Agriscience, Unit 18 worksheet. 1.What happens when fertilizer is added to the soil for plant use?

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