Dry-matter Partitioning and Nutrient Uptake of Rice (Oryza sativa L.) under Modified System of Rice Intensification

Abstract

A field experiment involving eight treatments with different spacing (25 cmrow spacing with 25 cm, 20 cm, and 15 cm intra-row spacing; and 20 cmrow spacing with 20 cm, 15 cm, and 10 cm intra-row spacing) and fertilizerlevels (100% and 125% Recommended Dose Fertilizer - RDF) was conductedin Tamil Nadu Agricultural University, Coimbatore, India during late Samba(September-January) season, 2018-19. The trial aimed to study the effectof high-density planting on dry-matter partitioning and nutrient uptake ofrice. The experiment was conducted in a randomized block design withthree replications. Results showed that higher dry-matter partitioning ofleaf, culm, root and panicle were obtained under closer plant spacing of20cm x 10 cm over other treatments while lower dry-matter accumulationwas recorded at wider crop geometry of 25cm x 25 cm. The nutrient uptakerecorded at 25cm x 15 cm with 125% RDF was superior over other treatmentsfollowed by 20cm x 10 cm with 100% RDF while the SRI method of planting(25cm x 25 cm) recorded lower nutrient uptake. The experimental resultsinferred that nutrient uptake is more similar to dry-matter. The conventionalmethod of cultivation with 20cm x 10 cm, produced more dry-matter in allplant parts of rice and foraged higher nutrients compared to all other widerspacing treatments with SRI methodology.

DOI

https://doi.org/10.29321/MAJ.2020.000340

Pages

30 - 35

Creative Commons

Copyright

© The Author(s), 2026. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords