[Max Stam]

Did the test just look for available potassium or total potassium? Big difference. Have you looked into making total available using fungi?

[Kate Tarrant]

Hi Will, you’ll find some useful information in this article…https://lowerblackwood.com.au/targeting-plant-nutrition/.

My understanding is that the volume of potassium required generally can’t all be addressed through foliars, improving soil biology will assist making what you have in the soil more available, helpful to know your totals as Max says, but you may still need to add via soil amendments (granular or liquid).. how much depends on your production goals. There are some general rules of thumb mentioned in the article on biology friendly fertilization worth noting.

lowerblackwood.com.au

Targeting Plant Nutrition - Lower Blackwood LCDC

The application of nutrients, or fertilisers, that plants require is an important component in primary production operations. For numerous reasons, crops or

[Mark Tupman]

When it comes to potassium inputs, potassium sulphate is probably your best option.

It’s an allowable input in certified organic enterprises and has a relatively low salt index so not hard on soil biology.