This comprehensive work provides a detailed account of the experiments conducted at the Rothamsted Experimental Station in England, one of the most important sites in the history of agricultural science. Hall, Warington, and the Lawes Agricultural Trust Committee provide detailed analysis of the results of these experiments, which helped to shape our understanding of plant growth, soil health, and agricultural productivity. With detailed descriptions of the experimental methods and results, this book is an essential resource for anyone interested in the history of agriculture or the science of plant growth. 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.