Bøger af George Paul Wolf

This seminal work from 1936 explores the role of phosphorus in the soil and its importance for plant growth. Wolf's research helped establish the importance of organic forms of phosphorus, which can be more easily accessed by plants than inorganic forms. His work continues to influence the field of soil science today. This edition includes a new foreword on the history of agricultural research and its impact on modern farming practices.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.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.