Effect of intra-row spacing and variety on growth and yield of onion (<i>Allium cepa</i> 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.