You might want to read this before investing in corn gluten for garden use. http://www.puyallup.wsu.edu/~Linda Chalker-Scott/Horticultural Myths_files/Myths/Corn gluten.pdf
Jimmyq, Corn Gluten IS regisitered in Canada and has been for at least 3 years. One Example - Amaizeingly Green PCP#28647. They are also registered as a WEED & FEED product with CFIA. www.amaizeinglygreen.com Link to PMRA LABEL SEARCH http://pr-rp.pmra-arla.gc.ca/portal/..._schema=PORTAL Colin
Corn gluten meal does apparently have temporary registration. with limited purpose and effect. "Prairie Gold 60% Corn Gluten Meal (TGAI) and associated end-use product, TurfMaize, have been granted temporary registrations for use as pre-emergence weed seed germination inhibitors for dandelions (Taraxacum officinale) and smooth crabgrass (Digitaria ischaemum) on established residential lawns where the predominant grass is Kentucky bluegrass," Kentucky bluegrass is not a common grass in the GVRD, the local climate is too damp and rainy for it. Crabgrass also is not a common weed locally as it is too damp and rainy.
Crabgrass?...tell that to the bed alongside my driveway please. I've been fighting it for years. I think it would regard corn gluten as prey! It might be Alaskakingcrabgrass that I have - this is the left coast. I think I'll spray it generously with butter & garlic. Maybe it will turn red on the outside, white on the inside & become delicious. Sorry...I'm having one of my turns. Weeds sometimes have that effect on me. gb.
Do you ever feel like people only tell you half the story... Please visit the PMRA website and type 'corn gluten' in the Search Full Contents of E-Labels section. 8 companies with CGM registrations come up, including Scotts Canada. These are not temporary registrations and are used on perennial ryegrass as well as Kentucky Blue. The registrations limit the effectiveness of CGM to control dandelions and crabgrass because it costs money to do research and efficacy tests, etc... Having said that, Iowa State research has proven CGM to be a pre-emergence herbicide on (albeit with varying degrees of effectiveness): -annual bluegrass -barnyardgrass -black medic -bermudagrass -black nightshade -buckhorn -catchweed bedstraw -clover -curly dock -creeping bentgrass -giant foxtail -green foxtail -lambsquarter -orchardgrass -purslane -redroot pigweed -shattercane -smartweed -velvetleaf -wolly cupgrass Jimmyq, you are correct in saying that rainy, wet conditions are not the optimal conditions for using CGM as a herbicide. CGM releases amino acids and proteins into the soil the essentially dry out any geminating seed. Too much water will counteract the effect. One last note...keep in mind that there are numerous grades of CGM. CGM bought at a feed store may not have the high protein levels (60% or higher) required to be an effective herbicide. Also, the high moisture content will mean that the product will go moldy quickly and may not last a season in the garage. Colin
Please leave the insults at home IE the intimation that I am telling half truths (although I do admit after searching around more on the pmra site this morning I am not sure where I came up with the 'temporary' part), what I posted was a copy and paste from the PMRA website. It says that the crabgrass can be controlled in a kentucky bluegrass lawn, not that it will control kentucky bluegrass. My discussion about a wet, rainy climate did not say that it would limit the effectiveness of the CGM, it said that crabgrass doesnt commonly grow in the vancouver area. What research in any place (IE Iowa state) says about a pesticide has nothing to do with it being registered for such use in Canada or not. 7 of the 15 products registered are available on a domestic label, meaning homeowners can purchase them. If anyone wants to see the search results for domestic (homeowner purchaseable) or other pesticide products registered for use in Canada, click this link: http://pr-rp.pmra-arla.gc.ca/portal/page?_pageid=34,17551&_dad=portal&_schema=PORTAL edit: I finally figured out where I got the initial quote from: http://www.pmra-arla.gc.ca/english/pdf/reg/reg2003-09-e.pdf
Sorry, I'm from Toronto... it's not my intention to be aggressive, merely assertive (I guess I can't help myself).
