2. Plant Nutrition Vs Plant Fertilization
Availability and type of chemical
elements
in plant
Fertilization:
Adding nutrients to soil

3. Nutrients
16 elements:
C, H, O,
Macronutrients
Microntrients

4. Macronutrients
Nutrients required in large quantities N P K Ca Mg S

5. Primary Nutrients N P K Primary because they are
needed in large amounts

6. Secondary MacronutrientsCa Mg S
Only moderate amounts required

7. Micronutrients (Nutrients needed in small quantities)B Cu Cl Fe Mn Mo Na Zn

8. How to Remember???? C HOPKNS Ca Fe Mg (C. Hopkins café might good)
Remaining nutrients:
B, Cu, Cl, Mn, Mo, Zn

9. What are the role of nutrients? (refer to handout)

10. What makes plant look Unhealthy?
Discoloration of leaves
Death of leaf tissue
Stunted growth

11. Examples
Discoloration of
Leaves

12. Nutrient Deficiencies
Chlorosis on
lower leaves

13. Nutrient Deficiencies
Chlorosis of
leaves

14. P
Purplish
coloration
of leaves

15. K
Chlorosis
of leaves
Brown leaf edges

16. K
Chlorosis
of leaves
Brown leaf edges

17. Nutrient Deficiencies
S: yellowing of entire plant; leaves

18. How can you correct nutrient deficiency?

19. Fertlizer

20. What is fertilizer? Any material added to the soil to
provide nutrients that will increase
growth, yield, or nutritional value of
the plants.

21. Fert Classifications
Inorganic
Natural Organic
Synthetic Organic

22. Inorganic Fert
Non-living sources (minerals/rocks)
Chemically made

23. Inorganic Fert Characteristics: Nutrients in soluble form
and quickly made available to plants
Should not come in contact with roots
or foliage for long time period

24. Natural Organic From plant/animal material Characteristics:
N usually predominant
Nutrients are only made available to the plants as the materials decay in soil, so SLOW ACTING & LONG LASTING

25. Natural Organic Examples: Animal manure Cottonseed meal Soybean meal
Dried blood
Dried ground/sewage sludge
Bone meal

26. Synthetic Organic Fert
Made from carbon based materials

28. Sources of Info
Various pictures used in this presentation were found on various internet sites.