Dr. Leach joined the OSU Entomology Department on January 3, 2022 after completing a postdoctoral research associateship at Purdue University. Leach is an applied entomologist specializing in the development of integrated pest management in specialty cropping systems, broadly interested in optimizing agricultural production systems, including understanding the biology and ecology of these systems and the tactics that can improve their efficiency.
1. Leach, H. and A. Leach. 2020. Seasonal phenology and activity of spotted lanternfly (Lycorma delicatula) in eastern U.S. vineyards. J. Pest Sci. https://doi.org/10.1007/s10340-020-01233-7
2. Leach, A., S. Reiners, and B. A. Nault. 2020. Challenges in integrated pest management: A case study of onion thrips and bacterial bulb rot in onion. Crop. Protect. 133: 105123 https://doi.org/10.1016/j.cropro.2020.105123
3. Leach, A., F. Hay, R. Harding, K. Damann, and B. A. Nault. 2020. Relationship between Stemphylium vesicarium and onion thrips (Thrips tabaci) in the development of Stemphylium leaf blight disease. Ann. App. Bio. 176(1): 55-64. https://doi.org/10.1111/aab.12558
4. Leach, A., M. Fuchs, R. Harding, and B. A. Nault. 2019. Iris yellow spot virus prolongs the adult lifespan of its primary vector, onion thrips (Thrips tabaci). J. Insect Sci. 19(3): 8; 1–4. https://doi.org/10.1093/jisesa/iez041
5. Leach, A., C. A. Hoepting, and B. A. Nault. 2019. Grower adoption of insecticide resistance management practices increase with extension‐based program. Pest. Mgmt. Sci. 75: 515-526. https://doi.org/10.1002/ps.5150
6. Leach, A., M. Fuchs, R. Harding, R. Schmidt-Jeffris, and B. A. Nault. 2018. Importance of transplanted onions contributing to late-season iris yellow spot virus epidemics in New York. Plant Dis. 102(7): 1264-1272. https://doi.org/10.1094/PDIS-06-17-0793-RE
7. Leach, A., S. Reiners, M. Fuchs, and B. A. Nault. 2017. Evaluating integrated pest management tactics for onion thrips and pathogens they transmit to onion. Agric., Ecosyst. & Environ. 250: 89–101. https://doi.org/10.1016/j.agee.2017.08.031
MANUSCRIPTS IN REVIEW/PREPARATION
1. In revision. Leach, H. and A. Leach. Tracking an invader: characterizing the spatial distributions of spotted lanternfly (Hemiptera: Fulgoridae) in Pennsylvania vineyards. Sci. Reports
2. In prep. Leach, A., S. Reiners, and B. A. Nault. Effect of onion (Allium cepa) plant growth on onion thrips (Thrips tabaci) colonization.
1. Leach, A., E. Long, and L. Ingwell. 2020. Seedling Damage by Maggot Pests. Purdue University. Vegetable Crops Hotline. Issue 673.
2. Ingwell, L., A. Leach, and D. Egel. 2019. Whitefly Identification and Control. Purdue University. Vegetable Crops Hotline. Issue 664.
3. Hayden, Z., A. Leach, and B. Nault. 2019. Nitrogen: Is less more? Studies in MI and NY highlight potential for reducing nitrogen rates on muck soils. Onion World 35(5):14-16.
4. Leach, A., B.A. Nault, and C. Hoepting. 2018. Insecticide Sequences to Manage Onion Thrips in Onion in 2018. Cornell Cooperative Extension, Cornell Vegetable Program. VegEdge 14 (10) 8-9.
5. Leach, A., S. Reiners, M. Fuchs, and B. A. Nault. 2018. Unravelling the interactions among variety, fertility, yield, onion thrips and diseases, and implications for improved management practices. Empire State Producers Expo proceedings.
6. Leach, A., B.A. Nault, and C. Hoepting. 2017. 2017 Insecticide treatment options for onion thrips management in onion. Cornell Cooperative Extension, Cornell Vegetable Program. VegEdge 13 (12) 8-9.
7. Leach, A. 2017. Optimizing thrips control. Onion World 33(3) 17-19.
8. Leach, A., B. A. Nault and S. Reiners. 2016. Evaluating a three-component IPM program for onion thrips. Empire State Producers EXPO proceedings.