EFFECT OF N, P AND K FERTIGATION LEVELS ON YIELD AND WATER PRODUCTIVITY OF DIFFERENT RICE (Oryza sativa L.) VARIETIES UNDER AEROBIC CULTIVATION


Abstract views: 32 / PDF downloads: 1

Authors

  • M. CHANDRIKA, M.UMA DEVI, V. RAMULU and M. VENKATA RAMANA

Abstract

Aerobic rice production is a revolutionary way of growing rice in well-drained, non -puddled, and nonsaturated soils without ponded water. This system
uses input-responsive specialized rice cultivars and complementary management practices using only 50- 70% of the water required for irrigated rice production.This is recommended in areas where water is too scarce or expensive to allow traditional irrigated rice cultivation. As water is becoming a scarce commodity nowadays and it is necessary to find ways and means of using the available water resources in a judicious manner to attain maximum productivity per unit quantity of water. In drip irrigation, water is provided most efficiently at right time and practically near the root zone of the crop. Generally, between 15 to 60 per cent of the fraction of the soil alone is wetted. It enables precise application of water and nutrients at precise zone avoiding soil erosion and drain of water by deep percolation. Irrigation is scheduled through drip to maintain the soil water content near field capacity in the root zone. Another advantage of the drip irrigation is the application of nutrients through
fertigation, which could reduce the total amount of nutrients needed by the rice crop thereby increase in nutrient use efficiency. Fertigation is a frontier
technology, which permits application of various nutrients and fertilizer formulations directly at the site of active roots in desired concentration, time and thus improves the nutrient use efficiency and the yield of crops. Information on the performance of aerobic conditions with drip fertigation levels is meager.

Downloads

Submitted

2017-02-22

Published

2017-02-23

Issue

Section

Articles

How to Cite

EFFECT OF N, P AND K FERTIGATION LEVELS ON YIELD AND WATER PRODUCTIVITY OF DIFFERENT RICE (Oryza sativa L.) VARIETIES UNDER AEROBIC CULTIVATION. (2017). The Journal of Research, PJTSAU, 44(1 & 2). https://epubs.icar.org.in/index.php/TJRP/article/view/68034