POTASSIUM FERTILIZATION MANAGEMENT IN COMMON BEAN PROTECTION AGAINST COLLETOTRICHUM LINDEMUTHIANUM

Wallysson Lima,Deurimar Gonçalves Júnior,Anatércia Alves

doi:10.21920/recei720206191220

Wallysson Lima, Deurimar Gonçalves Júnior + Show 1 more

Open Access

https://doi.org/10.21920/recei720206191220

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Abstract

Anthracnose of common bean caused by the fungus Colletotrichum lindemuthianum is considered one of the most important fungal diseases that attacks the aerial part of the common bean for causing significant losses in final productivity. Potassium is one of the elements that is involved in the defense of the plant. Thus, the objective was to evaluate the effect of potassium doses in the control of anthracnose in three common bean cultivars. The design used was completely randomized with five treatments in three repetitions. The severity of the disease was obtained at 15 days after inoculation using a diagrammatic scale of notes and by counting the number of lesions in the central and lateral leaflets and the length of the lesions in the midrib of the central leaflet.

Highlights

Anthracnose of common bean caused by the fungus Colletotrichum lindemuthianum is considered one of the most important fungal diseases that attacks the aerial part of the common bean for causing significant losses in final productivity
Anthracnose caused by the fungus Colletotrichum lindemuthianum is one of the most important fungal diseases that attack the aerial part of the common bean plant (Phaseolus vulgaris)
The seeds came from the common bean breeding program of Universidade Federal de Viçosa – UFV, Viçosa - MG

Summary

Introduction

Anthracnose of common bean caused by the fungus Colletotrichum lindemuthianum is considered one of the most important fungal diseases that attacks the aerial part of the common bean for causing significant losses in final productivity. The objective was to evaluate the effect of potassium doses in the control of anthracnose in three common bean cultivars. Potassium fertilization was efficient in controlling anthracnose in the pearl cultivar, reducing the severity of the disease at a dose of 180 kg ha-1 of potassium in the form of potassium chloride. Anthracnose caused by the fungus Colletotrichum lindemuthianum is one of the most important fungal diseases that attack the aerial part of the common bean plant (Phaseolus vulgaris). Chemical control and the use of resistant cultivars are the controlling anthracnose main methods in common bean. The resistance of fungi to fungicides has required research on alternative methods to integrated management (NOZAKI; KLIEMANN, 2016)

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