditure. Skipping of phosphorus is having depressing effect on yieid. Application of nitrogen alone without phosphorus and potash has shown significant reduction in yield, and the crop exhibited typical symptoms of phosphate deficiency.