Abstract

A Field experiment was conducted in 2010 and repeated in 2011 cropping seasons at the Usmanu Danfodiyo University Teaching and Research Farm, Dabagi to determine the effect of intra row spacing on growth and yield of Lablab purpureus. Treatments consisted three intra row spacings (20, 30 and 40cm) laid out in a Randomized Complete Block Design (RCBD) replicated three times. The results of the trial showed that intra row spacing significantly (P < 0.05) affected stand establishment count with 20cm producing the highest (43.3)number of stands and plant height at week 3 after sowing in 2011 cropping season. Tallest plants (42.2 cm) were produced by 20cm intra row spacing. Leaf number was significant (P< 0.05) at 9 weeks after sowing in 2010 cropping season. Thirty (30) cm intra row spacing produced the highest no. of leaves (25). Leaf length was not significantly affected (P > 0.05) by intra row spacing. The longest leaf (9.9 cm) was produced by 30 cm intra row spacing. Leaf width was also not significantly affected (P > 0.05) by intra row spacing with 30 cm intra row spacing producing the widest leaf (8.9 cm). Dry matter yield was not affected (P > 0.05) by intra row spacing however, 30 cm intra row spacing produced the highest dry matter yield of 1707.7 kg/ha. It was concluded from this research that 30 cm intra row spacing produced the highest dry matter yield of Lablab purpureus (L) and is recommended for semi arid Sokoto environment.

Key words: Row spacing, Fodder yield, Lablab purpureus