Pottasium deficiency in maize. Image credit thompsonslimited.com

Potassium deficiency in maize. Image credit thompsonslimited.com

ZIMSEC O Level Combined Science Notes: Mineral Nutrition

  • Besides water and carbon dioxide plants also need many different mineral salts from their environment.
  • These mineral salts are required in small quantities.
  • They are taken up by the plant in solutions form as ions with water and are distributed around the plant.
  • Each mineral element has a specific function in the plant.
  • The three most important mineral elements are:¬†potassium, nitrogen and¬†phosphorus.

Mineral Uses and their deficiencies

Mineral ElementUseDeficiency Effect
NitrogenProtein formation.
Good leaf growth
Stunted growth.
Leaves turn yellow/Chlorosis
PhosphorusProducing energy-carrier molecules.
Good root growth.
Purple leaf colour.
Stunted roots.
PotassiumFlower and Fruit formationYellow/brown leaf margins.
Early death.

To access more topics go to the Combined Science Notes page.


Quick NetOne, Telecel, Africom, And Econet Airtime Recharge

If anything goes wrong, click here to enter your query.