Rhizobial status and strain identification of some pulse fields of northern Shoa
1999
Aynabeba Adamu (Institute of Biodiversity Conservation and Research, Addis Abeba (Ethiopia))
This study concentrated in the northern shoa zone, where faba bean yield has decreased. Composite woil samples were taken from representative areas of two yield depleted areas, Molale and Mehal-Meda and two yield sustained areas, Keyt and Ankober. Soil analysis was done on the four soil samples to know their nutrient content and status of rhizobial population. It was found that the nuber of rhizobia per gram of yield depleted area soils was very low where as it was very high in the yield sustained area soils. From the results of the soil analysis and the pot experiment it was concluded that the yield depleted area soils have very low rhizobial population. But not the reason for poor growth of faba bean in these areas, since there is enough amount of nitrogen in the soil.
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