The introduction of Medicago sativa in the semi-arid area of Ain-El-Hadjar (Saida), allowed us to study the response of inoculation of this legume with native rhizobia strains (M101, M306, M307) selected from the soils of the demonstration farm of ITELV compared to the introduced strains (ORN 06 ORN and 89).\\r\\nThe results obtained at the experimental fields namely on determining the number of nodules, the amount of dry matter of shoot and root parts which show significant variability between the effects of different strains that were analyzed statistically according to the test of the least significant difference (ANOVA P <0.05).\\r\\nSome strains introduced only as native have given quite significant results compared to controls and to the contribution of nitrogen fertilizer (urea). Increases in yields of biomass (stage 2 compound leaves) of about 20% compared with the control to indigenous strains and 17.5% for those introduced were recorded.\\r\\nAboriginal M307 strain distinguished compared to all other strains and compared to nitrogen fertilization with a biomass increase of 31% over the control and a value equal to that of nitrogen fertilization (stage 2 leaves place). But at flowering, forage yield exceeded that of nitrogen fertilization of 24% and 64% that of the control (with respectively 4.10 tons; 2.80 tons and 2.5 tons per hectare).

Username
Password