Progress 10/01/17 to 08/31/19
Outputs
Target Audience:The target audience is Montana wheat growers, consumers, stakeholders, Montana State University Extension Offices, and the Montana Department of Agriculture. Changes/Problems:There are no changes and problems occured during the period of this project. What opportunities for training and professional development has the project provided?The following field days and media article have published for the benefit of the growers. Traders Dispatch: Grant awarded to implement professional development program on pheromones. April 2018. NOVA University Network: Pollinators within IPM strategies for Agriculture. May 2018. The Prairie Star: What treatments best control economically-damaging canola insect pests? June 08, 2018. Traders Dispatch: Traders Dispatch: Tips to protect wheat midge parasitic wasps from insecticide spray. June 2018. Traders Dispatch: Traders Dispatch: A focused effort to manage wireworms in the Golden Triangle Area of Montana. July 2018. Traders Dispatch: Can we immunize the plants for defense against wheat stem sawfly attack? September 2018. Independent Observer: Biological control in plant pest management systems annual meeting. November 01, 2018. Traders Dispatch: Traders Dispatch: Valuable information shared at regional biological control meeting held in Montana. November 2018. Traders Dispatch: Survey and monitoring of wheat head armyworm by using pheromone traps. December 2018. Traders Dispatch: Efficacy of bio-pesticides for managing flea beetles on canola. February 2019. Montana IPM Bulletin: Management of wireworms: Present status. Spring 2019. Traders Dispatch: Fungus for managing wireworms on spring wheat in Golden Triangle region of Montana. May 2019. Traders Dispatch: A potential tool to manage wireworms in wheat and barley. August 2019. How have the results been disseminated to communities of interest?The results have been disseminated to the growers, stakeholders and extension agents through field days, workshops, and extension articles. ? What do you plan to do during the next reporting period to accomplish the goals?The project is finishing now.
Impacts
What was accomplished under these goals?
To manage wireworm population pulses were studied. In 2018, trap crop experiment was established at 4 sites, where Banner peas were used as border cropping in split plot design. Results indicated that at the site where wireworm pressure was highest, pea rows closer to wheat had more damage and hence less yield was noticed. Nevertheless, due to high wireworm dispersion, no significant effect was noticed in wheat yield and further exploration is required. Three field trials were established to examine the efficacy of intra-crop interplanting of sweet potato varieties, Ipomoea batatas (L.) Lamarck (Solanales: Convolvulaceae), on an oligophagous weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), planting a preferred variety, Beni-masari, together with a less preferred one, Kyushu 166. In the first experiment, Beni-masari was planted as a border around Kyushu 166 and this arrangement decreased tuber damage in the main crop (Kyushu 166), although damage reduction was not statistically significant from monoculture plantings of Kyushu 166. In the second experiment, both varieties were planted in plots spaced 3 m apart to test the attractiveness of Beni-masari to weevils from Kyushu 166. No attractive effects of Beni-masari were observed. In the third experiment, the two varieties were planted in separate plots that were contiguous to each other, and in this experiment Beni-masari preferentially attracted weevils away from Kyushu 166 within 3 m distance, and tuber damage in Kyushu 166 within that zone was reduced owing to the attractiveness of Beni-masari. We discuss the potential of the intra-crop interplanting in pest management.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2019
Citation:
Sharma A, Shrestha G, Reddy GVP. 2019. Trap Crops: How far we are from using them in cereal crops. Annals of the Entomological Society of America 112, 330-339
- Type:
Journal Articles
Status:
Published
Year Published:
2019
Citation:
Reddy GVP, Shrestha G, Sharma A, 2019. Special issue on the Application of Trap and Cover Crops in the Insect Pest Management. Editorial. Annals of the Entomological Society of America. 112, 293-294
- Type:
Journal Articles
Status:
Published
Year Published:
2019
Citation:
Ichinose K, Reddy, GVP, Shrestha G, Sharma A, Okada Y, Yoshida M, Sakai T. 2019. Interplanting Different Varieties of a Sweet Potato Crop to Reduce Damage by Oligophagous Insect Pests. Annals of the Entomological Society of America. 112,365-371.
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Progress 10/01/17 to 09/30/18
Outputs
Target Audience:The target audience is Montana wheat growers, consumers, stakeholders, Montana State University Extension Offices, and the Montana Department of Agriculture. Changes/Problems:There are no changes and problems occured during the period of this project. What opportunities for training and professional development has the project provided?The following field days and media article have published for the benefit of the growers. Traders Dispatch: Reoccurrence of new pest - pea weevil in Montana. April 2018. Traders Dispatch: Grant awarded to implement professional development program in pheromones. April 2018. Traders Dispatch: Impact of herbicide overuse on insect pests and their natural enemies in no-till farming. March 2018. Traders Dispatch: Irrigated spring wheat fields favor wheat midge and its parasitic wasp. March 2018. Traders Dispatch: Plant parasitic nematodes: A threat to crop production in Montana. March 2018. Traders Dispatch: Spring wheat variety performance summary in Montana. March 2018. Montana Ag Alerts: Reoccurrence of new pest - pea weevil in Montana. January 16, 2017. Traders Dispatch: Crucifer flea beetle and cabbage seedpod weevil incidence affected canola grain yield and quality. January 2018. How have the results been disseminated to communities of interest?The results have been disseminated to the growers, stakeholders and extension agents through field days and workshops. What do you plan to do during the next reporting period to accomplish the goals?The work on to import and establish effective natural enemies for wheat midge and wireworms and other important cereal, pulse and canola insect pests will be carried out. Similarly, additional work will be carried out to conserve natural enemies to increase biological control of target pests, augment natural enemies to increase biological control efficacy and evaluate environmental and economic impacts and raise public awareness of biological control. The results from this work will reported in the next reporting period.
Impacts
What was accomplished under these goals?
The effects of plant species richness on the function and stability of ecosystems have been an area of focus in recent decades. Arthropod community is one of the most important components in agroecosystems and can provide multiple ecosystem services, including biocontrol and pollination. In particular, species composition and biocontrol function can be sensitive to changes in plant species richness. Here, we designed 50 plots with five levels of plant species richness to examine arthropod distribution and composition over 4 yr. Arthropod richness was found to be positively correlated with plant species richness. High plant species richness can enhance the temporal stability of the arthropod community but can also lead to a decline in the population stability of some species. The species richness and biomass of environmentally friendly insects (EFI), such as honeybees, ants and flies, were found to be positively correlated with those of the natural enemies. As such, high levels of EFI could sustain food web robustness by serving as alternative prey/hosts for natural enemies. The mediation of EFI in the interaction between crops and pests has implications for successful biocontrol practices using natural enemies. Planting diverse plant species with a certain level of spatial turnover could benefit the biocontrol function of natural enemies and safeguard multiple ecosystem services.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2018
Citation:
Zhao, Z., C. Hui, G.V.P. Reddy, F. Ouyang, X. Men, and F. Ge. 2018. Plant species richness controls arthropod food web: Evidence from an experimental model system. Annals of the Entomological Society of America, https://doi: 10.1093/aesa/say038.
- Type:
Books
Status:
Published
Year Published:
2017
Citation:
Reddy, G.V.P. 2017. Integrated Management of Insect Pests on Canola and Other Brassica Oilseed Crops. CAB International, Wallingford, UK, 408p.
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