Archives for May 2013

Vegetable Briefs 5-24-13

  • Cucurbit downy mildew was reported on cucumber as far north as Southern Georgia this past week.
  • Crown rot and leather rot (fruit rot) caused by Phytophthora spp. were found on strawberry this past week.
  • Bacterial problems in strawberry, parsley, and lettuce were reported this past week. With the rain and windy weather predicted over the next few days conditions will be ideal for the bacterial diseases.
  • No late blight has been reported in the region to date.

Vegetable Disease Update 5-24-13

  • Cucumber/Pickles: Angular leaf spot
  • Lettuce: Bacterial leaf blight; Bottom Rot
  • Tomato: Bacterial spot and speck
  • Strawberry: Leather rot; Angular leaf spot

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Vegetable Diseases of the Week 5-24-13

Leather rot of immature strawberry fruit

Bacterial leaf blight of romaine lettuce

Seeing Red, Feeling Blue?

Red thread has been festering in turfgrass for some weeks now, but really blew up over the last few days. As long as there is plenty of moisture – light rain, heavy fogs, dew – and optimal temperatures (60ºF to- 75ºF) – the fungus that causes red thread, Laetisaria fuciformis, will tear up susceptible grasses.

Pseudoclerotia (red threads) of Isaria fusiformis are clearly evident on red thread infected fine fescue.

Pseudosclerotia (red threads) of Isaria fuciformis are clearly evident on red thread infected fine fescue. Photo: Sabrina Tirpak, Rutgers PDL

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Blister in the Sun

Leaf blister on maple? You say no way, leaf blister only gets on oak… A foliar disease that looks very much like anthracnose has appeared on area red maples in the last few days.

Maple leaf blister

Maple leaf blister, caused by the fungus Taphrina carveri. Photo: Sabrina Tirpak, Rutgers PDL

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Blueberry IPM for 5-22-13

Adult plum curculio

Adult plum curculio with
crescent-shaped scar on fruit caused at oviposition

  • Plum Curculio
  • Aphids
  • Thrips
  • Leafrollers and Other Leps
  • Cranberry Fruitworm
  • First Post-Pollination Insecticide Options

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