Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

DETERMINATION OF ROW SPACING BASED ON MORPHO-PHYSIOLOGICAL CHARACTERS IN AUS RICE (Pages : 34 - 37)

A field experiment was conducted at the field laboratory of the Bangladesh Agricultural University, Mymensingh, during the period from April to August 2011 to investigate the effect of variety and row spacing on morpho- physiological characters, yield attributes and yield of Aus rice. The experiment comprised of four Aus rice varieties viz., BR-26, BRRI dhan42, BRRI dhan43 and BRRI dhan48 and four row spacings viz., 15, 20, 25 and 30 cm. The hill to hill distance was 15 cm. The experiment was laid out in two factors randomized complete block design with three replications. Results revealed that plant height increased with decreasing row spacing while number of effective tillers, non-effective tillers and total tillers plant -1 , total dry mass hill -1 , absolute growth rate, relative growth rate, filled and unfilled grains hill -1 increased with increasing row spacing. However, in case of unit area basis, the seed and straw yield and harvest index (HI) was greater at closer row spacings than wider row spacings. The higher grain and straw yield per hectare and HI was observed in 15 and 20 cm row spacings with being the highest in 20 cm row spacing (3.42 and 5.68 t ha-1 for grain and straw yield, respectively). In contrast, the lowest seed and straw yield per hectare was recorded in 30 cm row spacing for lower accommodation of plants per unit area. The results indicated that 15 cm row spacing is optimum for BRRI dhan42 and BRRI dhan43, and 20 cm row spacing is optimum for BR-26 and BRRI dhan48 for getting maximum grain yield. Download