This study of irrigation water requirements for citrus and avocado trees in San Diego County, California, conducted in the 1920s, remains a valuable reference today. The data and analysis provided in this book are essential for anyone involved in the cultivation and management of these crops.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

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