Plant & Pest Advisory» All Fruit Articles


As I See It- Apple Thinning, Apogee, Fireblight

-Win Cowgill, Professor and Area Fruit Agent

Apples are in full Bloom in Hunterdon County, NJ. First bloom occurred on Krimps Pink on April 11 at Rutgers Snyder Farm. Bloom is three weeks early for us on apple and was four weeks early on peach.

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:

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