Abstract:
An experiment was conducted at the college of Agricultural studies farm at Shambat during the winter season 2017 - 2018. The objectives of the experiment were to study the effect of inter plant spacing, weeding and varieties on growth and yield of two sunflower varieties.The treatments were, inter plant spacing (15cm, 30cm), two varieties (Behooth,sirena) and weeding(Hand weeding, un weeding), Split- split Block Design with four replicates was use. Results showed that there were no significant differences on plant height(cm) and head diameter(cm) in all varieties as affected by weeding and inter plant spacing treatments, and significant effect on number of leave in the inter plant spacing, Result showed highly significant effect on leaf area (cm2) in weeding treatment, but no significant effect in inter plant spacing Results showed that in number of seed(g)had highly significant effect on inter plant spacing and significant effect in weeding treatments Result also showed that seed weight(g)had highly significant effect on weeding treatment and significant effect on inter plant spacing and varieties, Result showed that yield(t/ha)had significant effect on weeding treatment and no significant effect on inter plant spacing.
Result showed that the inter plant spacing 30cm is better than 15cm, Hand weeding is more effective than un weeding, and variety Behooth yielded better than Sirena.
