The seasonal impact on nodulation, growth and yield of soybean

Salih, S. H[1] , S.A.M. Hamid[1], Y. M. I. Dagash.[1]
Page No. 218-222

A field experiment was conducted during summer and winter seasons of (2010/2011) and
(2011/2012) years, on the Collage of Agricultural Studies Farm, Sudan University of Science and
Technology, Shambat, Khartoum North. To determine the effect of summer and winter seasons on
nodulation, growth, and yield of soybean Glycine max (L.) Merrill introduced genotype (E01). The
treatments consisted of inoculation with Bradyrihzobium janponicum, strain USDA 122 and control
(without inoculation) during two summers and winters season. A completely randomized block
design with four replicates was used. The results showed that inoculation with Bradyrihzobium
janponicum and winter's season gave significantly higher nodulation number/plant, relative growth
rate, and grain yield of soybean as compared to uninoculation plants and summers season.
Key words: Inoculation, nodulation, seasonal, impact, soybean.