I used it years ago on Paspalum. It did the job but also killed the surrounding Kikuyu. I only spot sprayed but I thought after it looks as if I've used roundup.
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I used it years ago on Paspalum. It did the job but also killed the surrounding Kikuyu. I only spot sprayed but I thought after it looks as if I've used roundup.
Spot spray with Di-grass, if they are juvenile it will probably knock them with one hit but if bigger they will take repeat sprays. Depending on quantity it may pay just to dig the bigger ones out.
SIMZINE is not a weed killer, it's a water mobile soil steriliser. Its also supposedly carcinogenic. No way I'd even consider using it!
Water mobile = it travels in the soil with ground water/rainfall. As in, it travels under fences in the ground water into that yard next door with the kids playing in the mud.
I wouldn't want that on my conscience!
I would better describe Simazine as a pre-emegent herbicide in that it inhibits (some) plants seeds germinating/growing, but I would not agree that it is a soil sterilant.
It is true that it is 'water mobile' and in agricultural use relies on rainfall to leach it below the plant grow zone prior to growing a susceptible crop the following year.
It is used in our farming practice to inhibit weed growth in broad bean crops which are harvested as dry seed for high protein stock food. The bean seeds are sown and paddock immediately sprayed with Simazine. Bean seedling grow up through it will no ill effects, weeds do not.
I would also agree that it is not really a chemical suited for domestic/backyard use -- and I doubt if it is registered for such use. Also look at the withholding periods when grazing animals are involved --> possible residues in animal products.
Note that most 'garden vegetables' are highly susceptible to the effects of Simazine, so any residues (or movement in soil) --> veggies won't grow there.
I all cases read the label and follow the instructions.
I wouldn't want that on my conscience![/QUOTE]
Just found this thread while looking for Simazine suppliers. Noticed the comments about granular products being difficult to mix and clogging the sprayer... I am just about to switch to granular, was hoping that it would make it easier since I wouldn't have to buy spray dye separately as Hi-Light Blue granules already contain the dye. Then mixing it with a product like Simazine will give the same effects as if I was using Yates Path Weeder (which is not cheap to buy in 1L concentrate, and only mixes 5L of sprayable product!)
I have found another residual/pre-emergent product called Trimac, available in 1kg bag, prepackaged granules in 10x 100g packs, but it's not cheap either at $198. :eek: (100g pack mixes 100L though.)
Specialist Sales only have Simazine in 15kg bulk lots the last time I checked, not sure on price or the mix ratio but no doubt expensive and way more than I need...
Anyway - who else has used granular products? Do you still use them, would you recommend them? Or are they a bit of a hassle for mixing small quantities (5, 10, 15L)?
Suggest you have a read of the label to see how apprpriate it is before jumping into this product. http://www.macspred.com.au/images/st...rial_label.pdf
The issues (to me) include
1. Packaging is in 100gm (100 litre mix) WATER SOLUBLE packets which are designed to be tossedin entirety into tank.
2. Product contains some sulphuron methyl (Same as Brushoff) so can have similar effects on non target plants.
3. Water mobile in soil-- they advise on leaving safety margins between sprayed areas and non target areas.
4. Withholding periods -- any sprayed vegetation not yo be grazed or used for stock food -- residues & toxicity??
5. Incompatible products - can't be mixed with Roundup Powermax or Glyphisate 540 products.
So read the label and do your research first is my honest opinion.
I suspect it's really an 'industrial' rather than domestic situation product.
Joe
I have found another residual/pre-emergent product called Trimac, available in 1kg bag, prepackaged granules in 10x 100g packs, but it's not cheap either at $198. :eek: (100g pack mixes 100L though.)
Specialist Sales only have Simazine in 15kg bulk lots the last time I checked, not sure on price or the mix ratio but no doubt expensive and way more than I need...
Anyway - who else has used granular products? Do you still use them, would you recommend them? Or are they a bit of a hassle for mixing small quantities (5, 10, 15L)?[/QUOTE]
I'm still using granular simazine as I gave up on the search. The chem boys here said to premix in a bucket well ahead of time to ensure full breakdown of the granules and that seems to work. You have to thoroughly wash the sprayer after. I still think the process is a PITA and would prefer a liquid, but I don't use a lot of path weeder and simazine stores easily.
Decontamination of equip after these chemicals is very important.
It's aways advisable to follow the label instructions for decontamination (eg if detergent, bleach etc necessary) as a simple water wash-up will often not be sufficient. Some of these herbicides will tenaciously 'stick' to plastics etc in the equipment, which water alone will not dislodge.
Joe