Potassium helps strengthen plants’ abilities to resist disease and plays an important role in increasing crop yields and overall quality. Potassium also protects the plant when the weather is cold or dry, strengthening its root system and preventing wilt. Effects of Potassium on Plants Potassium is important to plant growth and development. Potassium Helps Plants grow faster Potassium Helps Use water better and be more drought resistant Potassium Helps Fight off disease - Resist pests , Grow stronger - Produce more crops...Etc - When severe potassium deficiency happens, you may be able to see some signs in the leaves. The leaves, especially older leaves, may have brown spots, yellow edges, yellow veins, or brown veins. Dosage: Take 2 - 3 ml for every 1 Litre Water