Abstract

A pot experiment was conducted during 1997 with groundnut (VRI 2) using laterite soil to study the effect of flyash (FA) alone and in combination with compost and fertilisers on nutrient uptake, yield of groundnut and available NPK status of the post- harvest soils. The results showed that the application of FA either alone or when integrated with other components increased the nutrient uptake and yield of groundnut significantly. The presence of essential plant nutrients, and the physical properties FA could be attributed for its favourable effect on yield of groundnut as well as for the sustenance of soil fertility. It was also inferred that integration of FA with other components of the nutrient supply system, on account of the synergistic effects had resulted in better nutrient uptake, higher yield and soil fertility sustenance.

Keywords: Flyash, Compost, Fertilisers, Groundnut, Yield, Uptake of nutrients, Available nutrients