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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.

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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.

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.

Excerpt from The Rothamsted Experiments on the Growth of Wheat, Barley, and the Mixed Herbage of Grass Land Having had occasion to study somewhat closely the work of the Rothamsted investigators, it occurred to me that their valuable memoirs, dealing as they so largely do with actually ascertained results, might be advantageously condensed into the form of a text-book. Hence arose the present volume which, though it is concerned with a portion only of the many questions that have been brought within the range of experimental inquiry at Rothamsted, yet deals with subjects of first class importance, equally in their scientific bearing as in their economic aspect. To the student the discussion of concrete results should prove at least as useful as the consideration of abstract assertions, whilst it is possible that it may be even more suggestive. In the endeavour to make each subject as far as possible complete in itself, a certain amount of repetition has been unavoidable. Many questions, again, which are but lightly touched upon in these pages, are more fully dealt with in other of the Rothamsted memoirs than those which the writer has laid under contribution. Even as this work is passing through the press a fresh memoir issuing from Rothamsted throws further light upon the classical inquiry as to the sources of the nitrogen of vegetation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Why is there a cow on the front cover of this book? This is a book about agriculture, and farm animals have become unfashionable in some quarters. Cows, it turns out, are responsible for global warming, climate change, and so, no doubt, rising sea levels and chemtrails. But any real farmer, from any time in history, knows that this is not true. Animals have been around forever. Animals are a vital part of an insanely complex living system. Anyone who knows the basics of regenerative agriculture understands this. Albert Howard spent years studying and using the methods of traditional Asian agriculture, and shows in this book that the fertility and health of the soil depend on humus, in the production of which animal materials play an vital role. A healthy soil needs animal inputs. Animals in agriculture are central; they're right in there with fungi. This message is not welcomed by those who would feed the modern world a diet of plant-based, lab-grown food substitutes that have lists of ingredients as long as your arm, and are going to save the planet using gene-spliced soybeans and 3D printed pizzas. So, the cow and her calf are on the cover to redress the balance, and also to feature as one of the stars of this book (along with sugar cane, waste pits, and public servants). She was the photogenic one. Albert Howard's text has been thoroughly re-edited in this new version of his book. The habit, common at the time, of using long paragraphs is not preferred by modern readers, so the text has been extensively 'reparagraphed'. Grammar has been tweaked, and styles have been adopted. Headings have been added, infinitives unsplit. The changes made have been to make things more comfortable for modern eyes and tastes. The sense and intention of the author has not been altered at all, of course. We hope that Albert Howard would approve of this reworking of his book. His ideas are more important than ever. Wendell Berry wrote in The Last Whole Earth Catalog "Howard's discoveries and methods, and their implications, are given in detail in An Agricultural Testament. They are of enormous usefulness to gardeners and farmers, and to anyone who may be interested in the history and the problems of land use. But aside from its practical worth, Howard's book is valuable for his ability to place his facts and insights within the perspective of history. This book is a critique of civilisations, judging them not by their artefacts and victories, but by their response to the sacred duty of handing over to the next generation, unimpaired, the heritage of a fertile soil."

A comprehensive book on basic processes of soil C dynamics and the underlying factors and causes which determine the technical and economic potential of soil C sequestration. The book provides information on the dynamics of both inorganic (lithogenic and pedogenic carbonates) and organic C (labile, intermediate and passive). It describes different types of agroecosystems, and lists questions at the end of each chapter to stimulate thinking and promote academic dialogue. Each chapter has a bibliography containing up-to-date references on the current research, and provides the state-of-the-knowledge while also identifying the knowledge gaps for future research. The critical need for restoring C stocks in world soils is discussed in terms of provisioning of essential ecosystem services (food security, carbon sequestration, water quality and renewability, and biodiversity). It is of interest to students, scientists, and policy makers.

This publication presents the latest research in perennial crop breeding and programmes, and provides direction on where the field of perennial crop is heading. Many production systems and agricultural practices are no longer sustainable today as their effects on soils, water, biodiversity, and livelihood are significant. Mainstreaming the use of perennial crops into current practices can contribute to stabilize fragile soils and maintain natural processes essential to obtain stable and high yields. To face the challenges and risks of the twenty-first century, increasing the perenniality of crops and agricultural systems should become a larger research, development and policy focus.