Ratooning technology: a crop management strategy to step up hybrid rice productivity
2011
Pinera, D.R. | Martin, A.A. Jr., Isabela State Univ., Echague, Isabela (Philippines)
Rice is an indispensable component in the meal of every Filipino. The country is consuming 33,000 tons of rice grains daily and the figure will increase as population increases hence, production must continuously increase to meet the increasing population. The challenge is to find new approaches and technologies to enable farmers to produce more rice with less land, water and input costs. The study aimed to evaluate the regrowth and yield performance of ratooned hybrid rice at varied rates of NPK fertilizers. The study was laid out in RCBD with the ratooning and fertilizer as treatments. The results of the study showed that the cut closed ratooned plants consistently produced the tallest plants at 30 and 60 DAR while the crushed ratooned plants produced the shortest plants. The number of productive tillers was highest on cut closed ratooned plants. Likewise, the plants that received the highest rates of nitrogen produced the least number of unproductive tiller count per hill. Longest panicles, more spikelet count, heavier weight of 10,000 seeds and heavier grain yield per sampling area were noted on cut close ratooned plants fertilized at the rate of 120, 24, 36 kg NPK per hectare out yielded the rest of the treatments. Hence it is recommended as crop management strategy on hybrid rice.
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