Plant Pathology - 1978 Benson, D. M., & Barker, K. R. (1978). Aldicarb and 1,2-dibromo-3-chloropropane as postplant treatments for control of nematodes on American boxwood, and Japanese and Chinese hollies. Plant Disease Reporter, 62(3), 209. Benson, D. M., Jones, R. K., & Daughtry, B. I. (1978). Ground covers that restrict disease spread. American Nurseryman, 148(4), 19. Clark, C. A., Sasser, J. N., & Barker, K. R. (1978). Elutriation procedures for quantitative assay of soils for Rhizoctonia solani. Phytopathology, 68(8), 1234. https://doi.org/10.1094/Phyto-68-1234 Upchurch, R. G., & Elkan, G. H. (1978). Ammonia assimilation in Rhizobium japonicum colonial derivatives differing in nitrogen-fixing efficiency. Journal of General Microbiology, 104(2), 219. https://doi.org/10.1099/00221287-104-2-219