1. Dep. of Entomology, Merkle Lab. The Pennsylvania State Univ. University Park PA 16802 USA
2. USDA‐ARS Pasture Systems & Watershed Management Research University Park PA 16802 USA
3. Dep. of Agricultural and Biological Engineering The Pennsylvania State Univ. 252 Agricultural Engineering Building University Park PA 16802 USA
4. Dep. of Plant Science The Pennsylvania State Univ. 102 Tyson Building University Park PA 16802 USA