This Blog section is for news about Rainbow & Brown products and their application but especially new products.
19 Nov
Tank cleaning between sprays is always important but no more important that if you have been using sulfonylurea herbicides like Rainbow & Brown’s MSF600. Even though this is on the labels it is worth reinforcing this.
The sulfonylurea herbicides, like MSF600, have an affinity for binding to plastic tank walls, filters and hoses and then if not cleaned properly can come away on the next use meaning you are getting what might be an undesirable herbicide in your next spray mix. This is particularly true with some emulsifiable concentrate herbicides or insecticides that might have toluene as an ingredient.
Clean your tank and spray gear carefully and in accordance with the label directions.
26 Oct
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Every NZ farm that uses hazardous substances needs an up-to-date chemical inventory and a current safety data sheet (SDS) for each product, kept where workers and emergency services can get to them. When WorkSafe checked 680 sheep, beef and dairy farms in late 2025, missing SDSs and inventories were behind 94% of the improvement notices issued. B..
08 Oct
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A wetter helps spray droplets spread across a leaf and stay there, instead of beading up and rolling off before the herbicide gets in. Use a non-ionic wetter for everyday spraying, and step up to an organosilicone wetter for waxy, hairy, dusty or stressed weeds. Always check the herbicide label first, because it tells you whether a wetter is need..
30 Sep
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Spring is the only time of year a wasp queen is on her own. She's out of hibernation, building a small nest by herself and feeding her first larvae with no workers to back her up. Catch her now and that nest never forms, which means no colony of thousands and no new queens next autumn.
✓Queens are active from early spring, roughly September to..
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