Efficacy of four fungicide for control Botrytis cinerea in the cultivation of roses Rosa sp

Abstract

Introduction: Ecuador established farms with a wide variety of flower species including roses (Rosa sp.), which have pathogens that have affected them, including Botrytis cinerea, which is one of the main diseases that damage crops, causing significant losses, hence the need to conduct this research. Objective: To evaluate the effectiveness of 4 fungicides for the control of gray mold (Botrytis cinerea) in rose crops (Rosa sp.). Method: The fungicides used in the experiment were: boscalid + cyprodinil 0.75 cc / l, boscalid 1 g / l, thiabenzol 0.70 cc / l and thiophanate 0.50 cc / l; The test was carried out in four beds of 32 m long by 0.75 m wide, a total of 15 experimental units per repetition, the distribution of the treatments was done randomly; To evaluate the effectiveness of the fungicides, the variance (Anova) was calculated. Result: the severity, the first treatment T1 boscalid + cyprodinil showed an effectiveness index of 0.36, the second treatment T2 boscalid showed an effectiveness index of 0.36 and the third treatment T3 thiabendazole and thiophanate methyl showed a value of 0.29; On the other hand, the incidence and efficacy in T1 resulted in 0.37, T2 with 0.18 and T3 was recorded with a value of 0.35, reporting a significant behavior in the reduction of the incidence and improving its level of efficacy with the first treatment T1 boscalid + cyprodinil the third treatment T3 thiabendazole and thiophanate methyl. Conclusion: boscalid + cyprodinil and thiabendazole and thiophanate methyl were shown to be effective and efficient fungicides in the control and mitigation of Botrytis cinerea in rose crops, reporting the most significant values in the experiment.