Alfalfa Management Guide

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Группа авторов. Alfalfa Management Guide

Table of Contents

List of Tables

List of Illustrations

Guide

Pages

Alfalfa Management Guide

Acknowledgments

Establishment

Select a field carefully. Soil type, drainage, and slope

Control perennial weeds

Autotoxicity

Test soil before planting

Apply lime before seeding

Nutrient needs during establishment

Select a good variety

Yield potential

Persistence

Winterhardiness

Fall dormancy

Disease resistance

Intended use

Planting. Time of seeding

Field preparation

Seed inoculation

Seeding depth and rate

Seeding with and without a companion crop

Seeding equipment

Reduced tillage and no-till planting

Production

Fertilize annually. Determine needs

Nitrogen

Phosphate and potash

Secondary nutrients

Micronutrients

Irrigation

Irrigation scheduling principles:

Manure management

Weed management

Weed management before planting

Weed management in the seeding year

Direct-seeded plantings: Preplant-incorporated treatments

Direct-seeded plantings: Postemergence treatments

Companion-crop seeded plantings

Weed management in established alfalfa

Disease management

Anthracnose

Aphanomyces root rot

Bacterial wilt

Common leaf spot and lepto leaf spot

Fusarium wilt

Phytophthora root rot

Root-lesion nematodes

Sclerotinia

Spring black stem

Summer black stem

Verticillium wilt

Insect management. Alfalfa blotch leafminer

Alfalfa weevil

Aphids

Blister beetles

Clover leaf weevil

Clover root curculio

Grasshoppers

Plant bugs

Potato leafhoppers

Spittlebugs

Variegated cutworm

When to rotate from alfalfa

Harvest

Forage quality

What quality forage is needed?

Plant growth and forage quality

Harvest management

Cutting schedule

Maximum persistence

High quality

High yield and high quality

Fall management

Uncontrollable environmental factors

Controllable factors

Hay and silage management

Losses

Quality changes

Minimizing losses

Quality losses during hay-making

Quality losses during silage-making

Feeding considerations of hay and haylage

Forage quality terms

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Authors

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Glen Shewmaker

Extension agronomist University of Idaho

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