Plant deficiency practical (7)

Question 1

Devise method to investigate plant deficiencies

Answer 1

Control: Plant grown in water solvent with all nutrients.
Use 3 other solutions, one without nitrate, other without magnesium, other without calcium ions.
Place plantlet in test tube with the solution halfway, leave test tube closed with aluminium foil someplace with sun for a week.

Question 2

Controlled variables:

Answer 2

From same culture to control age
Species and size of plantlets
Volume of water and mineral solution
Size of container
Light exposure and temperature

Question 3

Results:

Answer 3

-With all minerals: Full growth and no abnormalities
-Except magnesium: Yellowish leaves and stunted growth
-Except nitrates: Stunted growth
-Except calcium: Weak structure, plantlets are soft, growth stunted, could even be shorter than before