Abstract
The constant assessment of methods of disease control is essential in achieving production regularity and for ongoing increments in soybean productivity. Among the various diseases, the intensity of the white mold has been increasing, caused especially by the fungus Sclerotinia sclerotiorum (Lib.) de Bary. The present work has the objective to assess different seed treatments in association with fungicide application to control the white mold in soybean. The experimental design used was complete randomized blocks design with split plots. In the plots, the treatments were: control - no seed treatment; Certeza® (thiophanate methyl + fluazinam 45 + 60 g ha-1) and Trichodermil® (Trichodermaharzianum ‘1306’ 1.250 mL 100 kg-1 - 109 viable spores mL-1). In each seed treatment, the application was done on aerial part of subplots.The treatmentsin aerial part were: control (with no fungicides application); three applications of Derosal® (carbendazim) 1.000 gi.a./ha-1 in R1, R2 and R5.1; three applications of Cercobin 700 WP® (thiophanate methyl) 600 gi.a./ha-1 in R1, R2 and R5.1;Cercobin 700 WP® (thiophanate methyl) in R1, Sumilex (procimidone) 750 gi.a./ha-1 in R2 and Frowncide (fluazinam) 750 gi.a./ha-1 in R5.1.There were assessments on the emergence and height of the plants in V3 and the severity of the disease at the phenological stages R1, R3, R5.5 and R7. The variables thousand-grain weight, productivity and the economic analysis were determined after the harvesting of the plots. The treatments of seeds with thiophanate methyl+ fluazinam and Trichoderma harzianum and the applications of thiophanate methyl, procimidone and fluazinam on the aerial part stood out in the control of the disease. The net income showed that despite the high cost of the plant protection products, there were increases in the profitability of the crop. Key words: White mold, Glycine max, Economic analysis.
Highlights
The agricultural crop of greater growth in the Brazilian market is the soybean, which corresponds to 49% of cultivated area with grains, especially in the Midwest and South Regions
The plants emergence was not influenced by the seed treatment used, the height of seedlings and the field emergence were lower for the treatment with Certeza®, being below the average in both assessments performed (Table 1)
The fluazinam fungicide resulted in the lowest values of severity of the disease and number of Sclerotinia sclerotiorum
Summary
The agricultural crop of greater growth in the Brazilian market is the soybean, which corresponds to 49% of cultivated area with grains, especially in the Midwest and South Regions. Increase of its productivity in South America is the disease known as white mold, incited by the fungus Sclerotiniasclerotiorum (Lib.) de Bary. This disease has reported losses ranging from 10 to 20% of productivity, on average, in Brazil (Almeida et al, 2005), and losses ranging from 11.5 to 96% of productivity in an estimate made only in the Southern region of Brazil (Silva et al, 2011)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
