Influência de microrganismos benéficos na produtividade de feijão-caupi (Vigna unguiculata (L.)

Abstract

Cowpea (Vigna unguiculata) is a food rich in proteins, vitamins, minerals and represents an important nutritional source for brazilians. Due to its low productivity, the use of microorganisms for seed treatment, application at different phenological stages and control of plant diseases can be introduced in crop management, bringing benefits to producers. This work aimed to test the influence of bioproducts containing microorganisms on the agronomic performance of cowpea (Vigna unguiculata). The experiment was conducted in a Completely Randomized Design (CRD) in a 5 X 3 factorial design, consisting of five treatments, three times of application of the bioproducts and four replications. The treatments consisted of: control (T1 – control: without bioproduct), Trichoderma asperellum (T2), Bacillus subtilis (T3), Serratia sp. (T4), and a commercial product, Trichoderma harzianum (T5). In the obtained results, it was observed that the treatments T2, T3 and T4 significantly differed in the increase of the cowpea productivity, influenced by the bioproducts. The T2 treatment proved to be the best in pod production per plant and in seed productivity, while the T3 treatment showed the best result in the thousand seed weight. Given the above, the T2 treatment (Trichoderma asperellum) is the most efficient to increase cowpea production, regardless of the time of application.