In terms of mean fruit weight, Equation Pro (450 g/ha) and Daconil SC 725 (3 L/ha) were increased yield 65.03 and 64.17 percent in compare to control, respectively, and were the best treatments.
Every seven to ten days, these fungicides must be reapplied in order to preserve new growth and counteract the effects of weathering, which removes the chemical from the leaf surface. Daconil SC 725 (3 L/ha) and Equation Pro (450 g/ha) were decreased DSI by 80.26 and 80.6 percent in compare to control, respectively. The majority of early blight treatment options rely on inexpensive protective fungicides like mancozeb and chlorothalonil. Also the results for 5 th assessment and AUDPC in both study years showed that Daconil SC 725 (3 L/ha) and Equation Pro (450 g/ha) with lowest mean based on DSI were the best treatments to control of Tomato Early blight disease. The results revealed that there were significant differences between treatments in DSI in all assessments, AUDPC and yield but there was no significant difference between treatments in number of fruits. Fungicides labeled for use on vegetables and containing copper or chlorothalonil may also provide control of early blight if they are carefully applied very. Chlorothalonil (Ortho Multipurpose Fungicide or Fertilome. Area under the Disease Progress Curve (AUDPC) was calculated using five separate disease assessments data, and effects of treatments on disease progress were also studied. Applications should begin when the first fruit is slightly larger than a quarter. Analysis of variance of two years data, were done at Randomized Complete Blocks Design (RCB) by SAS software, and means were compared with Duncan multiple range test. Yield of each plot was measured, and numbers of fruits for each plant were counted. Disease Severity Index (DSI) assigned by Foliage Protection Percentage (FPP) with causal agent by using Horsfall and Barratt method, before each spraying, and the later assessing was done 14 days after last spraying. Spraying of plots was started by early symptoms seen and continued with 5, 7 and 10 days intervals. Experimental plots inoculated with causal organism at the beginning of flowering stage. Chemical: Chlorothalonil Remarks: Fungicide Resistance Group M5. The season-dependent thresholds for Early Blight have been initially established for Maine. The experiments were carried out in a Randomized Complete Blocks Design (RCB) with eight treatments and four replications during two years in Karaj. Early blight control needs to be initiated from 450 to 700 Pdays from emergence, depending on the season. Effect of chlorothalonil (Daconil SC 725) and famoxadone + cymoxanil (Equation Pro WG %52.5) fungicides in control of Early Blight disease of tomato were evaluated under field conditions. Preventative sprays of a fungicide containing chlorothalonil used on a seven to ten day schedule gives effective control.
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