Deficiency
Plant Importance
Nitrogen
Other
100

Purpling of leaves.

What is P deficiency?
100

Chlorophyll formation.

What is N importance in plants?

100

This is the form of nitrogen that is in the atmosphere.

What is N2 gas?

100

What do you need more of, Ca or Mg?

Ca

200

Chlorosis of the older leaves and stunting.

What is N deficiency?

200

Root growth

What is P importance in plants?

200
This group of bacteria fix nitrogen.

What are Rhizobia?

200

If given soil test results as ppm, you would do this to covert to pounds per acre.

What is "multiply by 2"?
300

Necrotic or spotty leaf margins in older leaves

What is K deficiency?

300

Amino acid and vitamin formation.

What is S importance in plants?

300

This would be the soil condition where nitrification would predominate.

What are warm, aerated soils?

300

For converting from pounds per acre of P needed to pounds per acre of how much fertilizer of P as P2O5 to add, this is what you would multiply P by.

What is 2.29?

400

Thin spindly stems and chlorosis of the entire plant.

What is S deficiency?

400

Cell walls, elongation and division.

What is Ca importance in plants?

400

This is lower for bacteria than for bacterivores like nematodes or amoeba. (which is why nitrogen is released into the soil solution when they eat bacteria)

What is C to N ratio (C:N)?

400

This nutrient is often 'fixed' or adhered to soil colloids int he inorganic form.

What is P?

500

Rot or necrosis at extremities (leaf tips or fruit bottoms)

What is Ca deficiency?

500

Protein synthesis, chlorophyll, enzymes.

What is Mg importance to plants?

500

These two types of bacteria are important for nitrification.

What are Nitrosomonas and Nitrobacter?

500

Can be taken up by plants through the leaves.

What is S?

M
e
n
u