GPS Exercise

1. DAMDSB
2. DEANCODY
3. JASON_XI
4. NIKBETH
5. SCRUBIFF
6. SUMMER

Estimating CV's by Method of Sampling (Jan 31, 2003)

1.  Determine the mean, standard deviation and CV using the following sampling methods for
a. Random Area
b. Center Area
c. Center Point

I. Soil pH
II. Soil NO3-N
III. Soil Test P
IV. Soil Test K.

2.  Which sampling method had the highest variability for each of the soil test parameters.

3.  Which soil test parameter had the highest variability over sampling methods.

4.  Why would it be important to understand sampling method variability and soil test parameter variability?

Homework February 26, 2003

1.  Plot spectral radiance versus wavelength (350 - 1100 nm) for PLANTS 1 and 2.

2. Plot spectral radiance versus wavelength (350 - 1100 nm) for the WHITE Plate

3. Compute reflectance (Plants 1 and 2 reading divided by the White Plate) and plot this reading versus wavelength (350 - 1100 nm).

4. Collect NDVI readings from Plants 1 and 2 using GreenSeeker.

5. What is the difference between radiance and reflectance?

6. What major differences in reflectance were noted between plants 1 and 2?

7. Were there differences in Plants 1 and 2 using GreenSeeker?  What were they?

FILES

Plant1-1
Plant1-2

Plant2-1
Plant2-2

Plant3-1
Plant3-2

White-Plate1
White-Plate2

8.  Compute NDVI from the reflectance readings from plants 1, 2, and 3 using RED (655-665) and NIR (775-785).  Compare this NDVI reading with the NDVI readings from the GREENSEEKER.