Author: acimovic

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 

1. Possible Apple Scab Infection Predicted for Rains 31 March – 1 April; 2. Fire Blight Low to No Risk for Infections; 3. Do You See Orange Juniper Rust Galls on Cedars?

1. Possible Apple Scab Infection Predicted for Rains 31 March – 1 April; 2. Fire Blight Low to No Risk for Infections; 3. Do You See Orange Juniper Rust Galls on Cedars?

1. Apple scab could infect with the rains of 31 March into 1 April (Figures 1-4) but will it? Based on National Weather Service forecast for the next 48 h to 72 h, it appears that after these rain events leaf wetting will not continue, 

1. Plan for Stone Fruit Protection Against Brown Rot Ahead; 2. Rusty Spot of Peach; 3. Bacterial Spot of Peach

1. Plan for Stone Fruit Protection Against Brown Rot Ahead; 2. Rusty Spot of Peach; 3. Bacterial Spot of Peach

1. The key driver of your stone fruit spray program is brown rot. Fruit protection with alternating fungicides with different modes of action is essential to avoid fungicide resistance and have good quality fruit at harvest. The key period when fruit are susceptible to diseases