The basic principle of tank mixing any products is to ensure they are chemically compatible and are to be targeted at the same part of the plant. There is little point in mixing a wetting agent which you wish to apply at a high water volume with coarse nozzles in order to wash the product into the soil in combination with a foliar feed which you need to apply at a low water rate with fine nozzles so it sticks to the leaf. Try to keep soil-targeted products in a separate mix from foliar-targeted mixes. For example, mixing Companion with Essential in your soil mix and Nitro 22 and TKO Phosphite in your foliar mix.
Once you have established that products can be mixed and are suitable for a tank mix it is important to add products in the correct order. Always add the product with the lowest pH first and then add each product in order of ascending pH until you add the product with the highest pH last, unless specifically advised to mix in a different order by your AGS Technical Representative.
pH values of the Growth Products range are listed below:
| Product | pH |
|---|---|
| GP TKO PHOSPHITE 0.26.29 | 7.3-7.8 |
| GP CAL-MAG 7.0.3 | 7 |
| GP QUICK RESPONSE 20.3.3 | 10 |
| GP NITRO 22.0.0 | 7.5 |
| GP K-BUILDER 7.2.21 | 11-12 |
| GP PH REDUCER | 1.5 |
| GP POT CARB MAX 0.0.25 | 12 |
| GP THE CLASSIC 18.3.6 SRN | 9 |
| GP XTRA IRON MAX 6.0.0 + 9% Fe | 1-2 |
| GP SAR ACTIVATOR SA | 3.5 |
| GP ESSENTIAL PLUS 1.0.1 | 5-6 |
| GP SIL-GUARD | 12 |
| GP COMPANION MICROB 2.1.3 | 5-6 |
| GP Hydro Max | 6 |
| GP HydroSmart Wetting Agent | 6-8 |
| GP Hydroflo Penetrant | 5-7 |
| GP SODIUM KNOCKOUT | 6 |
| REACT 15.2.10 | 4-5 |
| REACT 28.0.0 | 3-4.5 |
| IGNITION | 1.5 |
| BIO ATLANTIS LAM VITA | 5-6 |
| BIO ATLANTIS MICRO-GROW | 5-7 |
| BIO ATLANTIS SUPER FIFTY PRIME | 5-6.5 |
| SOLUNAR | 4.2 |
| FULVIC AND HUMIC ACID | 7-8.5 |
| GOEMAR SEAWEED | 3.5 |
| SUSTANE BOLSTER | 2 |
| Hydrozone | 7 |
| Wet X | 7 |
| Yara 18-9-9 | 6 |
| Yara 12-0-13 | 5.5-7.5 |
| Yara 2-7-14 | 5-7 |
- Half fill the spray tank with water first.
- Next add the lowest pH product.
- Agitate thoroughly to buffer the solution.
- Add products in the correct order from low to high pH, always agitating the spray tank to ensure thorough mixing.
- Do not use the same pump in different drums to avoid contamination.
- If in any doubt, test a mix using a ‘jar test’ on a small scale before adding to the spray tank.
