Abstract
The influence of organic manure from different sources applied at different time intervals before planting on the rhizome yield and nutrient N uptake of ginger was evaluated in 2009 and 2010 cropping seasons at the National Root crops Research Institute, Umudike. Treatments consisted of organic manure from three sources (Poultry manure, Rice mill waste and Cow dung manure) factorially combined with five manure application times ( during planting, 1, 2, 3, and 4 weeks before planting) in a Randomized Complete Block Design with 3 replications. Results showed that both organic manure source and time of application significantly (P ≤ 0.05) affected fresh rhizome yield of ginger in the Guinea Savanna. Highest mean rhizome yields of 8.40 t/ha and 8.30 t/ha were obtained from poultry manure amendment while rice mill waste amendment produced the least yield. Compared with either the control or other manure application time treatments, mean rhizome yields were relatively lower when ginger was planted earlier than 2 weeks after manure amendment. Highest N uptake was observed in poultry manure treatment and when manure was applied 2 weeks before planting of ginger.
Keywords:
application
performance
nutrient
organic
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