Studies on integrated plant nutrient supply system for maximizing the growth and yield of rice (Oryza sativa L.)

Abstract

The research was conducted to determine how rice growth and productivity would be impacted using graded amounts of inorganic fertilizer in conjunction with organic manures and bio fertilizer in rice variety TRY 3 at Annamalai University's Experimental Farm, Tamil Nadu, India. This investigation on crop response-based fertilizer prescriptions together within Integrated Plant Nutrient Supply System (IPNSS) was conducted during 2021 and 2022. Different quantities of nitrogen, green manure, pressmudbiocompost, goat manure, seaweed extract, and phosphate-solubilizing bacteria (PSB) were employed in the eight treatments. The treatments were replicated thrice, and the field trial was laid out using randomised block design (RBD). According to the research outcome, among the different treatments, 100% RDN + 25% N as Pressmudbiocompost + PSB resulted in higher morphological characters, including plant height (124.11cm), leaf area index (4.84), dry mater production (13012 kg/ha), number of tillers/hill (33.30), chlorophyll content (30.66), root length (28.39 cm) and volume (23.64 cc/hill) and yield characteristics, including productive tillers/hill (31.30), grains/panicle (153.70), and filled grain/panicle (147.40),grain yield (6693 kg/ha) and straw yield (7865 kg/ha)of rice. Multiple parameters in the control treatment scenario indicated lower production and inadequate growth and development. The study revealed that application of100% RDN + 25% N as Pressmudbiocompost + PSB could be considered a better option for achieving the growth and yield attributes of TRY 3 under transplanted condition.