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Central and South VA in Apple Bloom – Look at MaryBlyt’s EIP Value in NEWA’s Fire Blight Model for Fire Blight Spray Considerations

Central and South VA in Apple Bloom – Look at MaryBlyt’s EIP Value in NEWA’s Fire Blight Model for Fire Blight Spray Considerations

(I) FIRE BLIGHT: Apple bloom started on early cultivars on 1st April (Tyro) or 4th April (Charlottesville) or 6th April (Fincastle) and it varies from location and your orchard elevation. We are at very early bloom in ‘Pink Lady’ in Winchester (less then 1 %). 

Major Scab and Juniper Rust Infections Predicted from 6 to 9 April in Winchester Area

Major Scab and Juniper Rust Infections Predicted from 6 to 9 April in Winchester Area

Apples are at Tight Cluster or somewhat beyond on early cultivars at in Winchester. From 6 – 9 April 2022, we are expecting multiple rain events followed by the slow drying conditions as per the NWS forecast with the warmer periods peaking up to 64F 

(I) 31 March Rain Favors Severe Rust Infection But Likely Not Scab; (II) High Pressure Infection of Blossom Brown Rot on Stone Fruit

(I) 31 March Rain Favors Severe Rust Infection But Likely Not Scab; (II) High Pressure Infection of Blossom Brown Rot on Stone Fruit

(I) Apples. If you are not at pink bud growth stage on apple trees (Northern VA) the rains on 31 March are likely not to cause scab infection due to low relative air humidity and short periods of leaf wetness after the rain. This is 

Listen to Orchard Outlook Podcast: Springing into Scab Season – Part 2, Guest Dr. Srdjan Acimovic

Listen to Orchard Outlook Podcast: Springing into Scab Season – Part 2, Guest Dr. Srdjan Acimovic

I invite you to please listen to the Orchard Outlook Podcast (2022): E4 S3. Part 2 Springing into Scab Season: Guest Dr. Srdjan Acimovic: https://anchor.fm/orchard-outlook/episodes/E4-S3–Part-2-Springing-into-Scab-Season-Guest-Dr–Srdjan-Acimovic-e1fta7g

Listen to Orchard Outlook Podcast: Springing into Scab Season Part 1, Guest Dr. Srdjan Acimovic

Listen to Orchard Outlook Podcast: Springing into Scab Season Part 1, Guest Dr. Srdjan Acimovic

I invite you to please listen to the Orchard Outlook Podcast (2022): E3 S3. Part 1 Springing into Scab Season: Guest Dr. Srdjan Acimovic: https://anchor.fm/orchard-outlook/episodes/E3-S3–Part-1-Springing-into-Scab-Season-Guest-Dr–Srdjan-Acimovic-e1fta1k

Major Apple Scab Infection With Rains Predicted 23rd and 24th March In Virginia

Major Apple Scab Infection With Rains Predicted 23rd and 24th March In Virginia

A major scab infection is predicted for the rains predicted in forecast 23 to 24 March spanning from Winchester to Tyro to Rustburg, VA and all nearby locations. My recommendation would be to apply anilinopyrimidine (AP) fungicide Vangard (3 oz/A), or Scala (5 fl oz/A), 

Scab Infection Prediction for 19 March: Weak to Medium in North VA; Weak in Central VA; High in South-Central VA

Scab Infection Prediction for 19 March: Weak to Medium in North VA; Weak in Central VA; High in South-Central VA

Today, 18 March we are at green tip (GT) on early apple cultivars in Winchester VA. GT was reached 7 March in Rustburg VA, on 14 March in Tyro VA. GT was likely even earlier, anytime from 25 to 28 Feb in Ararat VA. GT 

Starting Stone Fruit Spray Program 2022 and Main Considerations

Starting Stone Fruit Spray Program 2022 and Main Considerations

1. One of the main drivers of your stone fruit spray program is brown rot. Even though I hear blossom blight stage of brown rot has never been that dominant of a problem in Virginia, there is always a risk from it if spring is 

Jump-Starting the Apple Scab Management in 2022 – General Strategy and Other Diseases

Jump-Starting the Apple Scab Management in 2022 – General Strategy and Other Diseases

1. APPLE SCAB. Apple fruit buds on early cultivars in Winchester are at less than 1% Green Tip (Gala, Arlet) and most other apple cultivars are dormant or with some silver tip (ST). Apple scab and cedar-apple rust were visible in some commercial orchards in 

1. Still Time to Reduce Inoculum From Scab & Apple Blotch; 2. Prep for Applying Delayed Dormant Copper in Apple/Pear and Dormant Ziram/Copper in Peach

1. Still Time to Reduce Inoculum From Scab & Apple Blotch; 2. Prep for Applying Delayed Dormant Copper in Apple/Pear and Dormant Ziram/Copper in Peach

1. Apple Scab and Marssonina Leaf Blotch were visible in the Shenandoah Valley apple orchards last year. As the fungi that cause these diseases overwinter in the dead leaf litter on the orchard floor, you can increase the future efficacy of your spring fungicides by