Plant Macro Nutrients

Question 1

Nitrogen. N NO 3

Answer 1

Excess: few fruits brittle growth
DEFICIENCY: yellowing, red, purple intensify, reduced lateral bud breaks.

N : K 1:1 is normal

Question 2

Phosphorus P

Answer 2

Excess: causes dificiency of Zn, FE, Co
deficiency: reduced growth browning thin stems , reduced lateral buds, loss lower leaves, reduced flowering. acid conditions fix with FE, Mg, AI, alkaline fix with Ca

Question 3

Potassium K

Answer 3

Excess: causes N deficiency
Defficiency: Reduced growth, shortened internode growth, brown edges

N:K balance High N vegetative growth
High K promotes reproductive growth

Question 4

Magnesium Mg

Answer 4

Excess interferes with Ca uptake
Defficiency: reduced growth, marginal chlorosis yellow between veins, copied leaves. epsom salts 1 teaspoon per gallon, Outdoor Dolomitic limestone outdoors.

Question 5

calcium Ca

Answer 5

Excess causes high ph blocks absorption of other micronutrients.
Defficiency: inhibition bud growth, death root tip, leaf cupping, blossom- end rot

Important for ph control

Question 6

Sulfur S

Answer 6

Excess : air pollution
Defficiency : yellowing of leaves or entire plant