Browsing by Author "Haymaker, Joseph"

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    2021 Virtual Eastern Shore Agricultural Conference and Trade Show
    Pittman, Theresa; Deitch, Ursula T.; Reiter, Mark S.; Singh, Vijay; Mason, John; Duerksen, Keren; Haymaker, Joseph; Doughty, Helene; Holshouser, David Lee, 1963-; Langston, David B.; Flessner, Michael; Rideout, Steven L.; Thomason, Wade E.; McCullough, Chris T.; Sutton, Kemper L.; Bekelja, Kyle; Kuhar, Thomas P.; Richardson, Bruce; Harper, Robert; Richardson, Brett; Shockley, Bill (Virginia Cooperative Extension, 2021-03-12)
    Join us for the 2021 virtual Eastern Shore Agricultural Conference and Trade Show! Hear updates and continuing education presentations that are pertinent to Eastern Shore of Virginia growers.
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    Cover crop termination options and application of remote sensing for evaluating termination efficiency
    Kumar, Vipin; Singh, Vijay; Flessner, Michael L.; Haymaker, Joseph; Reiter, Mark S.; Mirsky, Steven B. (Public Library of Science, 2023-04-20)
    Efficient termination of cover crops is an important component of cover crop management. Information on termination efficiency can help in devising management plans but estimating herbicide efficacy is a tedious task and potential remote sensing technologies and vegetative indices (VIs) have not been explored for this purpose. This study was designed to evaluate potential herbicide options for the termination of wheat (Triticum aestivum L.), cereal rye (Secale cereale L.), hairy vetch (Vicia villosa Roth.), and rapeseed (Brassica napus L.), and to correlate different VIs with visible termination efficiency. Nine herbicides and one roller-crimping treatment were applied to each cover crop. Among different herbicides used, glyphosate, glyphosate + glufosinate, paraquat, and paraquat + metribuzin provided more than 95% termination for both wheat and cereal rye 28 days after treatment (DAT). For hairy vetch, 2,4-D + glufosinate and glyphosate + glufosinate, resulted in 99 and 98% termination efficiency, respectively, followed by 2,4-D + glyphosate and paraquat with 92% termination efficiency 28 DAT. No herbicide provided more than 90% termination of rapeseed and highest control was provided by paraquat (86%), 2,4-D + glufosinate (85%), and 2,4-D + glyphosate (85%). Roller-crimping (without herbicide application) did not provide effective termination of any cover crop with 41, 61, 49, and 43% termination for wheat, cereal rye, hairy vetch, and rapeseed, respectively. Among the VIs, Green Leaf Index had the highest Pearson correlation coefficient for wheat (r = -0.786, p = <0.0001) and cereal rye (r = -0.804, p = <0.0001) with visible termination efficiency rating. Whereas for rapeseed, the Normalized Difference Vegetation Index (NDVI) had the highest correlation coefficient (r = -0.655, p = <0.0001). The study highlighted the need for tankmixing 2,4-D or glufosinate with glyphosate for termination instead of blanket application of glyphosate alone for all crops including rapeseed and other broadleaf cover crops.
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    Experiential Learning in the Time of COVID Pandemic: Study in the USA-Southern California and Arizona
    Abaye, Azenegashe Ozzie; Reiter, Mark S.; Ashford-Kornburger, Dana; Ziegler, Peter; Badon, Thomas; Mason, John; Wilbur, Jessica; Haymaker, Joseph (2022-11-07)
    The COVID pandemic has had an impact on higher education, especially on experiential learning opportunities. Travel restrictions due to the COVID-19 pandemic resulted in the cancelation of several study-abroad programs. To provide the much-needed in-person experience, we created an experiential learning course titled “Study in the USA" structured to accommodate variable domestic destinations. The key driver of the course is experiential learning, hands-on and face-to-face experience with industries involved in food production. The purpose of this course is to provide students with new insights through comparison and contrasting regional production practices across the United States. Specific objectives of the course are: 1) Provide students with a baseline understanding of experiential learning so they can apply academic learning in work settings appropriate for their career plans, 2) Engage students in developing skills and competencies relating to producing food in the time of COVID-19, and climate change, and 3) Develop a deeper understanding of challenges faced by people who are engaged in all aspects of agricultural enterprises. Overall, the course provided far more than academics to help students recover from the pandemic, it provided a perfect platform for social interaction which was missing for several years due to the COVID pandemic.