Study on Rice Residue Management Options on Growth Parameters and Growth Indices of Rice Crop
A. Vijayaprabhakar *
Institute of Agriculture, Agricultural Engineering College and Research Institute (AEC and RI), Kumulur, Tamilnadu, 621712, India.
S. Nalliah Durairaj
S. Thangapazham Agricultural College, Vasudevanallur, Tamilnadu, 627758, India.
M. Hemalatha
Department of Agronomy, Agricultural College and Research Institute (AC and RI), TNAU, Killikulam, Tamilnadu, 628252, India.
M. Joseph
Department of Agronomy, Agricultural College and Research Institute (AC and RI), TNAU, Killikulam, Tamilnadu, 628252, India.
*Author to whom correspondence should be addressed.
Abstract
The research was conducted to study the effect of management options for combine harvested rice residue and its effect on succeeding rice crop growth responses. The experiment was laid out in field using a randomized block design with nine treatments and replicated three times. The computed biometric data were subjected to statistical scrutiny. Incorporation of combine harvested rice residue with 25 kg additional N ha-1 as basal + bio-mineralizer (2 kg t-1 of rice residue) and cow dung slurry (5%) recorded higher plant height, number of tillers, dry matter production (DMP), leaf area index (LAI), crop growth rate (CGR) and relative growth rate (RGR) of the succeeding rice irrespective of the growth stages. It was closely followed by straw incorporation with 25 kg additional N ha-1 as basal + cow dung slurry (5%). Incorporation of straw alone and removal of straw negatively influenced the rice growth and growth indices. Hence, it is advisable to incorporation of rice residue with additives for better growth and growth indices of rice crop.
Keywords: Rice straw, incorporation, additives, cow dung slurry, bio mineralizer