This Blog section is for news about Rainbow & Brown products and their application but especially new products.
18 Jun
Working out Your Spray Rates with our easy-to-use Spray Conversion Calculator
Calculating spray rates can be a real head-scratcher. So, we’ve made a simple tool to help take the hassle out of it.
Our new Spray Rate Conversion Calculator is free and easy to access on our website.
This calculator helps you quickly figure out:
- How much herbicide to add to your tank (in mL)
- What rate to mix it at (mL per litre)
- Or how much area your sprayer needs to cover
You simply enter the values you already know and the calculator does the rest.
There are two options in the tool:
- Option A – if you know the area your sprayer covers
- Option B – if you know the herbicide rate you’re mixing (mL/L)
To access the calculator, click here. We recommend bookmarking it if you think it’s something you’ll use regularly.
26 Oct
0
646
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
0
2131
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
0
3420
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..
Leave a Comment