Fruit Tree Pathology Lab at Virginia Tech
You should always protect your fruit trees no matter which year we will have and what conditions we will expect. The key point is, which fungicides and bactericides we will apply and when we decide to apply them this year will critically impact the infection …
I. Apple Scab and Marssonina Leaf Blotch – why we had issues in 2022 and how to reduce overwintering inoculum? With the frequency and the amount of rains we received in 2022, managing scab and Marssonina Leaf Blotch (MLB) aka Apple Blotch disease was truly …
I. Act Now: Purchase New or Service Your Existing Weather Station(s) Connected to NEWA Plant Disease Models for 2023 Season! If your RainWise (now KestrelMet) weather station(s) have not have operated properly in 2022 as they had a faulty sensor for either leaf wetness, temperature …
AHS Jr. AREC in Winchester advertised an exciting job opportunity for Research specialist II in Tree Fruit Pathology program at Virginia Tech: https://careers.pageuppeople.com/968/cw/en-us/job/524378/research-specialist-ii This position is located in the northern Virginia, town of Winchester, in Frederick county, only 1.5 h from Washington D.C. The position …
1. Apple Scab and Marssonina Leaf Blotch were visible in the Shenandoah Valley apple orchards this year. As the fungi that cause these diseases overwinter in the dead leaf litter on the orchard floor, you can reduce apple scab ascospore inoculum dose by 50-70% and …
On 29 August 2022 we detected Marssonina Leaf and Fruit Blotch in a classic training system orchard of ‘Ginger Gold’ in Winchester, VA. The orchard was well protected until harvest, but after fruit were picked, disease moved in, and infect and yellowed some leaves. This …
First signs of bitter rot disease on fruit of apple cultivar ‘Golden Delicious’ have been found on 12 July in Winchester at AREC’s experimental Block 30 (Fig.1). Rot started from the sunny fruit side (Fig. 1). We found that bitter rot lesions were almost always …
Apple bitter rot is favored by rain events following the warm to hot weather periods like we had in the last 15 days. We also had a recent rain event above 2 inches (Wednesday, 22 June) when fungicide residues from a recent cover spray are …
By Dr. Srdjan Acimovic & Dr. Fatemeh Khodadadi Apple bitter rot disease was a widely present problem in apple orchards in 2021. This disease is caused by different fungi from Colletotrichum genus and is favored by warm, wet and humid weather conditions during …
1. Fire Blight symptoms are visible from natural infections in Central and Northern Virginia. If 1 to 5% or more fire flight flower clusters and shoots (strikes) are visible now, this means that you have an ongoing active infections taking place on actively growing shoots …