Effect of Pistia stratiotes, cattle manure and wood vinegar (pyroligneous acid) application on growth and yield of organic rainfed rice

Abstract

The effect of soil incorporation of water lettuce (Pistia stratiotes) and cattle manure and of wood vinegar (pyroligneous acid) foliar application on growth and yield of rainfed rice was studied with a four replications split plot in a farmer’s field in Thailand. P. stratiotes incorporation significantly increased the grain yield over nonincorporation with P. stratiotes. Cattle manure incorporation alone or combined with wood vinegar application significantly increased grain yield over wood vinegar and no-fertilizer application. Incorporation of P. stratiotes combined with cattle manure and wood vinegar application could not provide sufficient N to the rice crop, but it adequate for P and K. Plots with cattle manure incorporation combined with wood vinegar application exhibited the maximum K, P and N content in soil after harvest.