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Repeat these steps in different parts of the field and pay special attention to the
areas where the hay is heaviest.
The amount of variation found among windrow readings as well as the average
stem moisture should be taken into consideration before the decision is made to
start baling.
FACTORS AFFECTING YOUR READINGS
Because of the many variables that affect the electrical meter readings, the indicated
moisture content should not be used as an absolute quantitative measurement.
Meter readings are very useful guidelines for safe storability of hay.
Meter readings become more significant when they are considered in the light of the
density of the bales, anticipated handling and storage, and prevailing climate
conditions.
RANGE OF MOISTURE CONTENT
The F-2000 is designed to test moisture in hay over a range of 8%-40%. Readings
over 30% should be used only as a qualitative indication of high moisture content.
Delmhorst moisture meters use the relationship existing between electrical
conductivity and moisture content in hay. As moisture content increases, so does
the conductivity.
Tests on hay at high moisture content, over 25%, are less accurate. This is mostly
due to the variability in moisture distribution. The reduced level of accuracy in the
high range does not significantly affect the usefulness of the meter, as a few high
readings indicate that some action be taken to dry the hay to avoid spoilage or even
self-combustion.
While it is important to note the average of several readings, it is even more
important to note the high readings and the frequency at which they occur.
HAY TEMPERATURE
The F-2000 has been calibrated at 80°F on various samples of different types of hay,
mostly alfalfa, and on different cuttings and mixtures. The higher the temperature of
the sample, the higher the meter readings will be. Temperatures lower than 80°F
cause lower meter readings. The correction is approximately 1% point for every 20°
F difference. Refer to chart below:
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