Verification of Fungicide and Its Application Frequency for Management of Frog eye Leaf Spot (Cercospora capcisi) on Hot Pepper Under Rain Fed Condition at Bako

Feyera Takele Degefa

doi:10.7176/jbah/9-20-01

Abstract

Cercospora leaf spot is caused by Cercospora capcisi is an important disease which reduces the productivity of hot pepper (Capsicum spp.). Field experiment was conducted to evaluate different fungicides and its application frequencies against Cercospora leaf spot in order to select an important fungicides and its application frequency at Bako Agricultural Research Center. The experiment was laid out in randomized complete block design with three replication. Two different fungicides (Mancozeb 80WP and Trust-Cymocop 439.5WP) and four application frequencies (two, three, four and five) times with untreated control were used. Data on disease severity, area under disease progress curve, marketable yield and unmarketable yield of hot pepper were recorded. The result revealed that, both fungicides sprayed control Cercospora leaf spot which is significantly different from untreated check in disease severity, area under disease progress curve (AUDPC) and marketable yield. However, application frequencies of fungicides were not significantly different on disease severity, AUDPC and marketable yield of the plant. Application of Trust Cymocop 439.5WP reduces 26.67% relative yield loss of hot pepper over control check. An economic analysis was done for fungicides and shows feasibility of fungicide application for management of Cercospora leaf spot. Fungicide which has the highest Marginal Rate of Return was used for recommendation. Two times application of Trust-Cymocop 439.5WP was recommended to reduce disease severity and yield loss of the plant. Keywords: Cercospora leaf spot, frequency, hot pepper, and trust-Cymocop 439.5WP DOI : 10.7176/JBAH/9-20-01 Publication date :October 31 st 2019

Highlights

Background and JustificationHot pepper (Capsicums spp.) is the most common type of Capsicum spp which belongs to the family of Solanaceae
From pest’s factor, diseases caused by different fungi, bacteria and viruses are the major constraints of hot pepper production
Result and Discussion Effects of fungicide application on disease Severity Cercospora leaf spot of hot pepper was first observed at 88 days after transplanting

Summary

Introduction

Hot pepper (Capsicums spp.) is the most common type of Capsicum spp which belongs to the family of Solanaceae. It is one of major vegetable and spice crops loved for its aroma, taste, flavor and pungency (Zewdie et al, 2004). From pest’s factor, diseases caused by different fungi, bacteria and viruses are the major constraints of hot pepper production. Infection occurs when spores land on and directly penetrate leaves through natural openings and disseminated by wind, splashing water, or by contaminated equipment. For this reason, the yield of hot pepper much limited in the area. To alleviate this problem introducing effective fungicide and its application frequency is relevant to conduct the experiment

Methods

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Discussion

Conclusion