Estudio del control biológico y químico de la roya (Puccinia pittieriana H.) en cultivo establecido de tomate riñón (Solanum lycopersicum Mill) Cv. Dominique en invernadero.

Abstract

This research aimed to study the application of biological and chemical control on Rust (Puccinia pitteriana H.) on tomato (Solanum lycopersicum Mill.) cv. Dominique cultivated in greenhouse. A randomized complete block design was used with four treatments, a control and four replications, each experimental unit was constituted with 40 plants to evaluate the variables incidence, severity, area under the disease progress curve (ABCPE), biological efficacy and yield were evaluated. Observations were made at 9-day intervals to determinate incidence and severity, applications were made every 10 days, Pre-established formulas were used to determinate the area under the disease progress curve and biological efficacy, the harvest was carried out on a weekly basis and to determinate the yield,. The results obtained were tabulated in Excel and then processed in the statistical software Infostat student version 2020 for statistical analysis, the same were plotted using the software R Studio version 4.1.2. The analysis of variance showed highly significant effects in the biological treatment Trichoderma harzianum and chemical treatment Pyraclostrobin + Epoxiconazole in a period of 10 days as results of a final severity 0%, ABCPE of 16.43 and 14.58 respectively and yield 4.59 and 4.58 (kg/plant) respectively were obtained. It was concluded that the best treatments for the control of Puccinia pittieriana were Trichoderma harzianum as biological control and Pyraclostrobin + Epoxiconazole as chemical control. It is recommended to carry out research work by testing different doses, frequency, and number of applications of the treatments used in the present study.