Transcript Agriscience, Unit 18 worksheet

Agriscience, Unit 18 worksheet
1.
What happens when fertilizer is added to the
soil for plant use?
2. An 80-lb bag of 10-10-12 contains how lbs
each of nitrogen, phosphorus, and potassium:
3. Organic fertilizers made from dried and
pulverized manure are:
4. Which plant growing media is a volcanic ash material?
5. What is the general term given to anything added to a
soil to provide additional organic matter, specific
nutrients or modify soil phs?
6. The availability and type of basic chemical
elements in the plant is called:
7. The fertilizer application used on row crops where the
fertilizer is placed in bands about 8 inches from the row is
known as:
8. Hydroponically grown plants differ principally
from soil-grown plants in that they require what type
of support:
9. The measure of the degree of acidity (sourness)
and alkalinity ( sweetness) of soil is called:
10. What is a characteristic of water that can affect
the growth of a plant?
11. Warm season vegetables and most flowers grow
best in temperatures between:
12. Most plants require a pH somewhere between:
13. Nutrients needed in relatively large amounts by
plants are called:
14. Yellowing of the leaves of a plant caused by
lacking of nitrogen is called:
15. The three primary nutrients supplied in a
complete fertilizer are:
16. Soil pH generally is raised by adding:
17. Soil pH affects the availability of:
18. What is applied to lower the pH value of soil?
19. List five examples of a plant growing media is:
20. Most nutrients are absorbed in solution as:
21. What form must most nutrients become before they can be
absorbed by a plant?
22. What type of fertilizer is animal manure?
23. Which plant growing media is a mineral mica-type
material