Research Publications

Recent publications (2010 - Present)

de Koff, J.P., and T. Broyles. 2019. Extension agents' perceptions of climate change and training needs. Natural Sciences Education 48:1-9. doi:10.4195/nse2019.01.0001.

Tetteh, E., J.P. de Koff, B. Pokharel, R. Link, and C. Robbins. 2019. Effect of winter canola cultivar on seed yield, oil, and protein content. Agron. J. 111:1-10. doi:10.2134/agronj2018.08.0494

Illukpitiya, P., and J.P. de Koff. 2019. An economic assessment of nutrient removal from switchgrass production. Research in Applied Economics 11(2):26-38. doi: 10.5296/rae.v11i2.14998

Hui, D., C.-L. Yu, Q. Deng, P. Saini, K. Collins, and J. de Koff. 2018. Weak effects of biochar and nitrogen fertilization on switchgrass photosynthesis, biomass, and soil respiration. Agriculture 8:1-12. http://dx.doi.org/10.3390/agriculture8090143

Li, J. S. Jian, J.P. de Koff, C.S. Lane, G. Wang, M.A. Mayes, and D. Hui. 2018. Differential effects of warming and nitrogen fertilization on soil respiration and microbial dynamics in switchgrass croplands. GCB Bioenergy 1-12. doi: 10.1111/gcbb.12515

de Koff, J.P. 2017. Drones in Extension programming: Implementation of adult and youth activities. Journal of Extension 55(6):6FEA6. Available at: https://www.joe.org/joe/2017december/pdf/JOE_v55_6a6.pdf

de Koff, J.P., J.C. Ricketts, C. Robbins, P. Illukpitiya, and A. Wade. 2017. Meeting stakeholder energy technology education needs using a mobile demonstration. Journal of Extension 55(6):6FEA8. Available at: https://www.joe.org/joe/2017december/pdf/JOE_v55_6a8.pdf

Saini, P., J.P. de Koff, A. Allison, and C. Hamilton. 2017. Changes in lignocellulosic polymers, carbon and energy in switchgrass for bioenergy production. Agronomy Journal 109:1-9. doi:10.2134/agronj2017.02.0063

Aziz, A., F. Tegegne, J.P. de Koff, and R. Wiemers. 2017. Biofuel training workshops for diverse stakeholders ranging from pre-college students to educators. Natural Sciences Education 46. doi:10.4195/nse2016.11.0033

Akinya, A., P. Illukpitiya, and J.P. de Koff. 2016. Economic analysis of small scale on-farm production of biodiesel and vegetable oil for industrial use from winter oilseed crops. Journal of Global Agriculture and Ecology 5(1):19-29.

de Koff, J.P., and A. Allison. 2015. Changes in nutrient characteristics of switchgrass for bioenergy. Agronomy Journal 107:2401-2409.

de Koff, J.P., P.A. Moore, Jr., R.D. Williams, R. Young, and P.J.A. Kleinman. 2013. Utilizing water treatment residuals to reduce phosphorus runoff from biosolids. J. Environ. Sci. and Eng. A 2:405-417.

de Koff, J.P., P.A. Moore, Jr., S.J. Formica, M. Van Eps, and P.B. DeLaune. 2011. Effects of pasture renovation on hydrology, nutrient runoff, and forage yield. J. Environ. Qual. 40:320-328.

de Koff, J.P., B.D. Lee, R.S. Dungan, and J.B. Santini. 2010. Effect of compost-, sand-, or gypsum-amended waste foundry green sands on turfgrass yields and nutrient content. J. Environ. Qual. 39:375-383.