Abstract— The study investigate the interaction of fertilizer level and weeding frequency on growth and yield of roselle in Yola , Adamawa State of Nigeria . It was observed from the results that all the parameters increased with increase in level of nitrogen fertilizer except number of days to first flowering and number of days to 50% flowering. For all the values of the parameters taken, the lowest was with treatment 0Kg/ha (control). This indicates that roselle performance increased with increased level of nitrogen fertilizer up to 150kgN/ha.
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