Field Update – 6/29/20

Coastal

Rob Last reports, “In our area crops are generally looking good with watermelons and cantaloupes coming to harvest.  From a pest perspective, we are finding some early pickleworm and melon worm damage occurring. In addition, cucumber beetles and squash bugs remain active. Cucurbit downy mildew is being found in the area and as such protectant fungicide applications remain viable options. If in doubt scout.”

Zack Snipes reports, “Last week was full of heavy rain and heat. It finally feels like June.  Crops are either going one of two ways right now:  they either look great or they are succumbing to disease. Tomatoes are picking great and I’ve seen some really nice watermelons finish up this week. Peppers are loving this heat but I have seen an uptick in bacterial leaf spot (BLS) in the crop. Keep up with spray programs (copper and Manzate) for BLS in pepper. Tomatoes are also starting to look rough with all the heat and rain. If your tomato crop dies, please identify the culprit so we can better manage it next year. Soilborne diseases such as bacterial wilt and southern blight will not go away next year. I will be more than happy to work with folks on crop planning, cover crops, and rotation on their farms so we can avoid crop failures.

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A quick cut of the stem of a wilting plant and a dip into water can help to positively identify Bacterial Wilt in tomato. The presence of the pathogen will yield a clear to white ooze coming from the plant after a few minutes in the water. Photo from Zack Snipes.

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Bacterial Leaf Spot is spreading in pepper due to the heavy rains and increased heat. Photo from Zack Snipes.

Midlands

Justin Ballew reports, “We finally got some widespread rain mid-week and it has rained in places most days since. Some areas received enough rain to cause temporary flooding in lower-lying fields. Remember, according to produce safety guidelines, any produce that was flooded may not be harvested. We should expect diseases to worsen in the coming weeks. Powdery mildew in cucurbits and bacterial spot in tomatoes has certainly increased in the past week. Crops are still developing very rapidly and we are picking lots of squash, zucchini, cucumbers, tomatoes, eggplant, sweetcorn, greens, beans, etc.”

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This field of cucumbers was temporarily flooded by the heavy rain last week. Photo from Justin Ballew

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A crew picking squash in Lexington. Squash and zucchini are growing like wildfire in the midlands. Photo from Justin Ballew.

Pee Dee

Tony Melton reports, “Raining almost every day some storms causing downed trees.   Root rot bad applying a lot of potassium phosphide. A few strawberry growers still picking around rains. Downy mildew bad but Ranman and Orondis are doing a good job of control. Peas are maturing and will not be too long until harvest. We need to hurry to get the second crop planted on the same land. Still planting sweet potatoes. Okra and tomatoes just started to bare. Southern stem blight is bad and we’re spraying Fontelis. Some first crop butterbeans are being harvested.”

Field Update – 5/4/20

Coastal

Zack Snipes reports, “We have had a very wet spring with some places receiving over 13 inches of rain this month.  Crops look surprisingly good considering the excess rain and cooler nights.  I have seen an increase in worm activity on brassicas, particularly the cabbage looper.  With all the rain, I have seen some hot spots of bacterial spot in tomato.  If you scout from your truck or tractor, you will not find bacterial spot until much later in the growing season.  The disease starts on the bottom leaves of your tomatoes and works its way up throughout the season.  Preventative products such as copper, mancozeb, and plant activator products are the only control measures we have. Get out and scout and look very closely, as the disease is very difficult to see in the beginning stages.”

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Cabbage looper on a cabbage leaf. Photo from Zack Snipes.

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Bacterial spot starts on the bottom leaves and works its way up the plant throughout the season. Photo from Zack Snipes.

Midlands

Justin Ballew reports, “The weather was really nice this past week. We got about an inch of rain early Thursday morning and it has been breezy since, so all the water dried up fast.  The weather conditions have been perfect for grey mold in strawberries and it is showing up in areas where folks are falling behind in sanitation. It looks like there are more blooms on the plants this week, but with temperatures in the 80’s for a few days, that may slow down some.  Thrips are still an issue in places and treatments are going out, so keep scouting. If you need to make an application for thrips, do it early in the morning or late in the day to avoid spraying foraging pollinators. Keep looking for spider mites as well.”

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Rotting berries covered in Botrytis spores can go unnoticed in between plants.  Every time the wind blows, spores from these berries will be dispersed to other areas of the field. Photo from Justin Ballew.

Sarah Scott reports, “Peaches are progressing nicely in the Ridge area. Growers started harvesting early varieties. Some issues of bacterial canker are still becoming more noticeable in later varieties. The first sprays for scale crawlers have been applied and growers are continuing weed and orchard management sprays. Still picking strawberries. Crops for summer harvest are being planted still such as tomatoes and cucurbits. We’ve had some nice rainfall over the past week to keep soil moisture up but we have had high winds that have caused some limb breakage in orchards and stress on young vegetable transplants in the field.”

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Russetting on peach, possibly from earlier thrips damage. Photo from Sarah Scott.

Pee Dee

Tony Melton reports, “Winds are awful and damaging crops (sandblasting, wringing off plants, leaving spots on leaves and stems, causing wounds where disease like damping off can start and enter plants), stunting plants, and causing early flowering in tomatoes and peppers.  Insects are awful, including grasshopper, thrips, diamondback moth, yellow-margined beetle, and false cinch bugs.  Rains and irrigation to keep down sand blowing are causing leaching of nitrogen. In combination with decreased plant growth due to wind, we are adding extra nitrogen to get the plant size needed to get yields.  Hopefully, we can keep the processing tomatoes and peppers in the growth stage a little longer before the fruiting stage really kicks-in and further reduces plant growth.”

Upstate

Kerrie Roach reports, “While some have been hesitant, many Upstate Farmers Markets opened for the season this past weekend. Utilizing revised set-ups, handwashing stations, and promoting social distancing people still came out to support growers. Strawberries in Pickens and Anderson Counties are producing well and growers are selling out quickly. Weather conditions have been great for growing the last few weeks, and many of our market growers will be starting to move into the production stage over the next few weeks.”