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1. As Predicted Previously Weather in the Past 15 Days Favors Apple Bitter Rot; 2. Apply Fungicides According to the Rain Amounts and Frequency

1. As Predicted Previously Weather in the Past 15 Days Favors Apple Bitter Rot; 2. Apply Fungicides According to the Rain Amounts and Frequency

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 

1. Apple Bitter Rot Pressure Builds Up Late May to Early June in Virginia with Warm Wetting Events; 2. Fungicide Timing Dictated by Critical Rain Events

1. Apple Bitter Rot Pressure Builds Up Late May to Early June in Virginia with Warm Wetting Events; 2. Fungicide Timing Dictated by Critical Rain Events

  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. If Fire Blight Visible Use These Spray and Symptom Removal Options;  2. SB&FS Model Link and Spray Options

1. If Fire Blight Visible Use These Spray and Symptom Removal Options; 2. SB&FS Model Link and Spray Options

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 

Research Specialist Position Open at VT’s AHS Jr AREC Plant Pathology in Winchester VA – Please Share or Suggest Candidates

Research Specialist Position Open at VT’s AHS Jr AREC Plant Pathology in Winchester VA – Please Share or Suggest Candidates

AHS AREC in Winchester has a new Research Specialist position open in the Plant Pathology program. I would appreciate it if you could share it with any interested candidates, or post it to any local advertisement boards, papers, or e-mail lists, which would help it 

1. First SB&FS Infections Predicted/Occurred As Per NEWA Model, Varying by Location; 2. First Brown Rot Visible On Cherries

1. First SB&FS Infections Predicted/Occurred As Per NEWA Model, Varying by Location; 2. First Brown Rot Visible On Cherries

1. Sooty Blotch and Flyspeck (SBFS) of apple are caused by a large group of fungi which grow superficially on waxy cuticle of apple fruit. Usually, flyspeck caused by Zygophiala jamaicensis shows first and then the sooty blotch appears, which is caused by a complex 

First Rust and Secondary Powdery Mildew Symptoms Visible on Apple Leaves in Winchester VA

First Rust and Secondary Powdery Mildew Symptoms Visible on Apple Leaves in Winchester VA

All the major apple fungal diseases in the Shenandoah Valley are visible, except apple scab. This morning I found first fresh rust (Fig. 1, 2) and powdery mildew (Fig. 3) infections of this season on unsprayed ‘Ginger Gold’ and ‘Pink Lady’ trees here at AREC. 

First Blossom Blight Symptoms Visible in Winchester at AREC Trial (Infections 23-25 April)

First Blossom Blight Symptoms Visible in Winchester at AREC Trial (Infections 23-25 April)

(I) In our research trial at AREC we detected today first fire blight symptoms on 17 May on ‘Fuji’ flower clusters and shoots. We inoculated whole ‘Fuji’ trees with fire blight bacterium Erwinia amylovora on 23, 24, and 25 April (late April heat wave) at 

Kick-back Materials for Last Major Scab Infections 6 & 7 May; Primary Scab Season Is Over But Rusts Continue; Fire Blight Infection 4, 5 or 7 May

Kick-back Materials for Last Major Scab Infections 6 & 7 May; Primary Scab Season Is Over But Rusts Continue; Fire Blight Infection 4, 5 or 7 May

1. The primary scab season in Virginia is over as the ascospore reserves have been depleted from the leaf litter below 5%. The 6 and 7 May heavy rain events have triggered the last severe primary scab infection and if you did not cover with 

1. Fire Blight Infection Possible May 2-4 Depending on a Location; 2. Scab, Rust, Powdery Mildew Still Relevant Threats

1. Fire Blight Infection Possible May 2-4 Depending on a Location; 2. Scab, Rust, Powdery Mildew Still Relevant Threats

1. In and near Winchester, the NEWA’s EIP model is calling for infection on 4 May with the thunderstorm rain events we might get this afternoon, evening or tomorrow morning. In central Virginia, apple orchards are at or past petal fall, so any late blooming 

A Few Points on Strep Use and Options for Using Apogee/Kudos in Shoot Blight and Canker Management on Apple

A Few Points on Strep Use and Options for Using Apogee/Kudos in Shoot Blight and Canker Management on Apple

1. Blossom Blight Management – Follow Up on Recent Specific Questions Apply streptomycin with Regulaid or LI700 just before or within 24 h after the wetting event that is predicted by RIMpro and/or Maryblyt (Infection Potential EIP value in NEWA) to allow fire blight infection.