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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Root-feeding Pests of Cranberries

If your beds have damage caused by root-feeding insects, you should consider treatment with Imidacloprid (e.g. Admire Pro, Alias 4F, Alias 2F) immediately after bees are removed.  Occurrence of root-feeding insects will manifest by the presence of dead patches.  Pull dead vines and search through the root zone and soil for grubs and worms.  Admire Pro (imidacloprid) is labeled for the control of cranberry rootworm, white grubs (Phyllophaga spp.), and other scarabs in cranberries. [Read more…]

Beating the Bugs in the Bogs – Blunt-nosed Leafhopper

Blunt-nosed leafhopper is an important concern for cranberry, not because the insect causes that much feeding damage, but because it can transmit cranberry false blossom disease. False blossom is characterized by a malformation of the flowers. The flower pedicels become erect and there is no production of fruit, with devastating effects for cranberry yield. Blunt-nosed leafhopper nymphs start to occur in the bogs by the end of May, and adults reach their peak numbers in July. Relatively little is known about the way the insects transmit false blossom disease, and at the Cranberry & Blueberry Research Center, we soon hope to change that. [Read more…]

Cluster Thinning Effects on Cabernet Sauvignon and C. Franc Yield and Wine Quality

Click to View or Download the Report

Click Image to View | Download Report

Cabernet Sauvignon and Cabernet Franc can produce excellent wine grapes and wine in New Jersey, but the effect of cluster thinning on optimal yields has not been established. This study suggests that high quality grapes and wines can be made from these varieties under various climatic conditions and without the necessity of economically unsustainably low yields that can result from cluster thinning.

Grant support: USDA NESARE and from Coia Vineyards, the Outer Coastal Plain Vineyard Association, and Rutgers NJAES.

Fruit IPM Report July 10, 2014

Syrphid Fly Larvae Attack Woolly Apple Aphids Photo: Good Fruit Grower

Syrphid Fly Larvae Attack Woolly Apple Aphids
Photo: Good Fruit Grower

This week in Fruit IPM

  • Peach
  • Apple
  • Grape
  • Blueberry
  • Tree Fruit Trap Counts

 

New Blueberry Fruit IPM Program Associate Amy Raudenbush
Welcome Amy Raudenbush! Amy is now the Fruit IPM Program Associate working in blueberries. A native of New Jersey, Amy joined the Fruit IPM Program this past Tuesday, July 8. After getting a Bachelors degree from Rutgers and working in the Entomology Department, she received an MS in Entomology from Kansas State University, and worked as a research associate in IPM programming.

Amy is now visiting with growers and assessing SWD populations, along with other pests. Amy is stationed in the Rutgers Cooperative Extension Offices of Atlantic County, and will be able to be reached at (609)625-0056 or by her cell number at (609)313-2406.

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[Read more…]

Post-bloom Insect Pest Control Recommendations

Sparganothis fruitworm adult (photo by Elvira de Lange)

Sparganothis fruitworm adult (photo by Elvira de Lange)

As we approach the end of bloom, growers should consider the need for any post-bloom applications.  The main pest targets for these applications are Sparganothis fruitworm and spotted fireworm.

Sparganothis fruitworm (SPARG) – If your farm has high pheromone trap counts, you should consider managing this pest as soon as bees are removed. The timing for this 1st post-pollination spray is at 2 weeks after peak pheromone trap catches, which usually coincides with the second week in July. [Read more…]

Farm Food Safety: Irrigation Water Sampling

Testing irrigation water for generic E. coli is something that every farm should do.  Timing and frequency of this testing varies depending on your water source.  Here is a cheat sheet: [Read more…]