Advances in agronomy volume 05

433 87 0
Advances in agronomy volume 05

Đang tải... (xem toàn văn)

Tài liệu hạn chế xem trước, để xem đầy đủ mời bạn chọn Tải xuống

Thông tin tài liệu

ADVANCES IN AGRONOMY VOLUME V This Page Intentionally Left Blank ADVANCES IN AGRONOMY Prepared under the Auspices of the AMERICAN SOCIETY OF AGRONOMY VOLUME V Edited by A G NORMAN University of Mkhigan, Ann Arbor, Michigan ADVISORY BOARD J E ADAMS G W BURTON J E GIESEKING I J JOHNSON RANDALL JONES C E MARSHALL R Q PARKS K S QUISENBERRY 1953 ACADEMIC PRESS INC., PUBLISHERS NEW YORK Copyright 1953, by ACADEMIC PRESS INC 125 EAST2 STREET ~ ~ NEW YORX 10, N Y A11 Rights Reserved N o part ol this book may be reproduced in any form, by photostat, microfilm, or any other means, withozlt written permissiolt from the publishers Library of Congress Catalog Card Number : (50-5598) PRINTED IN THE UNITED STAlTB OD' AMERICA 'CONTRZBUTORS TO VOLUME V F E BROADBENT, Associate Professor of Soil Microbiology, Department of Agronomy, Cornell University, Ithaca, New Pork M B DAVIS,Chief, Horticulture Division, Central Experimental Farm, Department of Agriculture, Ottawa, Canada C H GOULDEN,Chief, Cereal Division, Experimental Fwm Service, Department of Agriculture, Ottawa, C a d I; W HURLBUT, Chairman, Department of Agricultural Engbaeerilzg, University of Nebraska, Lincoln, Nebraska M L JACKSON, Professor of Soils, University of Wiscomin, Madison, Wisconsin R W LEUKEL,Plant Pathologist, Division of Cereal Crops a w l Diseases, Burea

Ngày đăng: 08/05/2019, 14:34

Từ khóa liên quan

Mục lục

  • Advances in Agronomy, Volume V

  • Copyright Page

  • Contents

  • Contributors to Volume V

  • Preface

  • Chapter 1. A Half Century of Wheat Improvement in the United States

    • I. Introduction

    • II. Acreage, Yield per Acre, and Production in the United States

    • III. Improvement in Cultural Practices

    • IV. The Role of Improved Varieties

    • V. Improvements in Methods of Breeding Wheat

    • VI. Control of Diseases

    • VII. Control of Insect Pests of Wheat

    • Acknowledgments

    • References

  • Chapter 2. The Soil Organic Fraction

    • I. Introduction

    • II. Formation Processes

    • III. Distribution in Soils

    • IV. Composition

    • V. Physicochemical Properties

    • VI. Methods of Determination

    • VII. Contribution to Plant Nutrition

    • VIII. Conclusion

    • References

  • Chapter 3. Progress in Agricultural Engineering

    • I. Introduction

    • II. Concept of Agricultural Engineering

    • III. General Characteristics of Modern Farming

    • IV. Future Trends

    • V. Concluding Statements

    • References

  • Chapter 4. Chemical Weathering of Minerals in Soils

    • I. Introduction

    • II. Relative Stability of Minerals; Weathering Sequences and Indexes

    • III. Factors Affecting the Reaction Rates of Chemical Weathering

    • IV. Frequency Distribution of Minerals in Soils in Relation to Chemical Weathering

    • V. Weathering Release of Nutrient Elements from Soil Minerals

    • VI. Summary

    • Acknowledgments

    • References

  • Chapter 5. The Changing Pattern of Agronomy and Horticulture in Canada

    • I. Introduction

    • II. Cereals

    • III. Field Husbandry, Soils and Agricultural Engineering

    • IV. Forage Crops

    • V. Horticulture

    • VI. Tobacco

    • References

  • Chapter 6. Soil Management for Conservation and Productivity

    • I. Introduction

    • II. Factors Influencing Soil Structure

    • III. Soil Management for Structure Maintenance

    • IV. Influence of Rotations on Conservation and Productivity

    • V. Chemical Soil Conditioners

    • VI. Summary

    • References

  • Author Index

  • Subject Index

Tài liệu cùng người dùng

  • Đang cập nhật ...

Tài liệu liên quan