Effect of intra-row spacing and variety on growth and yield of onion (Allium cepa L.)

Abstract

Experiments were carried out at the Usmanu Danfodiyo University Teaching and Research Fadama Farm, Sokoto during 2005/2006 and 2006/2007 dry seasons to determine the effects of inter-row spacing and variety on growth and yield of bulb onion under irrigation. The treatments consisted of four intra-row spacing (10, 15, 20 and 25cm) and two onion varieties (Solara and Ex-maganawa). The treatments were factorially combined and laid out in a randomized complete block design (RCBD) replicated three times. Results obtained revealed that there was significant effects (P<0.05) of intra-row spacing and variety on the parameters investigated. The highest total biomass weight (53.33t/ha) was obtained from 15 cm intra-row spacing and ex-maganawa variety recorded the highest biomass weight (48.40 t/ha). Cured bulb yield was highest when 15cm intra-row spacing was used and ex-maganawa variety out yielded Solara. Interaction between variety and intra-row spacing was not significant for most parameters examined with the exception of fresh and cured bulb yields.