Interplay of Rhizobial Inoculants and Fungicide on Chickpea (Cicer Arietinum) and Faba Bean (Vicia Faba L.) Nodulation and Seed Yield in Central Ethiopian Highland

Abere Mnalku Ygrem,Getahun Mitiku Benti

doi:10.12944/carj.9.1.04

Abere Mnalku Ygrem, Getahun Mitiku Benti

https://doi.org/10.12944/carj.9.1.04

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Abstract

Field and green house experiments were conducted on faba bean and chickpea during 2016-2017 to investigate the effect of fungicides and rhizobial inoculant interaction on nodulation and biomass accumulation of chickpea under Vertisol condition and (ii) faba bean under Nitisol condition. Chickpea seed was treated with Apron Star, Imidalm and both, and co-dressed with EAL-029 rhizobia simultaneously or a week later. Likewise, in one of the two sets, faba bean seed was treated with Apron Star and simultaneously dressed with FB-1017 or FB-1035 rhizobial strain. The other set had the same strains as pre inoculant and sprayed with Mancozeb at 30th day after sowing. Sole inoculants and N (faba bean) were used as check. The application rates of Apron Star, Imidalm, and inoculant were 2.5, 0.75, and 3.12 g kg-1 of seed while for Mancozeb is 2.5kg/ha. All treatments were replicated 4x and laid in RCB design. The result generally depicted that Apron Star application was compatible to EAL-029 rhizobia on chickpea. Staggered dressing of Apron Star and EAL-029 had better chickpea shoot dry matter accumulation. With regards to faba bean, co-dressing of Apron Star with FB-1017 or FB-1035 produced the highest nodulation. This confirmed the synergy of Apron Star with FB-1017 on Nitisol of central high land of Ethiopia. Moreover, spraying mancozeb on the 30th day after sowing to FB-1017 or FB-1035 preinoculated faba bean plant showed enhanced seed yield on Nitisol.

Highlights

Faba bean (Vicia faba L.) and chickpea (Cicer arietinum L.) are cool-season seed legume crops cultivated in the highlands of Ethiopia
The Vertisol is appropriate for the production of most field crops whereas liming would be essential on the Nitosol to improve inoculant performances (Mitiku and Mnalku),[7] and pH and faba bean seed yield (Agegnehu).[22]
Note that faba bean is moderately sensitive to low pH, growth is reduced at pH < 6

Summary

Introduction

Faba bean (Vicia faba L.) and chickpea (Cicer arietinum L.) are cool-season seed legume crops cultivated in the highlands of Ethiopia. Faba bean and chickpea cover 27 and 13% of the total area and 31 and 12% of the total production of pulses, respectively (CSA).[1] They have significant contribution in securing human and animal nutrition in the country. Their respective yields, 21 kg ha-1 and 16 kg ha-1, are significantly lower than their.

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