WEED CONTROL WITH NATURAL PRODUCTS

NICK CHRISTIANS

IOWA STATE UNIVERSITY

www.hort.iastate.edu/gluten

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 CONTROL20 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?

Control

CGM

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 LawnCorn Weed BlockerEspoma OrganicWeed BanWOW! Hometown OrganicsJonathan Green Organic Weed Control Preen Vegetable Garden Weed PreventerProPacNaturO Brands.Cockadoodle DOO Organic Weed Control

PRODUCT NAMES

Renaissance All Natural FertilizersGard'n-Wise OrganicsScotts Turf Builder and Lawn ProDynaweedPremergeOrganic Weed-Stopper PlusA-Maize-NCONCERN 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 HYDROLYSATESUS 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

HYDROLYSATEUS PATENT 5,290,757

LIQUID GOLDENVIRONMENTAL FACTOR

ONTARIO, CANADA

HOW DOES IT WORK?

BRYAN UNRUHCELLULAR CHANGES IN

PERENNIAL RYEGRASS ROOTS ASSOCIATED WITH

THE ROOT INHIBITING COMPOUND ALANINYL-

ALANINE

OBJECTIVES

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

www.hort.iastate.edu/gluten