Forms and Function of Essential Plant Nutrients - Valley Crops Home
Forms and Function of Essential Plant Nutrients - Valley Crops Home
Forms and Function of Essential Plant Nutrients - Valley Crops Home
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<strong>Forms</strong><br />
Potassium can be made available to crop plants either as commercial inorganic<br />
fertilizers or through manure. Only a few inorganic forms <strong>of</strong> potash are typically<br />
available in Virginia, including:<br />
- Potassium chloride, or muriate <strong>of</strong> potash (0-0-60)<br />
- Potassium sulfate (0-0-50-16S)<br />
- Potassium magnesium sulfate (0-0-22-23S-11Mg)<br />
Potassium Deficiency<br />
<strong>Plant</strong>s deficient in K generally exhibit chlorosis (a loss <strong>of</strong> green color) along the<br />
leaf margins or tips starting with the bottom leaves <strong>and</strong> moving up the plant. In<br />
severe cases, whole plant yellowing may occur <strong>and</strong> the lower leaves may fall <strong>of</strong>f.<br />
Grain crops will have weak stalks, small grain size <strong>and</strong> low yields. Forage crop<br />
yield, vigor <strong>and</strong> quality will be low. Often however serious K deficiencies can<br />
occur without the appearance <strong>of</strong> deficiency symptoms.<br />
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