![]() Let’s say you sprayed 5L of water and it covered exactly 25 x 20 metres. Spray a given area, for example, 25 x 20 metres, and see how much water you used, OR spray a given amount of water, for example, 5 litres, and see how much area it covered. The only way to find out is to conduct a small trial first, using just plain water (no chemical) via your knapsack or handgun. However, they must know in advance how much area they will cover with, for example, a 15L spray tank, to get that desirable degree of wetness. ![]() Quite a few of our customers have done it quite satisfactorily. It certainly can be done: spraying an area with a knapsack or a handgun. That's because those types of equipment are generally used for spot spraying, not area spraying. Just short of the point of run-off is about right.īut people who are doing area-type spraying with a handgun or a knapsack don’t generally know how much water it takes for them to spray a given area. And that desired wetness is generally to the point of the leaf surface being visibly damp, but not soaking. Most people already know what volume of water it takes them with their boom gear to cover a given area at the desired degree of ‘wetness’. ![]() The different water amount doesn't really matter at all. ![]() In both cases, the hectare receives the correct 2L of GrassMate. Bloke B will add 2L of GrassMate to 120L of water, and spray the lot onto one hectare. Bloke A will add 2L of, for example, GrassMate to his 80L of water and spray the lot onto one hectare. When spraying with a boom, several variable factors (spray nozzles, pump flow rate, driving speed, foliage density, operator perception of what’s ‘damp’ enough, etc), all combine to mean that one bloke may use say 80L of water to cover a hectare, and the next bloke 120L.īut the different volume of water they use doesn’t matter, as long as the correct amount of the actual chemical is added to the tank. This article explains how to convert a ‘Spray Rate per Hectare’ into ‘Spray Rate per 100L’ (or per 15L, or any other water volume). ![]()
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