Please click the link to access the March edition of the Louisiana crops newsletter.
Please follow the link above to access the section 18 letter. The approval letter outlines the effective and expiration dates for the use of Transform in sorghum, as well as specifics regarding number of applications and maximum acreage treated in Louisiana.
If you have any questions or concerns about sugarcane aphids or use of Transform in Sorghum please contact:
Sebe Brown at 318-498-1283 (cell) or 318-435-2903 (office)
Dr. David Kerns at 318-439-4844 (cell) or 318-435-2157 (office)
Dr. Julien Beuzelin at 337-501-7087 (cell) or 318-473-6523 (office)
Please see the link below for more information.
Dr. Ronnie Levy: LSU AgCenter Soybean Specialist
For more information please contact Dr. Ronnie Levy at firstname.lastname@example.org
The Louisiana Pollinator Cooperative Conservation Program (LPCCP) has been established to foster cooperation among bee keepers, pesticide applicators and agricultural producers for the purpose of preventing honey bees and pollinators from the unreasonable exposure to pesticides through education and stewardship recommendations in the state of Louisiana.
Cooperative Stewardship Recommendations Adopted by the Louisiana Pollinator Cooperative Conservation Program
Active and Open Communication Between Farmers, Applicators and Beekeepers:
Beekeepers, farmers and applicators are encouraged to cultivate and maintain open communication between all parties involved in cooperative activities concerning farming and beekeeping. Farmers, beekeepers and applicators should exchange contact information with one another to facilitate a strong level of communication that should be present in any partnership. Basic information should include: name, telephone number (cell and home), hive locations on the property, agricultural and non-agricultural commodities grown in fields adjacent to hive locations, and information regarding the pesticides applied on these commodities or areas and application timings throughout the growing season.
“Bee Aware” Flag:
The LPCCP has elected to adopt Mississippi’s “bee aware” flag to clearly identify hive locations adjacent to an agriculturally managed crop or area. The “bee aware” flag was developed by the Mississippi Farm Bureau to increase awareness of hive locations to farmers, applicators and beekeepers. The use of Mississippi’s “bee aware” flag creates a unified recognition system that is highly visible to pesticide applicators and farmers that manage commodities across state lines. The flags should be placed in an area that is easily visible to aerial and ground applicators and serve as a reminder that bees are in the vicinity and consideration should be taken when making pesticide applications. Farmers and beekeepers should work together in deciding on flag locations so it is visible to both aerial and ground applicators. Flag ordering information can be found here: http://www.mississippi-crops.com/wp-content/uploads/2014/03/Bee-Aware-Order-Information.pdf
Hive Locations and Placement:
Hive location is an important consideration that should be discussed between farmers and beekeepers. Farmers are very familiar with their property, equipment and areas that may offer a natural refuge from accidental exposure to pesticides, while beekeepers know the best habitats for bee yards, appropriate orientation of hives so the opening is not directly facing an agricultural field and areas that are easily accessible to beekeepers to facilitate honey collection and hive transportation. Farmers and beekeepers should discuss apiary locations and bee yards that are acceptable for both parties.
Hive GPS Locations:
Beekeepers should make every effort to establish GPS coordinates of their hives and provide this information to the farmer and his applicator to establish precise hive locations on farm property.
Hive Identification and Bee Flag Placement:
Beekeepers are strongly encouraged to place visible placards on at least one hive that provides contact information in case of an emergency or if an issue arises. The placard should clearly indicate the owner of the hives and should be visible from a distance. Farmers should work with beekeepers in selecting the best location for placement of the bee flag so it is visible to ground and aerial applicators. The LPCCP strongly encourages all beekeepers commercial and hobby to register their hives with the LDAF.
Applicator Awareness of Hive Locations:
The farmer should make every effort to notify his employees of apiary locations and related bee flags on farm property. Farmers should also notify contractual parties and aerial applicators of apiary locations and related bee flags as well.
Annual Apiary Location Review:
Farmers and beekeepers should annually review hive locations on farm property. This is especially important if an accustomed apiary location is moved to a new location on farm. Physical locations on a map or pinned locations on a smart phone may help facilitate this process.
Pesticide Application Timing
Farmers and applicators should consider applying pesticides to areas immediately adjacent to hives as late in the afternoon as possible. Most honey bees have ceased foraging by late afternoon (3 pm) and late applications will help reduce many risks of bee injury. Pesticide applications should only be made when wind conditions are blowing away from colonies and bee yards. Label guidelines should always be followed and applications should only be made when an economic threshold is met.
Harvest Checklist for Yield Monitors and Yield Data
Dennis Burns: Tensas Parish County Agent
- Check that all yield monitors have a list of fields, crops and varieties stored in the memory so that field names and crop information is correct and consistent
- Always start harvest with a clean data card.
- As harvest begins check out the yield monitor and moisture sensor to make sure that they are working correctly. A diagnostic check should have already been performed prior to starting harvest.
- A moisture calibration needs to be done prior to weight calibration
- Calibration should be done after the initial start of harvest. This will ensure that the harvester is operating efficiently for the crop being harvested.
- Calibration procedures vary by yield monitor manufacturer. There are several ways to calibrate a yield monitor. The first option is to follow the yield monitor manufacturer’s directions and procedures. Another way is to cut a full truck load of grain or a module of cotton and compare its weight to the weight on the yield monitor. If this method is used the load needs to be the first load of the day. By the time a truck load has been cut there have been enough variations in speed and crop conditions to produce a reasonable calibration factor.
- Regardless of the method used to calibrate a yield monitor don’t change the calibration factor for that crop until harvest is complete or there is a large weather event or mechanical problems with the yield monitor. This will allow the producer to do a post calibration after harvest is complete.
- If multiple machines are used at harvest, calibration is essential to being able to get accurate yield data when they are combined into one yield file.
- Analysis of the yield data is the last step in the harvest process. The value of the information which can be gained from analyzing yield data is unlimited. Drainage, irrigation, fertility, variety and other production practices can be evaluated and used in planning the next year’s crop. Whether the producer does the analysis or hires it done, the value outweighs the expense.
David Kerns and I have been receiving numerous phone calls this week about problems with applications of pyrethroids tank mixed with Transform for control of midge and white sugarcane aphid. The use of a pyrethroid for control of sorghum midge is a common practice in Louisiana; however, pyrethroids are very toxic to beneficial insects and are very likely to flare white sugarcane aphids in grain sorghum. Co-appliations of Transform and a pyrethroid have led to white sugarcane aphids recolonizing fields very rapidly and often resulting in poor control of aphids overall.
Therefore, automatic insecticide applications for midge should be avoided, and applications should only be made if midge are present. The Louisiana threshold for midge in sorghum is at 25 – 30% bloom, treat for one or more midge per head. If midge and sugarcane aphids are present, tank mixed applications of chlorpyrifos and Transform will offer good midge control while also reducing the risk of flaring aphids. Chlorpyrifos may not be quite as effective as a pyrethroid for sorghum midge and large populations may require a second application 3 – 4 days later. Transform tank mixed with Dimethoate is another option for midge and aphid control; however, producers should be prepared to follow up with a dedicated midge application 3 – 4 days later.
Also, pyrethroid applications for the headworm complex in grain sorghum are strongly discouraged. Pyrethroid resistance is very common in sorghum webworm and corn earworm in Louisiana, and insecticides such as Belt or Prevathon should be used for headworms. These chemistries are Lepidopteran specific and will not harm beneficial insects or flare sugarcane aphids.
David Kerns and I have been receiving numerous calls about white sugarcane aphid infestations in grain sorghum. Much of the grain sorghum is boot to heading stage and is being treated for midge with aphids in the mix. Many of these situations present unique issues with product choice and resulting effect on aphids. Please follow the link for insight on this situation and options for controlling white sugarcane aphids in grain sorghum.
Infestations of sugarcane aphids in boot to heading grain sorghum are increasing in Louisiana. Many of these populations start off small and exponentially increase in a span of 5 to 7 days. Pyrethroid applications for midge control can reduce natural enemy numbers allowing sugarcane aphids to reach damaging numbers faster. Honey dew produced by sugarcane aphid feeding will give the crop a glossy appearance and large accumulations will often result in sooty mold growth and harvesting issues later season.
Sugarcane aphids are difficult to control with currently labelled insecticides; however, Louisiana was granted a section18
emergency exemption for the use of Transform 50WG for the 2014 production season. Transform applications should be initiated before grain sorghum becomes heavily infested and producers in Texas are making applications at 30% infested plants with 100 to 250 aphids per leaf present. Use lower aphid numbers with increasing stress due to plant water deficit. This treatment threshold appears to be working for Texas growers; however, these recommendations are not supported by university research due to the recent introduction of this pest to grain sorghum in the United States. Transform applications of 1 oz/acre should be used on medium to high sugarcane aphid populations with the largest gallonage per acre (GPA) feasible for applicators (5 GPA by air or 20 GPA by ground). If 1 ounce applications of Transform are not providing adequate control the rate should be increased to 1.5 oz/acre.