NJ peach orchards demand supplemental irrigation when drought weather patterns persist. Peaches gain up to 70% of their final volume during the last 30 days on the tree, so sizing fruit to their full potential requires supplemental irrigation. July and August are critical months for fruit sizing for most varieties. Inadequate irrigation during critical stages of fruit development results in smaller fruits and irreversible size/marketing losses. Irrigating closer to harvest will not increase fruit size. [Read more…]
Fruit Crops Edition
Seasonal updates on diseases, insects, weeds impacting tree fruit and small fruit (blueberry, cranberry, and wine grape). Fruit Pest Alerts are also available via this category feed.
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July 8, 2016 Cesar Rodriguez-Saona
Sparganothis Fruitworm Degree-Day Update: as of July 6, 2016
As of July 6, Sparganothis has accumulated 1,175 DD. Based on the DD model, Sparganothis has passed peak flight, and is laying eggs. Reminder that a single insecticide application, i.e., post-bloom application with Delegate, Altacor, Diazinon, or Intrepid, aimed at Sparganothis larvae will likely have the greatest effect if it is timed for peak egg-hatch/larval-emergence, which is approximately 1,400 DD and should coincide with early next week. I will keep you updated on these predictions as the season progresses.
Life history benchmarks for Sparganothis fruitworm and associated degree-day estimates (credit: Elissa Chasen and Shawn Steffan, USDA-ARS and UW Entomology).
July 7, 2016 Cesar Rodriguez-Saona
Sparganothis Fruitworm Degree-Day Update: as of July 6, 2016
As of July 6, Sparganothis has accumulated 1,175 DD. Based on the DD model, Sparganothis has passed peak flight, and is laying eggs. Reminder that a single insecticide application, i.e., post-bloom application with Delegate, Altacor, Diazinon, or Intrepid, aimed at Sparganothis larvae will likely have the greatest effect if it is timed for peak egg-hatch/larval-emergence, which is approximately 1,400 DD and should coincide with early next week. I will keep you updated on these predictions as the season progresses.
Life history benchmarks for Sparganothis fruitworm and associated degree-day estimates (credit: Elissa Chasen and Shawn Steffan, USDA-ARS and UW Entomology).
Fruit IPM for 7-5-2016
Time to start applications for second generation codling moth in apples. Protect ripening peaches from brown rot. Spotted wing drosophila still a problem. View the full update for 7-5-2016.
June 30, 2016 Dean Polk, Dave Schmitt, Atanas Atanassov, Carrie Mansue
Fruit IPM for 6-29-2016
Still time to treat for grape berry moth in grapes. Codling moth between generations with second flight about to start in apples. First spotted wing drosophila larvae found in untreated blueberry fruit. View the full update for 6-29-2016.
June 28, 2016 Cesar Rodriguez-Saona
Sparganothis Fruitworm Degree-Day Update: as of June 27, 2016
As of June 27, Sparganothis has accumulated 968 DD. Based on the DD model, Sparganothis has reached peak flight, and should have started egg laying. Reminder that a single insecticide application, i.e., post-bloom application with Delegate, Altacor, Diazinon, or Intrepid, aimed at Sparganothis larvae will likely have the greatest effect if it is timed for peak egg-hatch/larval-emergence, which is approximately 1,400 DD. I will keep you updated on these predictions as the season progresses.
