أثر الاستخدام المتكامل للسماد الإحيائي و الكيميائي على إنتاجية الفول المصري (Vicia faba L.)‎ في السودان

الملخص EN

Three field experiments were carried out at the demonstration farm of Agricultural Research Corporation - Sudan, in different locations (Dongola, Elhudeiba and Shendi) to investigate the effect of bio-fertilizer (Rhizobium - strain ENRRI 9) (Phosphobacterin) and chemical fertilizers (Urea 46 % N + phosphorus 48 % P205) single or integrated on yield of faba bean (plant cv.

Hudeiba 72).

The treatments were arranged in CBRD with four replications.

The results revealed that fertilization by Rhizobium alone or integrated with phosphobacterin had a significant increase on yield of faba bean compared with the control in Dongola site.

While, the yield significantly increased when plants were treated with phosphobacterin alone in Dongola and Elhudeiba sites.

The results showed that, single addition of chemical fertilizer significantly increased yield of faba bean compared with control in Dongola and Elhudeiba sites.

The present data revealed that the yield production of faba bean in three sites is economically feasible.

The integration between Rhizobium and phosphobacterin fertilizer gave the highest profit rate in Dongola and Elhudeiba sites.

While, the integration between phosphobacterin and chemical fertilizer gave the highest profit rate in Shendi site.

All results in the study indicated that, for the highest profit rate it is recommended to use bio-fertilizers, as its higher profitability than chemical fertilizer.

Key words: faba bean - Rhizobium - phosphobacterin - chemical fertilizers - bio-fertilizers.