-Win Cowgill, Professor and Area Fruit Agent
With full bloom on apple for us and our NEWA fireblight disease forecasting system calling for sever fireblight risk Monday through this Thursday, we covered up all apples and pears in bloom Sunday night and Monday at the Rutgers Snyder Farm.
For how to use NEWA see:
http://snyderfarm.rutgers.edu/weather-pest-forecasting.html
Of concern is any wetting from dews or spraying the could trigger a wetting event causing an infection. Mike Fargione, Cornell recommends “If you cannot get to all your high risk blocks, concentrate on those that are most at-risk including: all pears; apples where you had fire blight in the last 2 years; highly susceptible apple cultivars, particularly 2-4 year old trees on M9 rootstock.”
http://snyderfarm.rutgers.edu/weather-pest-forecasting.html
Of concern is any wetting from dews or spraying the could trigger a wetting event causing an infection. Mike Fargione, Cornell recommends “If you cannot get to all your high risk blocks, concentrate on those that are most at-risk including: all pears; apples where you had fire blight in the last 2 years; highly susceptible apple cultivars, particularly 2-4 year old trees on M9 rootstock.”
NEWA Fireblight forecast for Rutgers Snyder Farm, Pittstown, NJ on 4/17/12 |
