RESPONSE OF SOYBEAN (Glycine max) TO RHIZOBIAL INOCULATION AND PHOSPHORUS APPLICATION

Abstract

Experiment was conducted in the 2012 raining season under rainfed conditions in the Guinea Savanna zone of Northern Ghana to investigate the influence of phosphorus at different source, rates and rhizobium inoculants on performance and yield of soybean (Glycine max). The experiment was a factorial laid in a randomized complete block design with eight treatments and three replications. Parameters measured were plant height, leave area, number and weight of nodules, shoot weight and total grain yield. The results indicate significant increase in number of nodules, weight of dry nodules, weight of dry shoots and yield weight with rhizobium inoculants and application of phosphorus from different source. The present study recommends the use of rhizobium inoculants in treating soybean seeds before sowing and application of Triple superphosphate fertilizer at 30kg P/ha.