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Extension Entomology

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Pesticide Recordkeeping Survey

–by Frannie Miller

 

Private applicators are required to keep records of their restricted use pesticide (RUP) applications. The classification of several commonly used herbicides to restricted use means more private applicators are in need of an improved mechanism to keep these records. The Kansas State Pesticide Safety program is trying to collect some data on what producers are wanting/needing to be able to keep more accurate, efficient records.  The program has developed a short survey consisting of 7 questions and wants to obtain feedback from across the state.  The purpose of this survey is to gather your perceptions related to the use of pesticide recordkeeping books/apps and what you would most likely use.  The information you provide will aid us in determining the need for and content of a newly developed pesticide recordkeeping book to assist in tracking pesticide application/use.

Please go to: https://kstate.qualtrics.com/jfe/form/SV_86r84ilD5huDIUZ to complete the survey and give us your feedback.

2019 Kansas Paraquat Training Information

–by Frannie Miller, Pesticide & IPM Coordinator

Frequently Asked Questions

So do all paraquat dichloride product labels require the additional training?

The Environmental Protection Agency is allowing the sale of paraquat that is already in the channels of trade, so some paraquat sold during this growing season may NOT require the new training requirement on the label. In the future all products featuring the new labeling with the active ingredient paraquat dichloride, such as Gramoxone, Firestorm, Helmquat and Parazone will require the additional training in order to apply these products. Remember if the new training requirement is listed on the label of the product you are using, then you MUST complete the training.

How often am I required to receive the training?

The training is required every three years.

Do I need to be certified to use products containing paraquat dichloride?

The newly labeled products state that “Product may ONLY be mixed, loaded or applied by a certified applicator who has successfully completed the paraquat-specific training before use. Application “under direct supervision” of a certified applicator is NO LONGER allowed. In the state of Kansas, this means that everyone purchasing and using these products has to either obtain a private applicator license (application to agricultural lands owned or operated by individual) or a commercial applicator license (applicators applying to other people’s land for compensation). If you have been applying under someone else’s license in the past you will need to get your own license before applying these products.

 

How can I complete the training requirements?

 

The only training that meets the requirements is housed on the eXtension website and can be found by going to: http://usparaquattraining.com. If you don’t currently have an account you will need to create one before it will allow you to take the training.

 

This information is made available by the K-State Pesticide Safety and IPM Program. Contact your local Extension Office if you need any additional information.

 

 

2019 Kansas Dicamba Training Information

–by Frannie Miller, Pesticide & IPM Coordinator

Frequently Asked Questions

 

Do all dicamba product labels require the additional training?

You are required to have additional label-required dicamba training when applying the restricted use dicamba products: Engenia, FeXapan, or XtendiMax.

Where can I get the training for 2019?

BASF:  (webinars, online training and face to face) https://www.engeniastewardship.com/#/training

Bayer/Monsanto: (online training and face-to-face) https://www.roundupreadyxtend.com/stewardship/education/Pages/default.aspx

Corteva: (online training)

https://www.corteva.us/products-and-solutions/crop-protection/fexapan.html

 

Do I need to attend training if I already did in 2018?

The labels of these products state that prior to applying this product in the 2019 growing season, all applicators must complete dicamba or auxin-specific training on an annual basis, so even if you attended in 2018 you will need to attend a training in 2019 prior to applying these products.

 

Do I need to be certified to use these products?

The new labels state that these formulations are for retail sale to and use only by certified applicators. In the state of Kansas, this means that everyone purchasing and using these products has to either obtain a private applicator license (application to agricultural lands owned or operated by individual) or a commercial applicator license (applicators applying to other people’s land for compensation). If you have been applying under someone else’s license in the past you will need to get your own license if you are applying these products.

 

My hired hand and I both hold private applicators licenses. He will be doing all my spraying. I am taking the dicamba training, but does he also have to take the dicamba training?

Yes, anyone who applies one the RUP dicamba products must complete an approved dicamba training and hold either a private or commercial applicator license.

 

Do other states accept Kansas’s state-approved RUP dicamba training?

Nebraska accepts all other states’ training so long as the applicator receives the Nebraska Department of Agriculture module with its state specific information. Oklahoma and Colorado will accept Kansas’s state approved training. This year Missouri does not have any state specific rules so they will be accepting the registrants training, but applicators need to note they apply in MO so the training can be turned into that state.

 

This information is made available by the K-State Pesticide Safety and IPM Program. Contact your local Extension Office if you need additional information.

 

Sugarcane aphid expanding to new counties in Kansas

New detections of sugarcane aphid (click here for identification and management information) have been reported this week for Kansas counties: Kearney, Pawnee, Scott, Finney, Comanche, Reno, Barton and Saline.

Several fields in Finney, Ford, Meade, and Pratt have reached threshold levels and have been treated. However populations reported from the other counties remain low and were found on only a few hot spots within a field. Remember that hot weather can increase SCA numbers rapidly! See current map here.

Note that the economic threshold is 20% of pre-boot plants infested with established colonies (>100 aphids), or 30% of plants infested post-boot.

Treatment options are either Transform (1 oz per acre) or Sivanto (4 oz per acre). For earlier stage plants, Sivanto will provide a longer period of protection, but is about 40% more expensive. For plants that have headed out, Transform will be a more economic option, as a long period of residual activity will be less important, and it is also safer for the beneficial species. For a list of products and labels, visit the myFiels.info Insecticide Selector.

DO NOT mix these products with any organophosphates or pyrethroids or any combinations thereof – it will actually reduce their efficacy.

If there is a need to control headworms, these products can be mixed with either Prevathon or Blackhawk, but nothing else.

For help with scouting and identification, click here to see instructions and pictures.

To see local management information, click here.

For more help, contact your local Extension office. Find yours by clicking here.

 

Sorghum Update – ‘Ragworms’, ‘Headworms’, and Aphids

–by Dr. Jeff Whitworth and Dr. Holly Davis

Late planted sorghum is still causing considerable concern throughout north central Kansas as the leaves grow out of the whorl and are significantly ‘chewed up’ looking.  These ‘ragworms’, primarily corn earworms and fall armyworms but also a few cattail caterpillars, are still active in younger plants.

 

As these plants reach reproductive stages, i.e. flowering, there will be a high probability of having ‘headworms’ (corn earworms and fall armyworms) infesting the kernels.  Sorghum heads are the most vulnerable between flowering and soft dough.  There are currently significant infestations of these headworms throughout north central Kansas with worms in various stages of development.  Headworms cause approximately 5% loss per worm, per head.

 

There are large numbers of corn leaf aphids, greenbugs, and even a few yellow sugarcane aphids around north central Kansas.  The first report of a sugarcane aphid colony from Saline Co. was made on 16 August. These aphids are attracting, and providing food for, large numbers of beneficials which seem to be keeping aphids relatively well controlled.  Insecticide applications have not been needed for aphids. More information on sugarcane aphids in Kansas can be found at My Fields: https://www.myfields.info/pests/sugarcane-aphid

 

For more information regarding sorghum insect pest management please refer to the KSU 2018 Sorghum Insect Management Guide: https://www.bookstore.ksre.ksu.edu/pubs/mf742.pdf

Bugs at Lights

— by Dr. Jeff Whitworth and Dr. Holly Schwarting

Much interest has been generated throughout north central and south central Kansas relative to “hundreds” of black beetles around lights at night.  The majority that we have identified are ground beetles in the family Carabidae, most specifically, Harpalus pennsylvanicus.

These beetles are attracted to lights at night and mainly become a pest by trying to get inside homes, businesses, or other outbuildings the next morning.  Although they can be a serious nuisance because of their sheer numbers and activity, beetles that do make it into dwellings will die shortly afterwards and will not cause any damage.  These populations should slowly dwindle over the next week or two.

Sorghum Update – Sugarcane aphids

–by Dr. Jeff Whitworth and Dr. Holly Schwarting

Sugarcane aphids are still present in sorghum fields examined over the last week but, like soybean aphids, seem not to have increased in densities or coverage.  However, continued monitoring is prudent.

 

To see the current sugarcane aphid distribution map please visit MyFields: https://www.myfields.info/pests/sugarcane-aphid

For management decisions please refer to the 2017 Sorghum Insect Management Guide: https://www.bookstore.ksre.ksu.edu/pubs/MF742.pdf

Soybean Update – Thistle caterpillars, Stink bugs, and Soybean Aphids

–by Dr. Jeff Whitworth and Dr. Holly Schwarting

Thistle caterpillars have mostly vacated their webbed cells and are or have pupated.  That is why there are huge numbers of painted lady butterflies flying around on most rural roads throughout north central Kansas.  Hopefully, these butterflies will head south for overwintering and will not start laying eggs in soybean or sunflower fields.  However, fields need to continue to be monitored for small thistle caterpillars, especially double-cropped soybeans. Additionally, monitor for the continued presence of green cloverworms, although these populations seem to be declining quite rapidly around north central Kansas.

 

Phytophagous stink bugs, both brown and green, are increasing in many soybean fields.  Either may insert their mouthparts into the seed within the pods and suck out juice from the developing seed.  However, there are also brown stink bugs that are predatory on pests like the yellowstriped armyworm (shown below) which has been killed and is being utilized as a food source by this beneficial stink bug.

 

Soybean aphid populations are still present in all fields examined this week in north central Kansas, but are not increasing in density or coverage.

 

 

For management decisions for all soybean pests please see the 2017 Soybean Insect Management Guide: https://www.bookstore.ksre.ksu.edu/pubs/MF743.pdf

 

Soybean Update

–by Dr. Jeff Whitworth and Dr. Holly Schwarting

 

Thistle caterpillars have not all pupated or emerged as adults yet in north central Kansas.  However, probably the majority of the larvae have finished leaf feeding and the adults have initiated oviposition.  There are still large numbers of adult butterflies navigating throughout soybean and sunflower fields.  Thus, scouting for the larvae should be an ongoing endeavor for probably another three weeks.

 

At the same time there are starting to be pretty good populations of green cloverworms in these same soybean fields.  Fields in the early to mid-reproductive stages are less tolerant to defoliation.  Populations last year caused considerable skeletonizing and resulted in many acres being treated.  However, there were also numerous fields that had green cloverworms controlled by an entomophagous fungus.

 

 

 

 

This highly visible white fungus will probably attack the green cloverworms again this year and may even do so, so effectively that insecticide applications are not necessary.  However, please keep in mind there is a lag time between a green cloverworm infestation of soybeans and larval infection by the fungus leading to their destruction.  But, they usually slow down or stop feeding soon after becoming infected, even if not actually killed for a few days.

Soybean stem borers seem to be relatively numerous around north central Kansas as well.  Oviposition by the females in the stem, at the site of the petiole attachment, is continuing.  Many eggs have already hatched and larvae are tunneling downward in stems where they will internally girdle around the interior of the stem and end up in the base of the taproot where they overwinter.

 

 

 

 

Spider mites are still present in north central Kansas, but so far seem to be very spotty.  These populations need to continue to be monitored during the plant’s reproductive stages.

 

 

Corn earworm larvae (soybean podworms) seem to just be getting started in south east Kansas and can cause considerable damage quickly by feeding on seeds within the pods.

 

 

Soybean aphids were first reported on 11 Aug, 2017, from the KSU Research Farm at Ashland Bottoms, just south of Manhattan, KS, by Rene Hessel and Bill Schaupaugh. These aphids have been found in the state every year since their first detection in 2002.  Beneficial’s are usually very active around these aphid colonies and help keep them from flourishing.  However, these small aphids need to be monitored periodically, especially in soybean fields treated for other pests, as these treatments may reduce the beneficial’s, and thus, any control which they may have provided.

For management of all these soybean pests, and others, please refer to the KSU Soybean Insect Management Guide: https://www.bookstore.ksre.ksu.edu/pubs/MF743.pdf

 

 

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