Oregon Tilth, a private certifier in Salem, OR, certifies the majority of organic farms in Oregon. CSANR developed a snapshot for 2003. No breakdown by crop was available.
Chen, S., J.H. Harrison, W. Liao, D. C. Elliott, C. Liu, M. D. Brown, Z. Wen, A. E. Solana, R. L. Kincaid, D. J. Stevens. Dec. 2003. Final Technical Report PNNL-14495.
Study by Jennifer Reeve as part of MS degree, WSU Crops & Soils. Examined the effect of biodynamic preparations on wine grape, soil, and compost quality. Major professor Dr. John Reganold.
Dr. David James, Department of Entomology, WSU Prosser. Biological control and integrated pest management in irrigated horticultural cropping systems. Using and understanding natural enemies to provide biocontrol and reduce pesticide use in hops and grapes. HIPPO stands for Herbivore-Induced Plant Protection Odor.