Posts

1. If Young or Cider Trees in Bloom, 8 May Fire Blight Infection Needed Streptomycin; 2. Primary Scab Season Over in South VA but Juniper Rusts Continue to Infect Apples; 3. Powdery Mildew is a Risk

1. If Young or Cider Trees in Bloom, 8 May Fire Blight Infection Needed Streptomycin; 2. Primary Scab Season Over in South VA but Juniper Rusts Continue to Infect Apples; 3. Powdery Mildew is a Risk

1. If any young trees planted late are in bloom, or any cider cultivars are maybe in bloom in Northern VA, fire blight infection reported by NEWA EIP model on 8 May should have been controlled by streptomycin application in mix with Regulaid or Li700 

1. First Fire Blight Symptoms on Flowers Visible in Winchester; 2. Cedar Apple Rust Galls Fully Developed and Basidiospores Infecting Unprotected Apple Trees

1. First Fire Blight Symptoms on Flowers Visible in Winchester; 2. Cedar Apple Rust Galls Fully Developed and Basidiospores Infecting Unprotected Apple Trees

1. On 29th April, first blossom blight symptoms were found by Bill Mackintosh (Figs 1, 2). Most likely these infections of flowers have established either on the 5th or 6th April or 16 or 17 April, with the latter being the more likely scenario as 

Major Apple Scab Infection with Rain Events 28 – 30 April, Along With Cedar-Apple Rust Infections

Major Apple Scab Infection with Rain Events 28 – 30 April, Along With Cedar-Apple Rust Infections

Apples are at Petal Fall or beyond on early cultivars at in Winchester. From 28 – 30 April 2023, we are expecting multiple rain events followed by the slow drying conditions as per the NWS forecast visible at this moment. This is predicted to lead 

1. Fire Blight Infection Predicted on 22 April for Any Apple Orchards Still in Bloom; 2. Scab and Rust a Continuing Risk, Apply Fungicides Before Rains 21-22 April

1. Fire Blight Infection Predicted on 22 April for Any Apple Orchards Still in Bloom; 2. Scab and Rust a Continuing Risk, Apply Fungicides Before Rains 21-22 April

(1) If any commercial apple cultivars for fresh fruit production, young non-bearing orchards, or cider cultivars are still in bloom (young flowers opening), they will need protection before 22 April for fire blight infection predicted on that day with oncoming rain events 21-22 April. Before 

Major Apple Scab and Juniper Rust Infections Predicted 14-17 April in Whole Virginia

Major Apple Scab and Juniper Rust Infections Predicted 14-17 April in Whole Virginia

Apples are in bloom in Winchester and from 14– 17 April 2023, and besides fire blight threat I addressed in my previous blog post from today, we are expecting multiple rain events as per the NWS forecast. These many rain events will allow longer leaf 

Streptomycin Application Needed Today to Protect Against Fire Blight Infections 14-16 April in Whole Virginia, Add Fungicides to Your Tank

Streptomycin Application Needed Today to Protect Against Fire Blight Infections 14-16 April in Whole Virginia, Add Fungicides to Your Tank

Severe fire blight infections are imminent 14-16 April in Whole Virginia. Apply protective sprays today for any pome fruit in bloom, even if you have less then 5% flowers left on cultivars that are in petal fall. Below are mix options to use, but preventive 

14-16 April 2023 Rains: (I) Possible Fire Blight Infection; (II) Juniper Rusts Active in Central but Not in Northern VA, (III) Scab Infection Possible if Leaf Wetting is Long

14-16 April 2023 Rains: (I) Possible Fire Blight Infection; (II) Juniper Rusts Active in Central but Not in Northern VA, (III) Scab Infection Possible if Leaf Wetting is Long

We are in bloom in Northern VA. Based on the weather forecast as it stands now, if showers predicted in NWS with a 17-53% chance to occur on Saturday 15th or Sunday 16th April they will lead to infection by fire blight. The only exception 

Fire Blight Warning for Central Virginia: Severe Thunderstorms With Hail & Gusts Possible 6 April (Rustburg VA)

Fire Blight Warning for Central Virginia: Severe Thunderstorms With Hail & Gusts Possible 6 April (Rustburg VA)

TO ALL SOUTH CENTRAL VA POME FRUIT GROWING AREAS: There is a significant risk that today’s thunderstorm(s) will bring hail and 60 mph gusts at locations listed below. If in your or in neighboring orchard there was a recent history of fire blight be ready 

1. Severe Scab Infection Did Occur 31 March to 1 April in and Central VA (Tyro, Rustburg) and Southern VA; 2. here is Still time to Apply Kick-back Fungicides

1. Severe Scab Infection Did Occur 31 March to 1 April in and Central VA (Tyro, Rustburg) and Southern VA; 2. here is Still time to Apply Kick-back Fungicides

The apple scab infection predicted 31 March to 1 April was actually severe in Rustburg and Tyro, and we assume in near by locations as well as in whole south Virginia (e.g. in Bristol and others). The weather forecast did change from the time we 

1. First Major Fire Blight Infection Possible 5th and 6th April – If Current Weather Forecast Becomes Reality (EIP 115-148)

1. First Major Fire Blight Infection Possible 5th and 6th April – If Current Weather Forecast Becomes Reality (EIP 115-148)

The below outputs from the NEWA EIP model using NWS forecast show that we are expecting a series wetting events on 5th and 6th April, which will lead to fire blight infection on pome fruit in bloom, if the current weather forecast becomes reality on