Effect of rhizobial inoculation, chicken manure and nitrogen fertilizer on growth and yield of guar (Cyamopsis tetragonoloba L. Taub)

Nazar N. Babiker, Hashim M. Babiker, Nuri O. Mukhtar


Field experiments were conducted for two consecutive seasons (1999/00 and 2000/01) in the experimental farm of the Gezira Research Station (Agricultural Research Corporation Wad Medani, Sudan), to study the effect of nitrogen, Bradyrhizobium inoculation, chicken manure(CM) and inoculation plus chicken manure on growth and yield of guar under irrigation. Four Bradyrhizobium strains were used in this study: USDA 3089, USDA 3385, USDA 3386 and ENRRI 16 A and two levels of chicken manure 5 and 10 t ha‾ ¹. Results showed that the treatments containing Bradyrhizobium strains and CM significantly increased plant height, shoot dry weight, yield, P and nitrogen percentages. Bradyrhizobium inoculation significantly increased plant height, shoot dry weight and pod dry weight. Sole CM treatments significantly increased shoot dry weight, pod dry weight, plant height, seed yield and seed P percent. Nitrogen application showed similar results to that of CM except that nitrogen had no significant effect on seed P percent.

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