Ecology, Environment and Conservation Paper

ASSESSING THE RESIDUAL EFFECT OF INTEGRATED PLANT NUTRIENT SUPPLY SYSTEM (IPNSS) ON GROWTH AND YIELD OF RICE FALLOW BLACKGRAM

Naveen Prasath, P., P. Stalin, A. Balasubramanian and S. Sathiyamurthi

Abstract

The study was conducted during the year 2021 – 2022 at the experimental farm, Department of Agronomy to investigate the residual effect of IPNSS practices on the growth and yield of rice fallow blackgram ADT 5. The experiment was conducted with eight treatments with different quantities of nitrogen, green manure, pressmud biocompost, goat manure, seaweed extract and phosphate solubilizing bacteria on the base crop of rice and the residual study was conducted using the blackgram. The results of the study indicated that among the different treatments, 100% RDN + 25% N as Pressmud biocompost + PSB applied plots resulted in higher morphological characters, including plant height (25.87 cm), leaf area index (5.16), dry mater production (2309 kg/ha), number of branches/plant (6.86) and yield characteristics, including number of pods/plant (13.67), number of seeds/pod (5.52), grain yield (719 kg/ha) and haulm yield (1671 kg/ha) of rice fallow residual blackgram. Multiple parameters in the control treatment scenario indicated lower production and inadequate growth and development. The study revealed that application of 100% RDN + 25% N as Pressmud biocompost + PSB for base crop rice could be considered a better option for achieving the growth and yield attributes of ADT 5 under residual rice fallow condition.