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Wind River/Big Horn Water Advisory Group October 9, 2001 Dr. Alan Gray Powell R&E Center University of Wyoming

10/10/01


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Table of Contents

Wind River/Big Horn Water Advisory Group October 9, 2001 Dr. Alan Gray Powell R&E Center University of Wyoming

CROP WATER REQUIREMENTS AND OTHER INSIGHTS

POUNDS OR GALLONS OF WATER TO PRODUCE ONE POUND OF DRY MATTER

ALFALFA EACH T/A YIELD REQUIRES 5-6 INCHES H2O/ACRE FOOT

6 T/A YIELD REQUIRES 30-35 INCHES WATER/ACRE FOOT

SYSTEM EFFICIENCIES

IRRIGATION INSIGHTS FILL SOIL PROFILE IN SPRING (FALL?) “One Irrigation In The Fall Is Worth Two In The Spring”

ADEQUATE FERTILITY MAKES EFFICIENT USE OF WATER

MOST IRRIGATORS KNOW LITTLE ABOUT SOIL WATER CONDITIONS

WATER-HOLDING CAPACITIES

CHECKBOOK IRRIGATION SCHEDULING

WATER USE TERMS

SPRINKLERS DELIVER RIGHT AMOUNT MORE EFFECTIVELY THAN GRAVITY FURROW “PUMPING COSTS”

Irrigation System Pros/Cons

HEAVY SOILS & FLOOD IRRIGATION

Salty/Saline Soils

Alkali/Sodic Soils

REMEDIATION

Saline/Sodic Soils

Saline/Sodic Soils

FACTORS INFLUENCING CROP WATER USE IN WESTERN U.S.

Dairy Industry Growing But Consolidating

Number Of Milk Cows Declining But Increasing Production/Cow

Fluid Milk Demand Flat But Cheese Consumption Expanding

Bottled Water Competing With Other Beverages

Corn Silage Replacing Alfalfa In Eastern U.S.

DAIRY RATION - KANSAS

Dairies Are Moving From East To Midwest & From California To Intermountain West

Alfalfa Production Moving West From Eastern US

More Utah Hay Going To Idaho Instead Of California As Dairies Relocate

California: 70,000-80,000 Acres From Sugar Beets To Alfalfa In 2001 8-10 cuttings of alfalfa in Imperial Valley

California Dairies Are Increasing In Size

Dairies In Chino Until 2010

Land Rents For $1000/A/Crop

Imperial Valley Farmers Pay $14.50/Acre Ft For Water And Expect Increases of $0.50/Year In the Future

Energy Costs Impacting Farmers – Some Not Paying Water Bills Due To Farm Economy

Water Can Be Sold To San Diego @ $250/Acre Ft

California Water Situation

Fish & Wildlife Agencies Supporting Agriculture

California Summary

Forage Production/Hay & Pasture

Wyoming Opportunities/Trends

Author: Beth L. Gray


Wind/Bighorn River Basins
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