Field Update – 7/22/19

Midlands

Justin Ballew reports, “It was another fairly hot week with scattered afternoon showers. We’re about finished with the spring cucurbit and brassica crops and growers are planting some fall brassicas now.  Peas, green onions, tomatoes, peppers and some eggplant are being picked now.  Still seeing some cutworm damage showing up in hemp.  They feed at night, so growers having trouble with cutworms may benefit from night time applications of Dipel or Grandevo directed at the base of the plant.

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Peas are being picked in the midlands. Photo from Justin Ballew

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Cutworm damage on hemp stem. Photo from Justin Ballew

Sarah Scott reports, “The fall crop of bell peppers are being planted. We are continuing to pick peaches and have started picking Asian pears. Field prep is underway for fall planting of new peach trees. Old orchards are pushed up and the trees burned when they are no longer productive, making way for new orchards for the coming seasons.

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Fall peppers are going in the ground in the Ridge Spring area. Photo from Sarah Scott.

Lalo Toledo reports, “Tomatoes have been suffering from many pest and diseases. Most prevalent Southern Blight (White Mold) and Bacterial wilt. Make sure to properly diagnose your pest and/or diseases. Improper identification has led to improper control.”

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Tomato plant wilting rapidly from bacterial wilt. Photo from Lalo Toledo

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White fungal growth from Southern blight on a tomato stem. Photo from Lalo Toledo

Pee Dee Region

Bruce McLean reports, “This last week’s hot weather has taken a bit of a toll on some crops in the Pee Dee Region. Volumes on cantaloupe, cucumber and peppers were off a bit due to heat related damage. But, cooler weather looks to be in the forecast for this upcoming week. Be on the look out for Downy Mildew in cucurbits. I found some in a field of cucumbers last week. Some fall crops have been planted. The remaining acreage will likely be planted after the temperature break.

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Peppers are slowing down from the heat in the Pee Dee. Photo from Bruce McLean

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Downy mildew symptoms on a cucumber leaf. Photo from Bruce McLean

Upstate

Kerrie Roach reports, “Many upstate apple growers are having to do some late thinning on orchards hit by hail from one of the many late afternoon summer storms. Picking early varieties like ‘Wolf River’ and some of the Golden Delicious sports. Peaches are in full swing as are all our major summer vegetable crops. As in other areas of the state we have seen many instances of southern stem blight on tomatoes.”

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Early apple varieties are being harvested in the upstate. Photo from Kerrie Roach

Field Update – 7/15/19

Coastal Region

Zack Snipes reports, “Most crops are finished here in the Lowcountry.  There are a few crops that are being harvested for the final time this week.  Fall watermelon and tomato are in the ground already.  I saw some interesting cucumber beetle larvae damage on watermelons this past week. This type of damage will result in loads of melons being rejected by buyers.  Crop rotation is a vital component to managing this pest.  If you have seen this type of damage, please reach out so we can develop a plan of attack for next season.  I attended the Edisto REC Watermelon Field Day this past week and learned about the future of robotics in agricultural production and had the opportunity to taste over 30 varieties of watermelons.

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Cucumber beetle larvae damage to watermelon rind. Photo from Zack Snipes

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Robotics demo at the Watermelon Field Day at Edisto REC, 7/11/19. Photo from Zack Snipes

Midlands

Justin Ballew reports, “We had some scattered rain over the last week.  Some folks are still needing some.  We’re winding down on the spring brassicas and cucurbits.  This is good because foliar diseases like anthracnose and powdery mildew are really increasing with the humidity.  We’re still picking tomatoes and have started picking peas.  Spider mites are picking up, so scout closely for those.  Hemp is growing well, though we’ve seen some seedling disease and cutworm damage in spots.”

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Anthracnose lesions on a cucumber leaf. Photo from Justin Ballew

Sarah Scott reports, “Hot and dry weather along the Ridge. Conditions have been favorable for increased spider mite and stink bug activity.

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Stippling from spider mite feeding damage on peach leaves. Photo from Sarah Scott

Upstate

Andy Rollins reports seeing some blackberry tips wilting from raspberry cane borers. “If you see this, they need to be cut off 6 inches below the 2 girdled lines you see below.  This material can be composted or you can just squish them.  Insecticide sprays can be helpful but only when applied before symptoms appear.  It is a type of beetle larvae that is feeding on the stem before becoming an adult.  Commercially, there would have to be a major infestation to warrant the extra labor.  Normally this won’t be present in a regularly sprayed crop.”

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Stem girdling from raspberry cane borer. Photo from Andy Rollins

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Raspberry cane borer larva inside of blackberry stem. Photo from Andy Rollins

Kerrie Roach reports Ginger Gold apples are being harvested in the upstate.

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Ginger Gold apples from the upstate. Photo from Kerrie Roach

Pee Dee

Bruce Mclean reports, “Well, it looks like another hot week is on tap for us this week. Squash, watermelons, cucumbers, cantaloupes, peas and peppers are coming off in good volumes.  Quality looks especially good on these crops.  Blueberries and sweet corn are finishing up.  Starting to see some disease in muscadines.  If you are seeing leaf spots in them, it may be time to evaluate and adjust your spray program. Also, starting to see early ripening of fruit.  Be on the look out for fruit rot.

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Muscadines ripening. Photo from Bruce McLean

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Black rot lesions on muscadine leaf. Photo from Bruce McLean

Tony Melton reports, “Cucumbers having hard time setting fruit in the heat – getting many nubbins (crooked fruit).  Parthenocarpic varieties seem to handle the heat better than regular pollinated varieties.   Processing tomato harvest is progressing quickly and about ½ complete.  Processing pea harvest will begin this week – thousands of acres ahead to harvest.  Processing hot pepper harvest has begun and will continue for a month.

Field Update – 7/8/19

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Coastal Region

Zack Snipes reports, “It’s hot in the Lowcountry! We are just about finished on all summer crops. Bell peppers and rabbiteye blueberries should finish up this week. We are still picking some okra and hot peppers. Keep an eye out for worms in the coming weeks. I am seeing some basil downy mildew on basil. I have seen lots of ant and cricket damage on recently planted hemp.”

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Basil downy mildew. Photo from Zack Snipes.

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Cricket chewing damage on hemp stem. Photo from Zack Snipes.

Midlands

Justin Ballew reports, “It’s been hot and humid.  Some lucky folks have gotten some isolated showers, but overall, we need rain badly.  The humidity is allowing powdery mildew to pick up on cucurbits and pickleworms are showing up heavy in some fields.  Hemp is doing well so far.  We are seeing some mite, caterpillar, and cutworm activity.”

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Powdery mildew on a squash leaf. Photo from Justin Ballew

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Pickleworm in the middle of a squash.  Photo from Justin Ballew

Sarah Scott reports, “The peach crop in the Ridge is looking good.  Varieties are getting ready a couple weeks early and there is an abundance of  fruit being picked.”

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Peaches are coming in early on the Ridge, but are looking good. Photo from Sarah Scott

Pee Dee Region

Bruce McLean reports, “The recent rain showers have really helped the area crops. Cantaloupe and watermelons are seeing some good volumes coming out of the field.  Mid season cucumbers are looking good as well.  A consistent volume of peas are being picked and looking great.  Sweet corn volumes are starting to fall off as the season is winding down.  Muscadines are starting to size pretty well, and are looking very good.”

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Cucumbers are looking good. Photo from Bruce McLean

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Muscadines are sizing up. Photo from Bruce McLean

Tony Melton reports, “Butterbean harvest will be in full swing this week and it seems this week and next maybe our total spring harvest.  Processing peas will begin harvest this week if rains hold off.  Processing peppers are being harvested and will continue for next 4 weeks.  Also, processing tomatoes are being harvested and will continue for 4 weeks.  Harvest of second planting of pickles for processing will begin this week.   Last of the collards for processing will be harvested this week.”

Upstate

Kerrie Roach reports, “In apple news, we are about 2 weeks from picking the early golden varieties and about 4 weeks out from Galas. Hail damage is wreaking havoc at many orchards, and we are hoping for some clear weather for a few weeks to finish out the prime growing season. Peaches have finally come in and are looking good right now. Later varieties of peaches  at many orchards in the upstate are seeing between a 70-80 percent crop loss.”

Field Update – 7/1/19

Coastal Region

Zack Snipes reports, “Everyone is busy in the Low country harvesting summer crops.  This should be a big week for us in the field and at local markets and roadside stands as July 4 approaches.  The tomato crop is either finished or finishing up this week.”

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A variety of tomatoes from the coast. Photo from Zack Snipes.

Midlands

Justin Ballew reports, “It’s getting hot here in the midlands and it’s getting dry too.  Harvest is still going strong on a number of crops.  We have a reduced blueberry crop because of the hot, dry weather back in May, but picking is going on now. Lots of hemp has been planted in the last two weeks and is growing well.”

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Hemp going in the ground in the midlands. Photo from Justin Ballew

Sarah Scott reports, “We are picking several summer varieties of peaches along the Ridge, many varieties coming in early. Freestone peaches are beginning to ripen and become available. A second population of Brown Marmorated Stink Bugs is near its peak based on high numbers found in traps across the Ridge. Be on the lookout for egg masses, generally in groups of 28 eggs. (picture) BMSB damage from earlier populations causes distortion as fruit ripens. Damage goes beyond skin into flesh.

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Brown marmorated stink bug (BMSB) eggs. Photos from Sarah Scott.

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BMSB damage within the peach flesh. Photo Sarah Scott

Pee Dee Region

Bruce McLean reports, “Harvest for many vegetable crops are rolling right along. Watermelons and cantaloupes are starting to see some volume.  Early season rabbiteye blueberries are starting to wrap up. Mid and late season rabbiteyes are looking good. Heat and dry weather is starting to have an impact on crops, even those with irrigation. Growers are adjusting irrigation schedules to compensate for the increased heat and the lack of rain.”

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Rabbiteye blueberries looking good. Photo from Bruce McLean

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Zucchini wilting in the heat. Photo from Bruce McLean

Tony Melton reports, “Downy Mildew is showing up in later planted cantaloupes, cucumbers, and squash.  First planting of cantaloupes and watermelons are winding down.  Processing peas are drying and will be terminated soon for harvest.  Butterbeans that reset pods after heat at the beginning of June will begin harvest this week.  Sweet potato planting is winding down many of the first planted are laid-by.  Pepper and eggplant harvest has begun.”

Field Update – 6/3/19

Statewide

Dr. Tony Keinath reports,”Powdery mildew was found on watermelon at the Coastal REC on May 30. Typical symptoms of powdery mildew on watermelon are distinct yellow spots, although the spots may be indistinct yellow blotches rather than round spots. The symptoms seen this week included more browning than is typical for the size of the spots, perhaps due to unusually hot weather.  To manage powdery mildew on watermelon and other cucurbits, click here. Powdery mildew-resistant cultivars of cucumber and cantaloupe are holding up well, but squashes with partial resistance to powdery mildew should be sprayed.”

Yellow spots include more browning than usual for powdery mildew. The hot weather probably contributed to this. Photo from Dr. Tony Keinath.

Coastal Region

Zack Snipes reports, “Another week without rain for most of the Lowcountry.  The irrigated crops that have gotten enough water and look great including tomato, watermelon, cantaloupe, cucumbers, and squash. We are at the beginning of tomato, melon, rabbiteye blueberry, and blackberry harvest.  Blueberry growers will want to look out for anthracnose fruit rot in harvested berries.  There is nothing that can be done this year but we can work on spray programs for next year.  The tomato crop looks great except for the usual bacterial wilt and southern blight.  I heard of a few hot spots of spider mites last week so scout regularly especially during this hot and dry period.”

Cantaloupe looking good in the Coastal region. Photo from Zack Snipes.

Anthracnose in blueberries. The photo on the right shows berries that were just picked. The berries on the left were picked 3 days prior to the photo being taken and stored at room temperature. You can see the orange spore masses on some of the berries. Photos from Zack Snipes.

Midlands

Justin Ballew reports,”Last week was another hot, dry week. It’s been 23 days now since we’ve had rain that amounted to anything more than a brief sprinkle. Irrigation systems are not getting much rest. Squash and zucchini yields have suffered some, most likely because bee activity decreases when it is extremely hot and dry. We have some blueberries that are suffering because the drip system is not able to keep up with the water demand. Other irrigated crops like sweet corn, tomatoes, peppers, and eggplant are looking fine. We need rain pretty badly, though.

Collards just outside of the reach of the end gun are wilting and the bottom leaves are drying out. Photo from Justin Ballew
Blueberries are showing signs of drought stress in the Midlands. Photo from Justin Ballew

Sarah Scott reports, “Things are busy and man has it been HOT! I’ve been speaking with Brett Blauuw, entomologist from UGA,  about what to expect when the temps dip back down to “normal” as far as the pest outlook is concerned and here are some notes from our conversation:

  • Scale insects tend to become inactive at temperatures greater than 90, but they will continue to develop at night when the temperatures dip back down. The activity should decrease compared to a ’normal’ spring where it’s in the 80s. We still have a couple of weeks before we see another peak abundance of scale crawlers.
  • Stink bugs don’t mind the heat much. The adults that emerged from overwintering are dying right now, so the numbers are declining but, they have laid eggs and the nymphs will be developing. In a couple of weeks we should expect another large number of BMSB adults. 
  • Plum curculio is also more abundant and active this year. Still catching adults down in Fort Valley, so that is another concern.
  • Thrips, unfortunately love hot, dry climates, so right now is the perfect weather for them. For organic producers, Entrust is an affective product.”
Squash bugs showing up on cucurbits in the Midlands. Photo from Sarah Scott.

Field Update – 5/28/19

Statewide

Dr. Tony Keinath reports, “Downy mildew has moved into south Georgia on cucumber and watermelon. Growers should have downy mildew fungicides on hand and be ready to spray cucumber, cantaloupe, and watermelon when rain starts in the lower half of the state. A preventative spray of mancozeb or chlorothalonil would be a good idea in the meantime. You can keep track of the spread of downy mildew here.

Despite the dry weather, anthracnose was found on watermelon in the Bamberg/Barnwell County area last week. All watermelons in the state should be sprayed with mancozeb as a preventative.”

Anthracnose lesions on watermelon leaf. Photo from Dr. Tony Keinath

Coastal Region

Zack Snipes reports, “It has been unusually hot for the month of May.  The current heat wave coupled with the lack of rain is really starting to have an impact on crops, even irrigated crops.  The tomato and melon crops look good but are starting to feel the intense heat and lack of rain.  I have seen very little disease and insect pressure on all crops.

Irrigated watermelons are looking great on the Coast. Photo from Zack Snipes.
Irrigated peppers wilting in the heat of the day. Photo from Zack Snipes

Midlands

Justin Ballew reports, “This past week was hot and dry. It felt more like July than May. It’s been over two weeks now since we’ve had any rain and irrigation systems are running a lot. In larger fields with overhead irrigation, we are seeing some wilting where the pivots aren’t getting around fast enough. Drip irrigated crops are looking good. Silks are starting to brown on the earliest planted sweet corn. Blackberry picking will begin soon and muscadines have begun blooming.

Collards wilting in between watering. Photo from Justin Ballew
Silks are turning brown on earliest planted sweet corn. Photo from Justin Ballew