Potassium nitrate (KNO3) is a type of fertilizer with a high content of nitrogen and potassium. Nitrogen and potassium are some of the most important macro nutrients needed by plants for strong and healthy growth.
Potassium nitrate fertilizer is one of the most important fertilizers for farming. Crops need potassium and nitrogen. Vegetable plants use a lot of potassium and nitrogen during flowering and fruiting.
Potassium nitrate is known to help in enhancing the yield of crops. Potassium nitrate fertilizer can also improve the ability of plants to withstand pests and diseases, adverse weather conditions and other types of stress.
Steps to use potassium nitrate as a foliar fertilizer
The following are the steps to take to use potassium nitrate as a foliar fertilizer:
Mix the potassium nitrate
You need to dissolve the potassium nitrate granules or powder in water. The usual concentration of the potassium nitrate in water is 1%-2%. It is always better if you follow the instructions of the manufacturer of the potassium nitrate fertilizer.
Test the mixture
After dissolving the potassium nitrate in water, you need to test the fertilizer solution in a small area. This is to ensure that the fertilizer solution will not burn or damage the plants. The chance of plants’ burning is very low if the concentration of potassium fertilizer in water does not exceed 2%.
Spray the mixture
After testing the fertilizer solution, you need to get a sprayer to spray the fertilizer solution to the leaves and surfaces of the plants. A knapsack sprayer or a motorized sprayer can be used to spray the potassium nitrate solution to plants.
Spraying of the fertilizer solution should be done in the morning when the intensity of the sun is low or in the late evening.
Repeat the application after 1-2 weeks to ensure that the plant gets enough potassium nitrate. Plants use potassium nitrate faster when foliar applied unlike soil based application which takes time.
About Potassium Nitrate
Potassium nitrate fertilizer is type of soluble fertilizer that supplies two macro-nutrients namely potassium and nitrogen to plants.
The following are the chemical properties of potassium nitrate fertilizer:
- Potassium (KNO3) content: 99.4%
- Potassium Oxide (K2O) content: 46%
- Nitrogen content: 13%
- Moisture: 0.1%
- Suphate (SO3) content: 0.01%
- Chloride content: 0.03%
- Iron (Fe) content: 0.002%
- Magnesium (mg) content: 0.004%
- Heavy Metal content: 0.001%
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How to use potassium nitrate fertilizer