Cooperative Extension Service - 2007 Harrelson, E. R., Hoyt, G. A., Havlin, J. L., & Monks, D. W. (2007). Effect of winter cover crop residue on no-till pumpkin yield. HortScience, 42(7), 1568–1574. Koenning, S. R., Morrison, D. E., & Edmisten, K. L. (2007). Relative efficacy of selected nematicides for management of Rotylenchulus reniformis in cotton. Nematropica, 37(2), 227–235.