As a follow up to our previous email on late blight being found in our region, I wanted to share a recent VCE publication on this potentially devastating disease of potato and tomato. Additional information: anr-6-pdf-pdf
Category Archives: Fruits and Vegetables
Late Blight found on potato in Camden, NC
Late blight was found on a commercial potato field in Camden Co., NC this week. Confirmation was made today by Dr. Pat Phipps at the TAREC based upon samples from this field. This outbreak is close enough to be considered a threat to the SE Virginia and the Eastern Shore of Virginia. We will have more information in our potato report tomorrow, but, based upon this news growers should consider treating their potato and tomato fields with a preventative fungicide such as chlorothalonil. If you have any questions feel free to contact me.
Steve
Virginia Potato Disease Advisory – April 26
Please find attached this week’s VPDA Additional information: vpdaapril262012-doc
Virginia Potato Disease Advisory – April 19
Attached is the first VA Potato Disease Advisory for 2012. Additional information: vpdaapril192012-doc
Controlling brown marmorated stink bugs in sweet corn
I was contacted recently by a VCE Agent in Frederick Co. Mark Sutphin about my recommendations for stink bug bug control in sweet corn. Frederick Co., VA is one of the counties that has very high densities of the invasive brown marmorated stink bug. After sending him my reply, I thought that others in Virginia may also benefit from this information. So here it is below:
Fortunately for sweet corn producers, unlike tree fruit growers, BMSB should not cause any drastic changes in chemical control strategies unless the grower is relying primarily on transgenic Bt sweet corn for worm control.
Bt will not control stink bugs. Most of the insecticides that growers are already spraying on sweet corn should control BMSB. These include the following below:
beta-cyfluthrin – 1.6-2.8 fl oz/A Baythroid XL
bifenthrin – 2.1-6.4 fl oz/A Bifenture (or Brigade, Sniper, or OLF) Not labeled in coastal counties
chlorpyrifos 1-2 pts/A Lorsban 4E (or OLF)
chlorpyrifos + gamma-cyhalothrin – 13-26 fl oz/A Cobalt
cyfluthrin – 1.6-2.8 fl oz/A Tombstone (or OLF)
gamma–cyhalothrin – 2.56-3.84 fl oz/A Proaxis
lambda-cyhalothrin – 1.28-1.92 fl oz/A Warrior II or 2.56-3.84 fl oz/A Lambda-Cy (LambdaT, Silencer, or OLF)
lambda-cyhalothrin + chlorantraniliprole – 6-9 fl oz/A Voliam xpress
methomyl – 0.75-1.5 pts Lannate LV
permethrin – 4-8 fl oz/A Permethrin 3.2EC (Perm-UP, Pounce 3.2EC or OLF)
zeta-cypermethrin – 2.24-4 fl oz/A Mustang MAX (or OLF)
zeta-cypermethrin + bifenthrin-Not labeled in coastal counties 4.5-11.2 fl oz/A Hero EW
Click More News to download a copy of the insecticide performance report based on our research on vegetable crops in Virginia in 2011.
In the western portions of Virginia, probably applications twice per week during silking and until harvest should control them even under heavy pest pressure. In eastern counties, insecticide applications at least 3 times per week are probably needed to control both corn earworm and the BMSB.
Best regards,
Tom
Additional information: summary-of-insecticide-performance-on-bmsb-nov2011-docx
Luna Tranquility now Labeled for use in Virginia on Potato
Luna Tranquility is a new fungicide from Bayer CropScience and has just received approval for use in Virginia. On the vegetable front, Luna Experience is only labeled on potato currently for control of early blight primarily. Luna Tranquility is also labeled for use on apples. Please let us know if you have any specific questions. The label can be found at the attached link. Additional information: lunatran-pdf
Luna Experience labeled for use on Watermelon in Virginia
Luna Experience is a new fungicide from Bayer CropScience and has just received approval for use in Virginia. On the vegetable front, Luna Experience is only labeled on watermelon currently for control of gummy stem blight, powdery mildew and others. Luna Experience is also labeled for use on grapes and select tree nut crops. Please let us know if you have any specific questions. The label can be found at the attached link. Additional information: lunaexperience-pdf
2011 Vegetable arthropod Pest Management Research Summary
The 2011 Vegetable Entomology Research Summary is available online at the following link: http://pubs.ext.vt.edu/ENTO/ENTO-1/ENTO-1.html.
Highlighted are Dr. Tom Kuhar’s research trials conducted in 2011 on key vegetable crops and insect pests, including a number of field experiments and laboratory assays on the brown marmorated stink bug.
Vegetables added to the Belt insecticide label
Bayer CropScience recently announced that vegetables have been added to the Belt insecticide label. The insecticide product Synapse, which also contains the potent-lepidopteran active ingredient flubendiamide, will be phased out. Belt will be the product for both cropping systems. Existing supplies of Synapse should be sold, and growers can continue to use that product. Bayer Cropscience is also offering price reductions for the product. Click more to download the new Belt label. Additional information: newbeltlabel-withvegetablesadded-pdf
Supplemental label for Zeal miticide on cukes and fruiting veggies
Control of two-spotted spider mite can be very difficult once mite outbreaks are flared. Portal, Oberon, Acramite, and Agrimek are all efficacious materials to control mite outbreaks on vegetables. Zeal is also effective, and has just recently gotten a Supplemental Label for additional crops including: cucumbers, fruiting vegetables such as tomatoes and peppers, and other small fruit crops. Rotation of miticides is important for resistance management. Zeal is another effective miticide with a novel mode of action to include in this rotation. Click more for the Supplemental Label. Additional information: zealsupplementallabel-cukes-fruitingveggies-pdf