2022 Volume 12 Issue 1 Pages 149-155
The field experiment was conducted at Yezin Agricultural University Farm, Yezin, Nay Pyi Taw, during July to November wet season, 2020, to investigate the effects of chicken manure and chemical fertilizer applications on growth, yield and yield components of rice. The experimental design was a randomized complete block (RCB) design with four replications. The four treatments were T1 (control, no application), T2 (80 N, 20 P, 32 K) kg ha-1 (recommended rate), T3 (5 ton ha-1 of chicken manure), and T4 (2.5 ton ha-1 of chicken manure + recommended rate of fertilizer). Urea, triple superphosphate and muriate of potash were used as the N, P, and K sources and chicken manure was applied basally. The Sinthukha rice variety was tested. The plant growth parameters were recorded at biweekly intervals and the yield and yield components data were also collected at harvest time. The results show that the combined application of organic manure and recommended rate of fertilizer (T4 treatment) increased the number of panicles hill-1, number of spikelets panicle-1, filled grain percentage, and harvest index in comparison to other treatments. Moreover, the highest grain yield (6.87 ton ha-1) was observed in T4 treatment and the minimum grain yield (6.09 ton ha-1) was found in T1. Among the four treatments, T2 showed the second highest yield of rice in this study. The combined application of chicken manure and chemical fertilizer (T4) increased grain yield up to 12% over control. The application of chemical fertilizer only (T2) increased yields 7% more than the control. The application of chicken manure (T3) resulted in a 6% yield increase compared to the control. The application of chicken manure and chemical fertilizer (T4) increased yield per hectare by up to 6-12% more than the control. Therefore, the combined application of chicken manure and chemical fertilizer had the greatest effect on improving the yield of Sinthukha rice variety and maintaining soil sustainability.
