Tomato plants must have adequate levels of potassium to positively affect the plant’s sugar levels, fruit ripening and storage characteristics – all of which lead to improved fruit quality. In addition, increased levels of potassium have been shown to enhance carotenoids, like lycopene, which gives tomatoes their rich red color.
Tomatoes require more potassium than any other nutrient, and the demand is greatest during fruit bulking. Each ton of harvested tomatoes can require 6.3 to 8.7 lbs / K20 / acre.
Potassium deficiency in tomatoes can cause …
- yellow shoulder
- irregular shaped and hollow fruits
- high levels of internal white tissue
- decreased ripening
- uneven ripening