High K
The Need for Potassium
Potassium is important for supporting the physiological development of an alfalfa stand by fostering the activation of over 60 plant enzymes. Additionally, potassium is responsible for:
- Maintaining optimal water use through regulation of photosynthesis and transpiration.
- Stimulating nutrient uptake, promoting early growth and improving plant function.
- Augmenting stomata function through cell turgor, reducing water loss and wilting.
- Maximizing overall plant health and the crop's ability to withstand disease and drought stress.
- Boosting winter hardiness and stand longevity.
A lack of potassium can result in plants that fail to reach their full potential. Signs of a deficiency include leaf tip burn -- small white or yellowish spots that first appear around the outer edges of older leaves.
Growing one ton of alfalfa typically removes about 60 pounds of potassium from the soil. Potassium (K) is an essential nutrient, so it needs to be replenished in order to ensure future yield and forage quality.
Recent studies suggest that many growers aren't applying enough potassium to keep up with crop removal of this key nutrient.