Rutgers University | New Jersey Agricultural Experiment Station | Pesticide User Responsibility

May 10, 2018

Tree Fruit IPM Update – Codling Moth

Codling Moth (CM): The first codling moth flight has started. A biofix was set for CM on May 5th in southern counties. *NEW* A biofix for northern counties was set on May 9. Timings are updated as follows.

 

Codling Moth Degree Day Timing
Application and Insecticide Type
County Area Biofix Rimon:

75-100DD + 14-17 days later

 

 Intrepid

150 + 450 DD

Diamides – Altacor, Voliam mixes: (150-200 DD) + 14-21 days later

 Cyd-X, Carpovirusine, Madex

Apply starting at 250 DD. Follow label Instructions for repeated applications

 Standard Insecticides –  Delegate, Avaunt, OP’s, carbamates, pyrethroids

250 DD + 550 DD

 
DD 75 100 150 450 250 250 550
Southern May 5 5/10 5/11 5/13 Too far off 5/19 5/19 Too far off
Northern May 9 5/15 5/17 5/21 Too far off 5/29 5/29 Too far off

 

Filed Under: Uncategorized
May 9, 2018

Tree Fruit IPM Report for May 9, 2018

Peach:

Oriental Fruit Moth: First generation timings are updated below:

OFM 1st Generation Timing
Insecticide Type
County/Region Degree Days by  5/9 base 45 Conventional

170-200, 350-375

 Diamide

100-150, 300-350
Gloucester – Southern 230 1st – past

2nd – 5/13-14

 1st – past

2nd – 5/11-13
Hunterdon – Northern 186 1st – 5/9-10

2nd – 5/19-20

 1st – past

2nd 5/17-5/19

[Read more…]

Filed Under: Tree Fruit
May 1, 2018

Tree Fruit IPM Update – Oriental Fruit Moth; Fire Blight

Oriental Fruit Moth (OFM):

A biofix for OFM was set on 4/27 for southern New Jersey counties. The first insecticides for the first generation should  be applied between 170 and 200 DD after the biofix. Based on forecast at NEWA applications should be made between May 5 and May 6.

Fire Blight:

Predictions for Fire blight based on the Cougar Blight model at NEWA indicate extreme risk for fire blight starting May 3 and continuing through the weekend in southern counties. Record the first bloom date and check the model for your local conditions. Therefore Antibiotics such as Streptomycin, Mycoshield , or Fireline should be applied before any predicted wetting. Even a heavy dew can result in infection so watch the weather carefully. These antibiotics have short residuals and are thought to have some curative properties if applied within 24 hours after an infection has occurred. Reapplication will be necessary every few days if extended wetting is expected while extreme conditions last.

Filed Under: Tree Fruit
April 27, 2018

Tree Fruit IPM Report for April 27, 2018

Peach:

Brown Rot: Blossom infections from the brown rot fungus can occur whenever pistils are exposed and a favorable climate exists. Infections can occur during any wetting period when temperatures are between 41 and 86 ° F. However optimum conditions for infection occur with wetting and temperatures in the mid 70’s. During long wetting periods (several days or more) blossoms can be infected regardless of temperature. Generally infections that occur when conditions are sub optimal are less severe. Blossoms and fruitlets will remain susceptible until the pistil dessicates (sometime between petal fall and shuck split). [Read more…]

Filed Under: Blueberry, Tree Fruit, Wine Grape Tagged With: , , ,
April 11, 2018

Tree Fruit IPM Report for April 11, 2018

Peach:

Brown Rot: Blossom infections from the brown rot fungus can occur whenever pistils are exposed and a favorable climate exists. Infections can occur during any wetting period when temperatures are between 41 and 86 °F. However, optimum conditions for infection occur with wetting and temperatures in the mid 70’s. During long wetting periods (several days or more) blossoms can be infected regardless of temperature. Generally infections that occur when conditions are sub optimal are less severe. Blossoms and fruitlets will remain susceptible until the pistil dessicates (sometime between petal fall and shuck split). [Read more…]

Filed Under: Tree Fruit Tagged With: ,
March 28, 2018

Early Season Tree Fruit Pest Control in 2018

  • Dormant season oil sprays
  • Dormant season copper sprays
  • Dormant season urea sprays

[Read more…]

Filed Under: Tree Fruit