Originally Posted by pjcvijay
Hello! How to dose pottasium after initial source of pottasium is used? Can I dose the Muriate of potash that 100% water soluble? I read somewhere that we need to dose liguid dosage of Potassium (KH2PO4). What is the difference?
I'm finding hard to get red clay. Can I use gray clay which is available easily for me? Does that contain iron? Or can I use red soil (mix with little clay) that's commonly available in India? Is that one are you referring to laterite?
You can use Muriate of Potash. KH2PO4 has phosphate in it.
You can dose small of amounts of chelated iron, no need for red clay. I'm not sure if plants can access the iron oxide in red clay anyway. You can use clay laterite as well.