Effect of integrated nutrient management on yield and soil properties of rice (Oryza sativa)

Abstract

Fly ash is waste product that is produced in huge amount by combustion of coal in thermal power plants. The management of this huge amount of waste is a prime concern for the present and future at both regional as well as global level. Different types of nutrients and heavy metals are found in fly ash. The present study aimed to determine the effect of fly ash on soil health under sunflower spinach sunflower crop rotation. Three replications were carried out in a Randomized Block Design with seven treatments. The fly ash was applied T1, T2, T3, T4, T5, T6 and T7 at the rate of 0, 5, 10, 20, 30, 40 and 50 ton/hectare respectively. Most of the heavy metals such as Zinc, Copper and Iron were found higher at 0-15 cm depth of soil than the depth of 15-30 cm but Iron was found lower at 0-15 cm depth of soil than the depth of 15-30 cm. The heavy metals have significant effect on soil health on the accumulation of these elements.