Alfalfa Management Guide. Группа авторов

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      Alfalfa Management Guide

       Authors

       Dan Undersander

      Extension agronomist, forages University of Wisconsin

       Mark Renz

      Extension agronomist, weed control University of Wisconsin

       Craig Sheaffer

      Research agronomist University of Minnesota

       Glen Shewmaker

      Extension agronomist University of Idaho

       Mark Sulc

      Extension agronomist

      The Ohio State University

      Acknowledgments

      The authors wish to thank reviewers from industry and various universities for their suggestions and everyone who supplied photos, including those not specifically mentioned:

      Steve Bicen, University of Wisconsin anthracnose; aphanomyces, roots; Fusarium wilt, roots; Phytophthora, roots; root assessment; verticillium wilt, root

      Dennis Cosgrove, University of Wisconsin autotoxicity

      Jim Ducy title page photo

      Del Gates, Kansas State University alfalfa weevils

      Craig Grau, University of Wisconsin aphanomyces, stunting; bacterial wilt, stunting; black stem, lesions; Fusarium wilt, field; Phytophthora, plant; sclerotinia; stand assessment; verticillium wilt, plants

      B. Wolfgang Hoffmann, University of Wisconsin alfalfa plant, page 1; alfalfa flowers

      Eric Holub, University of Wisconsin aphanomyces, seedling

      Jeffrey S. Jacobsen, Montana State University nutrient deficiencies—all except boron leaf (from Diagnosis of Nutrient Deficiencies in Alfalfa and Wheat)

      Pioneer Hi-Bred International, Inc. alfalfa closeups; cover photo ; cow; inside cover

      Lanie Rhodes, Ohio State University black stem, leaves; common leaf spot; lepto leaf spot

      Marlin E. Rice, Iowa State University alfalfa weevil, blister beetles; clover leaf weevils; grasshopper; pea aphids; plant bug, adults; potato leafhopper, adult; spittlebug; variegated cutworm

      Judy A. Thies, USDA-ARS root-lesion nematodes

      John Wedberg, University of Wisconsin alfalfa blotch leafminer; clover root curculio, damage

      Thanks also to Bruce Gossen and R´eal Michaud, research scientists at Agriculture and Agri-Food Canada, for their contributions to the disease maps.

      This publication is a joint effort of: University of Wisconsin-Extension, Cooperative Extension

      Minnesota Extension Service, University of Minnesota

       Iowa State UniversityCooperative Extension Service

       Published by:

      American Society of Agronomy, Inc.

      Crop Science Society of America, Inc.

      Soil Science Society of America, Inc.

      © 2015 by American Society of Agronomy, Inc., Crop Science Society of America, Inc., and Soil Science Society