Use about 5 pounds (2.25 kilograms) per 100 square feet (9 square meters) of soil. Greensand releases potassium at a slow rate, so it’s better for long-term soil maintenance than quick adjustments. It also works as a conditioner and helps soil retain water. In addition to digging greensand into your soil directly, you can also add it to your compost pile to improve the potassium content of your compost. Granite dust is mined from natural granite quarries and is fairly inexpensive. Like greensand, it releases potassium slowly, so it won’t work well if you need to make a quick fix. Cut up peels into small pieces and bury them an inch or two (4 or 5 centimeters) in your soil. The peels will take time to rot, so they’ll release potassium more slowly than other amendments. Adding banana peels directly to your soil will also help deter aphids. To increase your compost's potassium content, add fruit and vegetable waste to the pile. Banana peels are your best bet, but orange rinds, lemon rinds, beets, spinach, and tomatoes will make excellent additions, too. Keep in mind you’ll need to give your compost weeks or months to mature. Use a lidded container or cover your compost heap with a tarp when you’re not using it. Potassium compounds are water soluble, so rainfall can easily wash them out of your compost.
أضف الرمل الأخضر إلى تربتك. أضف غبار الجرانيت. ادفن قشر الموز في تربتك. عزز السماد الطبيعي بقشر الموز. أبق السماد الطبيعي مغطى لمنع تسرب البوتاسيوم.