Water quality rules adopted in 2001 in San Diego, California, created new requirements for greenhouse and plant nursery growers to manage surface run-off that could potentially affect drinking water, recreational locations, and wildlife habitat. A "Run-off and Non-Point Source Pollution Self-Assessment for Greenhouse and Container Nurseries" was developed as a series of worksheets that translated technical information for growers to meet legal requirements, maintain their property value, and enhance the quality of their environment. Self-assessment results determined a need for additional training on run-off management and prevention pollution through more site-specific fertilization and pest management techniques based on routine monitoring.
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DeJong, D., Delate, K., Mellano, V. J., Robb, K. L., & Shaw, D. A. (2009). The Use of a Non-Point Source Pollution Self-Assessment for Greenhouse and Nursery Operators in California. The Journal of Extension, 47(1), Article 7. https://tigerprints.clemson.edu/joe/vol47/iss1/7