There has been much debate in recent years on whether Smith periods are still relevant, as the current aggressive strains can infect crops at lower temperatures. So what is being done to improve the forecasting of this disease? Smith Periods were developed in 1956 by an agricultural meteorologist, LP Smith, and came into operation in 1975 as the accepted forecasting tool for late blight in the UK.  See also: Farmers Weekly Academy: understanding blight The Smith period consists of two […]