Attached is this week’s VPDA. Additional information: vpdamay102012-doc
Category Archives: Commodity
Cucurbit Downy Mildew found in NC
Please review the attachment regarding the discovery of downy mildew on cucumber in North Carolina. Thanks Steve Additional information: cdownymildewupdate050412-doc
Virginia Potato Disease Advisory – Late Blight found in NC on potato
See the attachment for this week’s Virginia Potato Disease Advisory. Thanks
Steve Additional information: vpdamay32012-doc
Late Blight information
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
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 Tech Tidewater AREC hosting row crops tour on morning of June 5, 2012
The Virginia Tech Tidewater Agricultural Research and Extension Center will hold an early-summer field crops tour during the morning of Tuesday, June 5, 2012. The tour will be held at the Center’s Research Farm (1045 Hare Road, Suffolk, VA). Specialists (Drs. Maria Balota, Hunter Frame, Ames Herbert, David Holshouser, Pat Phipps, and Wade Thomason) will display field research in progress and will present information for the 2012 crop season. Topics will include nutrient management, pest management, and crop management for cotton, peanut, soybean, wheat, corn, and sorghum. Robert Christian will conclude the tour with a pesticide safety review. We have applied to offer Certified Crop Adviser Continuing Education Credits. Commercial Pesticide Applicator recertification credits (categories 1-A, 1-C, and 10), and Registered Technician (category 60) will be available for participants. All interested in commercial production of field crops are invited to attend. There is no preregistration and no fee for attending this tour. Arrival is at 8:30 am with the program starting promptly at 9:00 am and running through lunch (courtesy of Berry Lewis with Bayer CropScience) at 12:30 pm. More information is available through local Virginia Cooperative Extension offices or by contacting the Tidewater Agricultural Research and Extension Center main office at 757-657-6450. If you are a person with a disability and desire any assistive devices, services or other accommodations to participate in this activity, please contact the Tidewater Agricultural Research and Extension Center at 757-657-6450 (TDD number is 800-828-1120) during business hours of 8 am and 4:30 pm to discuss accommodations five days prior to the event.
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
Date/Time for Virginia Tech’s Eastern Shore AREC Summer Field Day Set
The annual summer Eastern Shore AREC will be held on July 18th, 2012 at the research station in Painter, VA. Registration will begin at 8:00AM with plot/research tours beginning at 9:00AM. Lunch will follow the tour. We hope to see you there! A more detailed program will be developed at a later date.
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