Many articles in UCNFA News (formerly (CORF News), which are available at  http://ucanr.org/sites/UCNFA/ 

Newman, J., S. Mangiafico, D. Zurawski, A. Ellis, K.Gilbert, D. Merhaut, J. Gan, L. Wu, J. Lu, M. Mochizuki, R. Evans, B. Faber. 2009. Nurseries Implement Management Practices to Protect Water Quality. Farm Water Quality News. 2(1) 6-7. http://ceventura.ucdavis.edu/newsletterfiles/newsletter1692.htm