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Equations For Calculating Percent Moisture Content

Where: Mdb = Percent moisture, dry basis

Mwb = Percent moisture, wet basis

Ww  = Weight of Water

Wd  = Weight of dry matter

Shrinkage Equation

W 

100 xW  = M 

d 

wdb  

100 xW +W 

W  = M 

d w

wwb  

 M -100

100 x6  M  = M 

wb

wdb  

 M +100

100 x M  = M 

db

dbwb  

Weight  Final = Moisture% Final -100

 Moisture% Initial -100  xWeight  Initial   

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Table N2.1:Approximate Amount of Water in Ear Corn When Harvested, At Different

Percentages of Moisture Content of the Kernels

Amount of Water

Kernel Moisture in a Bushel of Ear Corn*

Content In Kernels In Cobs Total

(percent) pounds pounds pounds

35 25.4 12.4 37.830 20.2 9.9 30.1

28 18.4 8.8 27.2

26 16.6 7.8 24.4

24 14.9 6.7 21.6

22 13.3 5.5 18.8

20 11.8 4.4 16.2

18 10.4 3.2 13.6

16 9.0 2.1 11.1

14 7.7 1.4 9.112 6.5 0.9 7.4

10 5.3 0.5 5.8

* A bushel of ear corn is defined here as the quantity that will yield 56 pounds of

shelled corn at 15.5-percent moisture

SOURCE: USDA MP919

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