STUDIES ON THE PHOSPHATIC AND POTASSIC FERTILIZERS REQUIREMENT OF MULBERRY (Morus alba L.) BASED ON SOIL TEST VALUES

Abstract

Two field experiments with different levels of phosphorous and potassium fertilizers were conducted to determine phosphatic and potassic fertilizers requirements of mulberry under rain fed condition based on soil test values. The biomass production (yield) of mulberry at different levels of phosphorus and potassium fertilizers were subjected to Mitscherlish- Bray equation to estimate
the important parameters responsible for mulberry growth and production, namely, theoretical maximum yield (A), efficiency factor for soil nutrient(C1) and efficiency factor for added fertilizer nutrient (C). By utilizing the estimated C1 and C values, a ready reckoner of phosphatic and potassic fertilizers requirements for mulberry has been prepared with respect to sandy loam soil.