Abstract :
In order to evaluate the productivity of kenaf ( Hibiscus cannabinus L.)for seed and oil production ,this study was conducted during the growing season of year 1998 and 1999 to determine the productivity of three varieties (Vit11,Vso1and the local variety as a control) by effect four planting dates (20February,10March,30March and 20 April) on seed yield ,seed yield components , oil percentage and oil yield. The experiment design in both years was randomized complete block, replicated four times. The treatments were in a split plots arrangement where planting dates constituted the whole plots and varieties the sub plots. Seed yield differences were observed among varieties, planting times and their interaction .The local variety (the control)gave the highest seed yield (921.5 g /m2) when planted on 30 March followed by the variety Vso1(696.9 g /m2)then the variety Vit 11 gave the lowest seed yield (441.4 g /m2)when they planted on the same date. Earlier planting date and later than 30 March reduced the seed yield of all varieties significantly.
