1. IMPORTANT NOTICE: Please read first! DISCLAIMER: The following translated document originates from Brazil, is based on Brazilian data and experience, and was developed by EMBRAPA for Brazilian farmers. Aspects of SBR development and fungicide efficacy comparisons may not be the same under U.S. and Brazilian conditions. Similarly, certain control measures suggested by Brazilian officials reflect the unique SBR situation in Brazil, as well as year-round soybean production in certain parts of that country. Therefore, do not use this information for making fungicide purchasing or SBR control decisions in the U.S. Instead, use control measures developed by your state’s Land Grant University scientists. Be advised that fungicide product names for the same active ingredient and manufacturer are typically different for Brazil and the U.S.; however, the common names for the active ingredient (such as tebuconazole or propiconazole or azoxystrobin) are the same in both countries. For more information or clarification about the translated document, contact: D. Hershman Extension Plant Pathologist University of Kentucky, Princeton, KY dhershma@uky.edu

2. When to control ? Scouting fields/sentinels to observe at the earliest sign of infcetion. Spray right after first symptoms are observed (pustules on plant botton leaves) or spray preventively, considering: Presence of symptoms in the sentinel plots, Reduced operational capacity, Favorable weather conditions, Plant development stage, Rust present in the region, Incidence of other diseases (broad range fungicide). Chemical Control

3. Number of sprays ? Stage of plant development when rust occurs Stage of plant development when rust occurs Reincidence of rust Reincidence of rust Cost/benefits of the treatment (V2?) Cost/benefits of the treatment (V2?) W.M.Paiva VegetativeReproductive

4. Products Registered for rust control in Brazil AGROFITwww.agricultura.gov.br

5. Active ingredient Rate (g i.a./ha) Comercial product 1 - Check 2 - azoxystrobin 50Priori 3 - difenoconazole50Score 4 - tetraconazole50Domark 5 - fluquinconazole62,5Palisade 6 - flutriafol62,5Impact 7 - tebuconazole 250100Orius 8 - tebuconazole 200100Folicur 9 - myclobutanil 100Systhane 10 - pyraclostrobin + epoxiconazole66,5+25Opera 11 - trifloxystrobin + ciproconazole56,2+24Sphere 12 - azoxystrobin + ciproconazole60+24Priori Xtra 13 - trifloxystrobin + propiconazole 50+50Stratego 14 - propiconazole125Juno 15 - epoxiconazole37,5Opus Soybean rust

6. Fungicidas registrados no MAPA para o controle da ferrugem da soja (Phakopsora pachyrhizi) - observar cadastro no estado continua

7. continuação

8. Spray Technology N.S. Almeida

9. IMPORTANT Reach the target with an adequate coverage. (minimun 60 drops/cm 2 ) ) Efficiency of fungicides is closely related to spray techniques J.T. Yorinori

10. The Green Bridge Problem Primavera do Leste, MT – 2003

12. Lesion type TAN – no necrosis Lesion type RB - reddish brown J.T. Yorinori A. Tschanz C.V.Godoy RESISTANCE

13. Resistance:  There are four major genes: Rpp1, Rpp2, Rpp3 e Rpp4  Resistant cultivars BRS 134 BRSMS Bacuri CS 201 FT-2 FT-3 FT-17 FT-2001 Campos Gerais KIS 601 Ocepar 7

14. Pirarara Tianá

15. MTBR 19923

16. Screening Genotypes

17.  Crop Management between seasons oEliminate volunteer plants oAvoid a second soybean crop (“safrinha”) oAvoid winter irrigated soybeans. Need 3-4 sprays STRATEGIES FOR CONTROL

18. Early sowing with early maturing cultivars = SCAPE Spray at the right time.

19. Kudzu (Pueraria lobata) Soybean Volunteer plant W.M. Paiva

20. Kudzu infected with rust and soybeans, side by side in Paraguai.

21. J.T. Yorinori Early plantings producing inocula for late plantings

22. Scouting and Chemical Control Plot Sentinels Susceptible cultivars sowed before normal time without fungicide treatment

23. Make the scouting as large as possible, keeping more attention to the first sowings and humid areas Walking and frequency of sampling: 1.after emergence and intensify after flowering; 2.after evidences of infection in the region Scouting and Chemical Control

24. Colect middle and bottom leaves J.T. Yorinori Scouting and Chemical Control

25. Look for symptoms of rust Scouting and Chemical Control

26. Incubate leaves for easy diagnosis In case of doubt, send leaves to well trained laboratory for diagnosis J.T.Yorinori Scouting and Chemical Control

27. http://www.cnpso.embrapa.br/alerta Laboratories localized in the principal regions

28. http://www.cnpso.embrapa.br/alerta Rust Dispersion Information System