Field Update – 10/7/19

Statewide

Dr. Tony Keinath reports, “Growers who have “slacked off” on fungicide applications during the dry spell should resume biweekly or weekly fungicide sprays in areas that are or have received rain. For most fungal diseases, the amount of rain determines how severe the disease becomes. The more rain, the more fungicide sprays are needed. Note that many fungicide labels now state that the product may only be applied once every 7 days; 5-day spray schedules are going away.

Coastal Region

Zack Snipes reports, “Another hot and dry week in the Lowcountry. Non irrigated crops are really starting to suffer.  Many farms are waiting on rain to plant fall crops.  We are beginning to prepare for strawberry season but dry conditions are making it hard to lay plastic. Festivals, corn mazes, pumpkins, and haunted trails are in full gear in the Lowcountry.”

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Sunflowers can add extra income to the farm during the summer and fall seasons. Photo from Zack Snipes.

Midlands

Justin Ballew reports, “Last week was hot, but temperatures finally dropped over the weekend. It finally feels like fall.  Dry weather remains, though.  A few areas got some light showers, but it didn’t amount to much.  Growers have laid their plastic for strawberries and planting is approaching quickly.  Caterpillars are still very active in brassica crops and we are seeing some whiteflies as well.  Keep scouting and stay on top of the insects.”

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Plastic laid for strawberries. Planting will start soon. Photo from Justin Ballew.

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Whiteflies are showing up on brassica crops in the midlands. Photo from Justin Ballew.

Sarah Scott reports, “We have had spotty rain throughout the Ridge but conditions are still very dry. Cooler night temperatures are bringing some relief. Field preparation for new peach tree plantings are underway including soil fumigation.  With the recent discovery of the root knot nematode, Meloidogyne floridensis, in fields in Edgefield County, growers can request a PCR test if nematode samples test positive for root knot nematodes.

Lalo Toledo reports, “Phytophthora blight on bell peppers has been found in Clarendon and Orangeburg County. Phytophthora blight on peppers is extremely damaging and can result in total loss of the crop prior to the first harvest. Proper fungicide applications and resistant cultivars can be used to suppress this disease. Sweet potatoes are being harvested, as well as eggplants. White-fly populations have been found in broccoli and mustard.

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Phytophthora blight on pepper. Photo from Lalo Toledo.

Some Pesticides Now Approved for Hemp Production in SC

Yesterday (6/27/19) Clemson’s Department of Pesticide Regulation (DPR) released a list of pesticides they are now allowing for use in hemp production.  A PDF including a letter from DPR and the list of approved products can be accessed here: Approved Hemp Pesticides.  Please read the letter from DPR before using any chemicals on the list.  Additionally, it is recommended that growers speak with their processors to ensure using these chemicals will not result in any unacceptable residues.

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Growers will now have some chemical options for treating insect and disease pests in hemp crops.

Previously, growers were only allowed 25(b) products, which the EPA deems “minimum risk products”. These are products that do not have EPA registration numbers (mostly plant extract oils).