Mississippi Administrative Code › Title 11 - Mississippi Department of Environmental Quality › Part 8 - Geology Regulations › Chapter 2 - Mississippi Commission on Environmental Quality Regulations Governing Surface Coal Mining › Appendix 11-8-2-A - To The Administrative Procedures Act Rules › Addendum 11-8-2-11-8-2-A-U - Procedure for Manually Sampling Row Crops

Current through June 25, 2024
Rules 2,5
A. Corn
1. Randomly select locations to determine
				  sample adequacy. Follow Addendum A and Addendum H instructions. The initial
				  number of samples to take for corn are as follows:
size of area (acres)
# samples
1 - 39
8
40 - 279
12
280 - 639
16
640 or more
28
2.
				  Determine the row width and select the length of row to measure 1/1000th of an
				  acre.
row width (inches)
length of row per 1/1,000 acre
10
52 feet 3 inches
20
26 feet 2 inches
30
17 feet 5 inches
36
14 feet 6 inches
38
13 feet 9 inches
40
13 feet 1 inch
3.
				  Locate the sample site adjacent to the closest corn stalk.
4. Measure and mark the required row
				  length.
5. Determine the 3rd and
				  4th ears of the row and tag these ears with a rubber band. If there are less
				  than four ears in the first row, the last ear and next to the last ear should
				  be tagged. In case where a stalk has more than one ear, count the top ear
				  first. (note: An ear of corn is defined as a cob having at least one kernel.
				  The tagged ears will be used to determine the moisture content, and at least
				  250 grams of grain are needed. If it does not appear that the 3rd and 4th ears
				  will supply 250 grams of grain for a moisture test, then the 5th, 6th, and or
				  7th ear should be included until at least 250 grams of corn is
				  collected.
6. Husk all ears in the
				  measured length of row and snap the shank off as cleanly as possible. Be sure
				  to include the ears tagged for moisture sampling.
7. Weigh the husked ears using a balance
				  scale to obtain a field weight.
8.
				  After weighing, put the ears tagged for moisture testing into polyethylene bags
				  and seal. Mark the bags by sample and field number.
9. Repeat steps 3 through 8 for each sampling
				  point.
10. All the ears saved for
				  calculating moisture shall be brought to the nearest commercial certified grain
				  handling facility to determine moisture content and bushel weight. Obtain a
				  scale ticket signed by an individual certified to run these tests verifying the
				  moisture and weight per bushel.
11.
				  Calculate the yield per acre for each sample using this formula:
a x b x c x d divided by e = yield per acre
where:
a = weight of all ears/sample
b = 1,000 (portion of an acre represented)
c = ear corn to shell corn factor
d = moisture adjustment factor
e = tested sample weight per bushel
An example for figuring the moisture as described in
					 Addendum R is as follows:
adj. factor = 100 - m / 100 - a
where: m = moisture content of grain at harvest
a = adjusted moisture, example 15.5% for corn
12. Total all adjusted yields and
				  figure an average yield.
13. Use
				  the same above procedure when figuring yields from the reference plots, adjust
				  the productivity based on differing soils series as per Addendum Q, and compare
				  the yields to the test plots.