Soy rust outbreaks down in 2014/15
The incidence of Asian soybean rust (Phakopsora pachyrhizi) has dropped heavily on this season’s Brazilian crop compared with last year, according to the soybean rust inspection service, the Consorcio Antiferrugem. Dry weather conditions are attributed as the reason for the reduced outbreaks. The service has detected 107 appearances of the disease so far this season. The average annual cost of fungicide control against rust is estimated at some US$2,000 million. Brazil’s Ministry of Agriculture is regulating the use of extensive fallow periods as a method of “non-quarantine” rust control. It issued a regulation last year. Each state would be responsible for regulating the policy within its boundaries, determining the dates for planting of each crop and the length of any fallow period. Several states already impose a 90-day fallow period.