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The Final “Using Pesticides Wisely” Classroom Training Opportunity for 2018!

All Georgia corn, cotton and soybean growers planning to use the new dicamba and 2,4-D herbicides, in-crop, must complete the required “Using Pesticides Wisely” training before applying Engenia, Enlist Duo, Enlist One, Fexapan or Xtendimax.

The Georgia Department of Agriculture and the University of Georgia Cooperative Extension Service will be hosting the final “Using Pesticides Wisely” training on Friday, June 1, 2018 from 10 a.m. – 12 p.m. See location details below:

Atlanta Farmers Market
Georgia Grown Welcome Center
16 Forest Parkway

Forest Park, GA 30297

If you are a corn, cotton or soybean producer and you have not completed the “Using Pesticides Wisely” training, this will be your final opportunity to fulfill this mandatory requirement for the 2018 growing season.

For more information, please contact the Ag Inputs Section of the Georgia Department of Agriculture at 404-656-4958, your local UGA Cooperative Extension office or visit\24c.aspx.

Managing Scab Pressure/Leaf Roll Mites

UGA Pecan specialists Lenny Wells shares information on scab pressure and leaf roll mites. With 10 successive days of rain behind us and no relief in site and a potential tropical storm bearing down on us, pecan growers are under the gun for scab pressure right now. Most days have provided some breaks in the rain showers that have allowed growers to get out and spray at least a portion of their acreage. But, the question is what to spray with when growers can get into the orchard.

We are currently transitioning from worrying about leaf scab as the leaves should be hardening off soon to worrying about nut scab as the nuts begin the sizing period. One of the best materials to be using at this stage with the pressure we are having would be one of the DMI/Strobi mixes (Group 3 + Group 11) like Absolute or Quadris Top if  you have not used them 2 or 3 times already. The problem we are running into is that most growers are coming off of spraying this chemistry in their last couple of sprays. If this is the case, what should growers go to at this point?

The answer would largely depend on what has been used already but in the scenario above—if you have already used a couple of group 3 & 11 mixes—you have a few options. The right choice will probably depend on variety.

For moderately susceptible varieties like Sumner, Stuart, Schley, Oconee, etc. you could go with something like a 2 qt rate of Phosphite alone or a group 3 fungicide (Tebuconazol, Propiconazol, Tetraconazol, etc.) + either Phosphite or Tin

For highly susceptible varieties like Desirable, Pawnee, Caddo, Cunard, a better option would be something like 25 oz Elast and 1 qt of Phosphite.

Regardless of what you use, it is probably a good idea to tighten that spray window to 10 days minimum on scab susceptible varieties.


We have also had a number of calls about leaves curling at the edges a seen in the photo below:

This is a result of feeding by pecan leaf roll mite. Their feeding causes galls at the outer margin of the leaflet, which causes the edges to curl up and sometimes turn brown. This distorts the leaflet but does not usually cause defoliation. Most of the time this damage is only cosmetic and does not require treatment.



Downy Mildew of Cucumber Detected in South Georgia

By Bhabesh Dutta, Downy mildew of cucumber has been detected from the Brooks County, GA. These observations indicate that inoculum of downy mildew is currently in southern GA counties  and under favorable conditions  potential disease outbreak in other cucurbits  can occur. I would suggest our cucurbit growers to look for the downy mildew symptoms in their fields and start applying protective spray of below stated fungicides.




Watermelon: Rotation (foliar application)  with  Orondis ultra (provide protection against both Downy and P. capsici);



Previcur flex+Bravo/Manzate


Please do not use Bravo after fruit set.


Other cucurbits: Orondis opti;



Previcur flex+Bravo


If Orondis was used as a soil application, please do not use it as foliar (use restriction according to label).



North Florida/South Georgia Cold Tolerant Citrus Workshop




Sat. June 2,2018



UF/IFAS Extension Taylor County • 203 Forest Park Drive • Perry Florida 32348


8:30–9am Registration


Welcome – plan for the day

Mr. Dan Fenneman, UF/IFAS Extension Madison County CED



Backing up your electric powered freeze protection

Mr. Arley Brillion, Mastery Engine Center, St. Petersburg Florida



Automating your irrigation, fertigation and freeze protection with air and soil moisture sensors

Doug Crawford, BMP Logic, Trenton Florida



Irrigation design for fertigation and chemigation

Dr. Charles Barrett UF/IFAS Suwannee Valley REC



Selling citrus – how do I get paid

Mr. Adam Roe, W.G. Roe and Sons, Winter Haven Florida



Latest innovations in freeze protection

Kim Jones, Bethel Oaks Farm, Monticello Florida and

Clay Lamar, 1 Dog Ventures, Georgia



Tour of Grams Legacy Grove in Perry Florida

Andy Jackson


Questions? Contact

Clay Olson UF/IFAS Extension Taylor County


Dan Fenneman UF/IFAS Extension Madison County


2018 Perennial Peanut Field Day

2018 Perennial Peanut Field Day
Thursday, May 31st, 2018
155 Research Road, Quincy, Florida 32351
9:30 a.m. (EST) Registration begins
10:00 – 10:05 a.m. Welcome, Glen Aiken, NFREC director
10:05 – 10:20 a.m. Business Meeting, Steve Caruthers, PPPA President
10:20 – 10:40 a.m. “Perennial Peanut Roots: Getting to Know Your Neighbors,”
Victor Guerra
10:40 – 11:00 a.m. “Digging Deep, Perennial Peanut Belowground,”
Katie Cooley
Walk to perennial peanut research plots.
11:10 – 12:00 p.m. Field tours of ornamentals, diseases, and weed ID,
Sunny Liao, Ian Small, Gary Knox, Cheryl Mackowiak,
Brent Sellers, Doug Mayo, Jose Dubeux, and Ann Blount
12:00 – 12:45 p.m. Lunch
12:45 – 1:05 p.m. “Landscapes with Perennial Peanut,” Gary Knox,
Clay Olson, Jerry Stageman
1:05 – 1:30 p.m. “Soil Type and Grass Influences on Perennial Peanut,”
Cheryl Mackowiak
1:30 – 2:15 p.m. “Weed and Herbicide Update,” Brent Sellers
2:15 – 3:00 p.m. Producer panel discussion, wrap up and evaluation,
Moderated by Doug Mayo, Jackson County Extension

The Impacts of China Trade Tariffs on Georgia Livestock Industry

By Levi Russell

China implemented a 25 percent increase in import tariffs on United States pork and is expected to increase import tariffs on United States beef products by 25 percent. However, unlike many row crops and other agricultural products, China is not a primary destination for United States meat products. Beef exports to China only resumed recently and there is not yet a significant amount of beef being produced in the United States that is exported to China. In 2017, the United States was the second largest pork producer after China, and the largest pork exporting country (USDA FAS, 2018b). Twenty-two percent of pork produced in the United States enters the export market (USDA FAS, 2018b). From January 2013 to January 2018, the USDA ERS reports that mainland China made up 7.5% of total United States pork exports, coming behind Mexico (29.3%), Japan (25.1%), Canada (10.4%), and South Korea (8.1%). Pork production is mainly concentrated in the Midwest and North Carolina, and Georgia is not in the major pork producing regions. The impact of the tariffs on pork will be minimal on Georgia’s agricultural industry. However, the reductions in pork prices could hurt some of the pork producers in Georgia. For beef and pork (and other meats), the NAFTA trade discussions are a far bigger concern than Chinese tariffs.

Short-term market fluctuations this year in both cattle and hog markets will almost certainly depend much more on rising supplies, domestic consumption, and exports to other countries than on Chinese tariffs. A recent report by the USDA FAS indicates that the reductions in exports to China will mostly be offset by the increases in shipments to Japan, Mexico, and the Philippines. Exports of both pork and beef from the United States are expected to rise this year, in part due to relatively low United States prices (USDA FAS, 2018a).

In the long term, however, these increased tariffs on pork and beef products constitute a missed opportunity, as China is the number one pork-consuming nation in the world. New sources of demand for United States producers are hard to come by and higher tariffs on beef and pork will likely result in increased production in other countries to fulfill China’s growing demand. This will put the United States at a competitive disadvantage in the long term if the tariff increases are put in place on United States beef and pork products.



USDA FAS. (2018a). Livestock and poultry: world markets and trade. Washington, D.C. Retrieved from

USDA FAS. (2018b). Production, Supply and Distribution Database.  Retrieved April 25, 2018

Lowndes Pecan Meeting

Lowndes Pecan Update Meeting


Tuesday, May 29, 2018

Lowndes County Extension Office



Call 229-333-5185 by Friday, May 25, if you are attending so we can prepare for lunch and room set up.


12:00               Welcome

Mr. Jake Price

Lowndes County Extension


                        Lunch Served    


Word from sponsors


12:45               Pecan Updates         


Dr. Lenny Wells

Extension Pecan Specialist

Dr. Will Hudson

Extension Pecan Entomologist

Mr. Jason Brock

Extension Pecan Pathologist


Closing Comments


                        Pesticide Credits



Plant Food Systems

Gary Veal (229) 425-1407


Miller Chemical

Darin Singleton   (229) 400-1194


Bayer Crop Science

                    Jake Ford – (229)-686-4203




Some relevant information on Powdery mildew of cucurbits

Powdery mildew is a common disease of cucurbits under field and greenhouse conditions in most areas of the United States.  Although all cucurbits are susceptible, symptoms are less common on cucumber and melon because many commercial cultivars have resistance. This disease can be a major production problem if not manage timely.

Podosphaera xanthii and Erysiphe cichoracearum are the two important fungal organisms that cause cucurbit powdery mildew. P. xanthii is a more aggressive pathogen than E. cichoracearum.  E. cichoracearum requires a lower temperature optimum and hence, this fungus is found mainly during cooler spring and early summer periods. In contrast, P. xanthii are more common during the warmer months.

The causal fungi are obligate parasites and therefore cannot survive in the absence of living host plants. Possible local sources of initial inoculum include conidia from greenhouse-grown cucurbits, and alternate hosts. Verbena, a common ornamental plant and also a common weed, could be an important source of inoculum.

Pathogenically distinct races of Podosphaera xanthii have been differentiated on muskmelon.  Races 1 and 2 have most common in the eastern United States recently.

Fungicides: Quintec, Proline, Torino (rotation in watermelon and cantaloupe)

Proline, Torino, Procure (rotation in other cucurbits)

Pecan herbicide injury

Dr. Lenny Wells shares shares information on herbicide damage in pecan trees.  Row crop planting has started in south Georgia and this means herbicide drift season has arrived. I have been on the road all week looking at drift-damaged trees. Since I cannot make it to every orchard in which this occurs, here are the steps that should be taken when a drift incident happens:

Glyphosate injury on both leaves to the left. ZInc deficiency on leaf to the right.

Glyphosate injury to pecan

If growers have had herbicide drift injury occur on their trees, they should first contact their county agent and take photos for documentation. The Georgia Department of Agriculture should also be contacted to take their own samples as soon as possible if a complaint will be filed. Many of these herbicides have a very short half-life and samples must be taken quickly in order to detect them in leaf tissue.  The next step is to contact the neighbor from whom the drift originated and contact the neighbor’s insurance agency to notify them the incident occurred. Once everything has been documented it is usually a wait and see situation because of the high degree of variability from one case to the next. Often with glyphosate, glufosinate, paraquat, and flumioxazen, the injury is more cosmetic than economic unless there is extensive coverage, leading to significant leaf and flower/nut loss. Quality may also be affected if extensive foliage damage occurs because the trees must expend energy to re-grow new foliage. The only way to know the extent of damage for sure is to evaluate the crop at the end of the season. Repeated injury, of course, will lead to more serious losses and can cause long term damage to the trees.

Paraquat injury to pecan. Damage initially appears as yellowing of tissue and then turns brown and necrotic.

Older paraquat injury to pecan. All damaged tissue has turned brown and necrotic.

Dicamba and 2,4-d may throw a more complicated scenario into the equation. Based on data from the trials Dr. Eric Prostko and I have been conducting, injury from these materials, especially 2,4-D can be more serious if a high rate of the chemical makes direct contact with the tree’s tissue. In this case we have seen death of those branches that had direct contact. Once again, the degree of damage severity will depend on the rate and coverage. The same steps described above should be taken in the event of drift from these materials.

Initial appearance of auxin (2,4-D and dicamba) herbicide injury

Arrested nut development of terminals affected by auxin herbicide

Branch die-back from auxin herbicide injury