Nitrogen fertilization and tillage system: effect on plant growth, and yield of paddy rice
1997
Isnaini, S. | Maryati (Sekolah Tinggi Pertanian Surya Dharma Bandar Lampung, Bandar Lampung (Indonesia)) | Hermawan, W.
An experiment of N fertilizers and tillage system was conducted on Inceptisol at Kedaloman village, Talangpadang, Tanggamus from May 1996 to August 1996. The objectives of this research were to investigate the effect of interaction between N fertilizers and tillage system on plant height, tillering number, component of yield, and yield of lowland rice. The experiment 4x3 factorial was arranged in a randomized complete block design with three replications. The treatments consisted of four levels of N fertilizers (without-N, 57.50 kg/ha N, 86.25 kg/ha N, and 115.00 kg/ha N) and three tillage system (conventional tillage, no-tillage with standing ratoon, and no-tillage with dropped ratoon). Plant height and tillering number were analyzed with ANOVA and means difference with LSD by alpha = 0,05. The component of yield were analyzed with the backward elimination procedure of regression, whereas rice of yield with regression. The result of the experiment showed that interaction effect between N fertilizers and tillage system had not influenced on all variable observations. Nitrogen fertilizers 115.00 kg/ha N did not significant with 86.25 kg/ha N on plant height and tillering number. Tillage system was significant on plant height and tillering number. Component of yield were not occurred on yield of rice at without-N; at 57.50 kg/ha N was spikelet number per panicle, 86.25 kg/ha N was length of panicle and percentage of filled spikelet; and 115.00 kg/ha N was panicle number per plant and length of panicle. Nitrogen fertilizers in various tillage systems had not achieved the optimum yet
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