Progress 02/27/14 to 09/30/18
Outputs
Target Audience:The audience includes state, regional, national and international members of the scientific community conducting research on stored product insect pests. State and regional grain industry representatives and individual growers interested in preservation of stored cereal grains are also included in the overall audience. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?Attending NC-213 meetings provivded an opportunity to interact with others researching methods to improve the quality of stored grain and other postharvest commodities. Attendees also include leading industry representatives and national leaders of commodity organizations. Also attended state and regional level grower organization meetings where postharvest issues are frequently reviewed. How have the results been disseminated to communities of interest?Scientific publications, newspaper articles, training sessions and classroom lectures all providea consistent message of the value of good storagepractices. Newspaper articles reach local community members not directly engaged in commodity storage. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
During this current project research and dissemination efforts have yielded potential new nanoinsecticidal products for biorational management of stored grain insects. This can readily be coupled with aeration techniques to maintain grain quality, especially in Montana. Montana growers can now better understand the link between preharvest pests such as the orange wheat blossom midge, wheat head armyworm and wheat stem sawfly and the loss of quality in postharvest assessments. Life history data and economic loss models showinteractions between pests and natural enemies in field crop systems that can impact postharvest what quality. The new spring wheat cultivar 'Egan' with resistance to orange wheat blossom midge was developed. This cultivar significantly decreases the incidence of shrunken and shriveled kernels in areas where this preharvest pest is abundant. Growers and grain elevator operatorsdeveloped a strong awareness of the ability for insect damaged kernels to be found at harvest where wheat head armyworm is found duringthe growing season. Equally important is the knowledge that stored product insect pests do not infest preharvest in Montana. This led to more accurate assessments of grain quality and insects causing these losses.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2018
Citation:
Bekkerman, A. and D. K. Weaver. 2018. Modeling joint dependence of managed ecosystems pests: The case of the wheat stem sawfly. Journal of Agricultural and Resource Economics 43(2): 172-194.
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Progress 10/01/16 to 09/30/17
Outputs
Target Audience:The audience includes state, regional, national and international members of the scientific community conducting research on stored product insect pests. State and regional grain industry representatives and individual growers interested in preservation of stored cereal grains are also included in the overall audience. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?Attended the NC-213 regional meeting in Kansas City. This provided the opportunity to interact with others researching methods to improve the quality of stored grain and other postharvest commodities. Attendees also included leading industry representatives and national leaders of commodity organizations. How have the results been disseminated to communities of interest?Grower training sessions and in the classroom - as part of AGSC 401 Integrated Pest Management. What do you plan to do during the next reporting period to accomplish the goals?Evaluate postharvest storage practices of Montana wheat and pulse crop producers. Provide training and outreach on good postharvest storage practices to Montana crop growers and memers of the agribusiness community.
Impacts
What was accomplished under these goals?
Goal 2. Basic fundamentals of good postharvest storage of grain were presented to industry and grower audiences.
Publications
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Progress 10/01/15 to 09/30/16
Outputs
Target Audience:The audience includes state, regional, national and international members of the scientific community conducting research on stored product insect pests. State and regional grain industry representatives and individual growers interested in preservation of stored cereal grains (and also the potential for damage to mature kernels by pre-harvest insect species) are also included in the audience. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?I was able to interact with commodity producersata trade meetings (Montana Ag Business Association in January 2016)to discuss concerns about grain quality after harvest. New concerns about resistance to fumigantswere discussed. How have the results been disseminated to communities of interest?Grower training sessions and in the classroom - as part of AGSC 401(Integrated Pest Management). Discussed preharvest IDKs at a Field Day in Conrad, Montana on June 23, 2016. What do you plan to do during the next reporting period to accomplish the goals?Provide stored product insect integrated pest management training, both species identification andmanagement tactics, in the annual Montana Crop Pest Management School in early January. Continue to disseminate information regarding safe storage and preharvest IDK atthe Annual MABA/MGEA meeting in Great Falls in late January, 2017. Attend the NC-213 meeting in late winter.
Impacts
What was accomplished under these goals?
Goal 2. High grain prices led to increased on-farm storage over a mild winter. This situation resulted in a need to update growers on the risks of storing grain and how to preserve quality. Basic fundamentals of good storage were discussed with grower audiences. Analysis ofdepth of penetration into storedcommodities by insect pests suggests that species coloninizinggrain within bins can migrate a considerable distance through the grain bulk.A journal manuscript will be prepared for this research.
Publications
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Progress 10/01/14 to 09/30/15
Outputs
Target Audience:The audience includes state, regional, national and international members of the scientific community conducting research on stored product insect pests. State and regional grain industry representatives and individual growers interested in preservation of stored cereal grains are also part of the audience. As mentioned in the last report, the audience now includescereal crop producers becausethe direct kernel damage caused by two insects, the wheat head armyworm and the orange wheat blossom midge, is often scored as IDK (insect damaged kernels) or rated as lower quality due to reducedkernel filling when damaged by larvae of the orange wheat blossom midge. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?I was unable to attend the Annual Meeting of the NC-213 project due to an unantcipated schedule conflict, but the meeting I was required to attend insteadhad a poster session, with several on quality attributes of harvested grain. I had the oppportunity to hear concerns from Montana agribusiness about control failures ininfested stored grain.There was a lot of interest regarding previous researchwe conducted using aeration as the primary method of maintenance of quality inMontana, primarily due to better exploitation ofgenerally favorable storage conditions. How have the results been disseminated to communities of interest?Scientific literature, field days and in the classroom. What do you plan to do during the next reporting period to accomplish the goals?Provide stored product insect integrated pest management training in the annual Montana Crop Pest Management School in January and attend the NC-213 meeting in late winter. Continue to disseminate information regarding safe storage and preharvest IDK at Field Days.
Impacts
What was accomplished under these goals?
Goal 1. Concerns among wheat growers continued regarding late season pre-harvest damage to kernels by the wheat head armyworm and now, also by the orange wheat blossom midge. Clarification reassuredgrowers that there is no continued damage or postharvest survival in commodity by either species. Inspectors expressed frustration because theymust score these as insect damaged kernels, which is correct, but it is not representative of infested stored grain. An MSU monitoring program for wheat head armyworm using pheromone trps was led by a colleague, and there wereonly a few populations that were of concern. It is also unneccesary to fumigate or treat stored wheat damaged by either of these injurious late season insects. This is a change in knowledge and a change in action that follows on last year.It is critical thatgrowers be aware of the distinction, even though insect damaged kernels are scored at delivery. Goal 2. It appears that the activity due to nanoparticulate insecticides is difficult to enhance with volatile compounds that are on the GRAS (Generally Regarded As Safe) list. The research is ongoing, but it appears that the hypothesis of additive or synergistic interactions is not likely to be supported.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2015
Citation:
Buteler, M., S. W. Sofie, D. K. Weaver, D. R. Driscoll, J. Muretta and T. Stadler. 2015. Development of nanoalumina dust as insecticide against Sitophilus oryzae and Rhyzopertha dominica. International Journal of Pest Management 61: 80-89.
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Progress 02/27/14 to 09/30/14
Outputs
Target Audience: The audience includes includes state, regional, national and international members of the scientific community conducting research on stored product insect pests. State and regional grain industry representatives and individual growers interested in preservation of stored ceral grains are also part of the audience. Notably, the audience has expanded to include cereal crop production because of the direct kernel damage cause by two insects, the wheat head armyworm and the orange wheat blossom midge. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? A training session on "Good on-farm storage practices" was held on November 6 in Bozeman. This was specifically offered for 12 new County Extension personnel at their request.. Incorporated a specific stored-product insect management lecture in rubric AGSC 401 (Integrated Pest Management) How have the results been disseminated to communities of interest? Scientific publications, newspaper articles, training sessions and classroom lectures. The newspaper articles will reach local community members not directly engaged in commodity storage. What do you plan to do during the next reporting period to accomplish the goals? Provide stored product insect integrated pest management trainingin the annual Montana Crop Pest Management School and attend NC-213 meeting in February. For research, we will investigate combining natural source compounds with known insecticidal properties with nanoinsecticides to see if we can enhance efficiacy when tested as a single product..
Impacts
What was accomplished under these goals?
Goal 1.Aconcern among wheat growers developed regarding late season damage due to insect damaged kernels (IDK) caused by the preharvest pest, the wheat head armyworm. Clarification ensured that wheat head armyworms do not continue to cause damage in storage, although it is very difficult for inspectors to separate the cause of IDK.Mitigation before harvest is not possible, and poses risk of late season insecticide residue. It is also unneccesary to fumigate or treat wheat damaged by this insect. This is a change in knowledge and a change in action. Goal 2. Research was continued on the development of nanostructured insecticides forstored product pest management. These insecticides are active at100 ppm. which is less than currently recommended products with a similar mode of action. Goal 3. Informationregarding insect damaged kernels caused by the wheat head armyworm and the impact ongrain quality will be of value to other states encountering this pest, particularly those with considerableon-farm storage.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2014
Citation:
Blake, N. K., R. N. Stougaard, B. Bohannon, D. K. Weaver, H.-Y. Heo, P. F. Lamb, D. Nash, D. M. Wichman, K. D. Kephart, J. H. Miller, G. V. P. Reddy, J. L. Eckhoff, W. E. Grey, S. P. Lanning, J. D. Sherman, and L. E. Talbert. 2014. Registration of Egan wheat with resistance to orange wheat blossom midge. Journal of Plant Registrations 8: 298302.
- Type:
Journal Articles
Status:
Awaiting Publication
Year Published:
2015
Citation:
Sofie, S. W., Buteler M., Weaver, D. K., Driscoll D.R. and T. Stadler. In Press. Development of a nanoinsecticide based on alumina oxide. International Journal of Pest Management. 61: xxx-xxx
- Type:
Journal Articles
Status:
Published
Year Published:
2014
Citation:
Throne, J. E. and D. K Weaver. 2013. Life history parameters of adult Angoumois grain moths (Lepidoptera: Gelechiidae) on stored corn. Journal of Stored Products Research. 55: 128-133.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2014
Citation:
Stadler, T., M. Buteler, S.W. Sofie and D.K. Weaver. 2013. Nanostructured materials and their potential as pest control tools. Symposium Stored Product Entomology: Impacts on a Connected World . 61st Annual Meeting of the Entomological Society of America. Austin, TX. November 13.
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