An experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh from July to December, 2001 to study the performance of BRRI Dhan 32 in SRI and conventional methods and their technology mixes. The experiment was laid out in a split-plot design with three replications. The treatments used in the experiment consisted of (A) two planting methods viz., i) SRI planting method and ii) conventional planting method, (B) two types root placement e.g., i) J shape and ii) L shape and (C) three sources of fertilization viz., i) chemical fertilizer (N-60, P<SUB>2</SUB>O<SUB>5</SUB>-40, K<SUB>2</SUB>O-40, S-10, Zn-5 kg ha</FONT><SUP><FONT>-1</font></SUP><FONT >, respectively) ii) organic fertilizer (cowdung, 10 t ha</FONT><SUP><FONT >-1</font></SUP><FONT>) and iii) 50% chemical fertilizer + 50% organic fertilizer. Grain and straw yields were the highest (5.6 and 5.98 t ha</FONT><SUP><FONT>-1</font></SUP><FONT >, respectively) in SRI planting method. The highest grain yield of SRI planting method was mostly the outcome of higher total number of tillers hill</FONT><SUP><FONT >-1</font></SUP><FONT>, highest panicle length and highest number of grains panicle. Conventional planting method produced the lowest grain and straw yields (3.65 and 4.29 t ha</FONT><SUP><FONT >-1</font></SUP><FONT>, respectively). Among root placement methods L shape root placement found to be better and produced higher grain yield (4.97 t ha</FONT><SUP><FONT >-1</font></SUP><FONT>). Fertilization with 50% chemical fertilizer + 50% organic fertilizer performed the best regarding both grain and straw yields. The highest grain yield (5.04 t ha</FONT><SUP><FONT>-1</font></SUP><FONT >) and straw yield (5.67 t ha</FONT><SUP><FONT >-1</font></SUP><FONT>) were produced when 50% chemical + 50% organic were applied while the lowest ones were recorded in chemical fertilizer. </font></P> <P> </P>
Publisher:
Asian Network for Scientific Information, Pakistan