Plant Diseases

3. a natural or chemical substance added to soil to make it better for growing plants
9. disease-producing agents which cause harm to other organisms
10. the ratio of nitrogen, phosphorous and potassium in a fertilizer
11. acronym for Integrated Pest Management
13. fungus; powdery white-gray growth
14. any agent which destroys or kills insects
18. any agent which destroys or prevents the growth of fungi
19. any agent which destroys, repels or kills insects or other organisms harmful to cultivated plants
20. one of the major plant nutrients; makes up part of the chlorophyll in plants.
21. overall health and growth capability of a plant
22. one of the major plant nutrients; essential for cell division & growth
23. any agent (such as an algicide or fungicide) that destroys or inhibits the growth or activity of living organisms
24. iron or nitrogen deficiency in plants will cause __ of the leaves

1. fungus; fluffy growth and is bluish-white in color.
2. gray mold; fungi that causes fuzzy mold growth
3. a pest control process that uses chemical gases to eliminate pests, insects, and other harmful organisms
4. an essential plant micronutrient; vital for photosynthesis
5. floral buckets & tools must be __ regular to prevent growth of bacteria
6. disease where the root’s outer cell layer will be stripped off & the tissue exposed.
7. the loss of rigidity (stiffness) of non-woody parts of plants
8. chemical symbol for iron
12. any agent which to controls or eliminates unwanted plants
15. green pigment in plants
16. loss of the normal green coloration of leaves of plants
17. one of the major plant nutrients; essential for strong stems, roots, and deep flower color
18. Damping-off disease of seedlings is caused by this pathogen