10/16/14

Tonight's homework is to complete Assignment 16 and review your notes. Additionally, you should get your permission slip signed - provided you received one (sorry, 12BD). If you so choose, you can print a permission slip here.

Assignment #16 Soil Characteristic Investigation – Day 4 Questions

Answer all of the following questions to the best of your ability in complete sentences in your LAB NOTEBOOK.

Activity 3 – Analysis of Free Ions (Soil Nutrients)

1. Make inferences and draw conclusions based on your observations and data. Support these inferences by referring to your data. Be specific.

2. Make inferences and draw conclusions based on observations and data conducted by other groups about other soil nutrients. Support these inferences by referring to the data. Be specific.

3. Using data and observations from all of the activities, make a well-informed prediction about the what the ideal soil composition would be to maximize productivity in plants. You will actually be producing soil and will have available to you: humus, sand, silt (from sifted potting soil) clay, potting soil. Remember that quality hypotheses are specific, measurable, and supported by rationale.

4. How do soils become depleted of their nutrients?

5. What can be done about nutrient depletion in soil?

Class Results

	Local Soil	Potting Soil
pH	7.0	6.0
Nitrogen	Low	High
Phosphorus	Low	Medium
Potassium	High	Medium