WEED CONTROL WITH NATURAL PRODUCTS

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WEED CONTROL WITH NATURAL PRODUCTS

• NICK CHRISTIANS
• IOWA STATE UNIVERSITY

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www.hort.iastate.edu/gluten
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THE IDEA CAME FROM AN UNRELATED STUDY ON GRASS
DISEASES
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FIVE CORN COMPONENTS TESTED

• CORN MEAL
• INDUSTRIAL CORN STARCH
• DRIED CORN GERM
• CORN SEED FIBER
• CORN GLUTEN MEAL

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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

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COULD IT BE USED IN TURF AS A NATURAL FERTILIZER
AND AS A WEED CONTROL FOR ANNUALS, LIKE CRABGRASS?
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FIELD TESTING BEGAN IN LATE 1980S
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
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CONTROL OF ANNUALS

• APPROXIMATELY 60 FIRST YEAR
• 80 IN SECOND YEAR
• 90 IN THIRD YEAR

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HOW ABOUT PERENNIAL BROADLEAVES?
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CGM
Control
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CONTROL
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CONTROL
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US PATENT 5,030,268 PREEMERGENCE WEED CONTROL
USING CORN GLUTEN MEAL
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WEED SPECTRUM

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

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STRAWBERRIES
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GARDENING
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OTHER CROPS

• RADISHES
• ONIONS
• GARLIC
• SAFFRON
• HERBS
• GRAPES

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PRODUCT NAMES
Safe Lawn Corn Weed Blocker Espoma Organic Weed
Ban WOW! Hometown Organics Jonathan Green
Organic Weed Control Preen Vegetable Garden Weed
PreventerProPac NaturO Brands. Cockadoodle DOO
Organic Weed Control
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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
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WHY DOES IT WORK?
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DIANNA LIU

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

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PREEMERGENCE WEED CONTROL USING PLANT GLUTEN
HYDROLYSATESUS PATENT 5,290,749
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DIPEPTIDES

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

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PREEMERGENCE WEED CONTROL USING DIPEPTIDES
ISOLATED FROM CORN GLUTEN HYDROLYSATEUS PATENT
5,290,757
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LIQUID GOLD

• ENVIRONMENTAL FACTOR
• ONTARIO, CANADA

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HOW DOES IT WORK?
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BRYAN UNRUH

• CELLULAR CHANGES IN PERENNIAL RYEGRASS ROOTS
  ASSOCIATED WITH THE ROOT INHIBITING COMPOUND
  ALANINYL-ALANINE

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OBJECTIVES

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

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www.hort.iastate.edu/gluten