WEED CONTROL WITH NATURAL PRODUCTS NICK CHRISTIANS IOWA

WEED CONTROL WITH NATURAL PRODUCTS NICK CHRISTIANS IOWA STATE UNIVERSITY

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THE IDEA CAME FROM AN UNRELATED STUDY ON GRASS DISEASES

FIVE CORN COMPONENTS TESTED • • • CORN MEAL INDUSTRIAL CORN STARCH DRIED CORN GERM CORN SEED FIBER CORN GLUTEN MEAL

CORN GLUTEN MEAL • • BYPRODUCT OF WET MILLING 60% PROTEIN BY WEIGHT 10% NITROGEN BY WEIGHT SOLD AS A FEED MATERIAL FOR CATTLE, POULTRY, FISH, AND DOGS

COULD IT BE USED IN TURF AS A NATURAL FERTILIZER AND AS A WEED CONTROL FOR ANNUALS, LIKE CRABGRASS?

FIELD TESTING BEGAN IN LATE 1980’S EXCELLENT FERTILIZER GOOD WEED CONTROL 20 LBS/1000 SQ. FT. STANDARD PROGRAM: 20 LBS IN SPRING AND 20 LBS IN LATE SUMMER TO EARLY FALL

CONTROL OF ANNUALS • APPROXIMATELY 60% FIRST YEAR • 80% + IN SECOND YEAR • 90% + IN THIRD YEAR

HOW ABOUT PERENNIAL BROADLEAVES?

CGM Control

CONTROL

CONTROL

US PATENT 5, 030, 268 PREEMERGENCE WEED CONTROL USING CORN GLUTEN MEAL

WEED SPECTRUM • • ANNUAL BLUEGRASS BLACK MEDIC BUCKHORN PLANTAIN LAMBSQUARTERS DANDELION FOXTAIL PURSLANE REDROOT PIGWEED

STRAWBERRIES

GARDENING

OTHER CROPS • RADISHES • ONIONS • GARLIC • SAFFRON • HERBS • GRAPES

PRODUCT NAMES Safe Lawn Corn Weed Blocker Espoma Organic Weed Ban WOW! Hometown Organics Jonathan Green Organic Weed Control Preen Vegetable Garden Weed Preventer Pro. Pac Natur. O Brands. Cockadoodle DOO Organic Weed Control

PRODUCT NAMES Renaissance All Natural Fertilizers Gard'n-Wise Organics Scotts Turf Builder and Lawn Pro Dynaweed Premerge Organic Weed-Stopper Plus A-Maize-N CONCERN Weed Prevention Plus

WHY DOES IT WORK?

DIANNA LIU • SOLUBLIZE CORN GLUTEN MEAL • HPLC • SCREENED 53 METHODS • CORN GLUTEN HYDROLYSATE

PREEMERGENCE WEED CONTROL USING PLANT GLUTEN HYDROLYSATES US PATENT 5, 290, 749

DIPEPTIDES • • • Glutaminyl-glutamine (Gln-Gln) Alaninyl- asparagine (Ala-Asn) Alaninyl-glutamine (Ala-Gln) Glycinyl-alanine (Gly-Ala) Alaninyl-alanine (Ala-Ala)

PREEMERGENCE WEED CONTROL USING DIPEPTIDES ISOLATED FROM CORN GLUTEN HYDROLYSATE US PATENT 5, 290, 757

LIQUID GOLD ENVIRONMENTAL FACTOR ONTARIO, CANADA

HOW DOES IT WORK?

BRYAN UNRUH CELLULAR CHANGES IN PERENNIAL RYEGRASS ROOTS ASSOCIATED WITH THE ROOT INHIBITING COMPOUND ALANINYLALANINE

OBJECTIVES • TO STUDY MORPHOLOGICAL AND ANATOMICAL CHANGES IN ROOT CELLS OF PERENNIAL RYEGRASS PLANTS TREATED WITH ALANINYL-ALANINE

www. hort. iastate. edu/gluten