Agricultural and Biological Sciences Journal
Articles Information
Agricultural and Biological Sciences Journal, Vol.1, No.4, Aug. 2015, Pub. Date: Jun. 16, 2015
Variation of Growth, Yield and Protein Content of Transplant Aman Rice by Three Agronomic Practices
Pages: 167-176 Views: 2337 Downloads: 1028
Authors
[01] Susmita Ray, Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh.
[02] Md. Abdur Rahman Sarkar, Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh.
[03] Swapan Kumar Paul, Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh.
[04] A. K. M. Mominul Islam, Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh.
[05] Sabina Yeasmin, Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh.
Abstract
The research work was conducted to find out the effect of variety, spacing of transplanting and nitrogen (N) rate on the growth, yield and protein content of transplant aman rice. The experiment consisted of three rice varieties: BR11, BRRI dhan49 and BRRI dhan56; two spacings of transplanting: 25 cm × 15 cm and 20 cm × 10 cm; and three N-levels: 0, 60 and 80 kg N ha-1. Morpho-physiological characters, yield contributing characters and yield of transplant aman rice were significantly influenced by variety, spacing of transplanting and N rate. Experimental results indicated that BRRI dhan49 in combination with 25 cm × 15 cm spacing and 80 kg N ha-1 gives the highest leaf area index, total dry matter content, crop growth rate, number of effective tillers hill-1 and number of grains pancle-1, and lowest number of sterile spikelets panicle-1 and sterility percentage of grain. These growth and yield parameters attributed the highest grain yield (5.51 t ha-1) by this combination. In terms of grain protein content variety BR11 combination with spacing 20 cm × 10 cm with 80 kg N ha-1 appears the highest (9.05%). The value was statistically similar with the combination of BRRI dhan49, 25 cm × 15 cm spacing and 80 kg N ha-1 (8.91%). Therefore, it can be concluded that BRRI dhan49 combined with 25 cm × 15 cm spacing and fertilization with 80 kg N ha-1 appears as the promising practice for the maximization of grain yield and protein content of transplant aman rice.
Keywords
Aman Rice, Leaf Area Index, Total Dry Matter, Crop Growth Rate, Protein Content
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