What is test weight in corn?

Test weight is “bulk density”, or the weight of corn grain per unit of volume, expressed as pounds per bushel (one bushel is 1.24 cubic ft.) The “standard” test weight for corn is 56 pounds per bushel, and this weight (not a volume of 1.24 cubic feet) is the standard unit for marketing corn grain.

How do you convert wet corn to dry?

Make conversion

1. If initial grain moisture is 20%, initial dry matter content is 80% (100 minus 20).
2. If desired final moisture content is 15%, ending dry matter content is 85% (100 minus 15).
3. Multiply weight of wet grain by initial percent of dry matter; then divide by desired ending percent dry matter.

How much does a bushel of corn weigh at 20 moisture?

100,000 lbs of grain at 20% moisture = 80,000 lbs of absolute dry matter (i.e., 100,000 x 0.80). 80,000 lbs of absolute dry matter = 94,118 lbs of grain at 15% moisture (i.e., 80,000 / 0.85). 94,118 lbs of grain at 15% moisture = 1681 bu of grain at 15% moisture (i.e., 94,118 / 56).

How much does a bushel of high moisture corn weight?

56 pounds
The industry standard moisture content is 15.5%, and the weight per bushel is 56 pounds.

Does test weight matter in corn?

“The pounds of grain in a bin will be affected by test weight, but the pounds of grain harvested per acre are not affected by test weight.” Test weight is a density measurement that is used as an indication of grain quality but is not a factor in determining grain yield in bushels per acre.

What causes high corn weight?

Lower grain moisture means higher test weight since kernel dry matter is heavier than water. Drier grain shrinks and has higher test weight because you can pack more dry kernels into a bushel basket.

What causes light test weight in corn?

As corn dries, it shrinks and packs better into a given volume, so test weight increases. Drier corn is also ‘slicker’ which improves packing. When corn matures before freezing and dries naturally in the field, test weight increases about 0.5 lbs per bushel per point of moisture removed.

What causes light test weight corn?

How to convert wet corn weight to dry corn weight?

Here is the process Nielsen uses to move from wet bushels to dry bushels, at 15%: Step 1. “ First recognize that the initial percent dry matter content depends on the initial grain moisture content,” Nielsen says. “For example, if the initial grain moisture content is 20%, then the initial dry matter content is 80%.”

How much moisture is in 94 lbs of corn?

94,118 lbs of grain at 15% moisture = 1681 bu of grain at 15% moisture (i.e., 94,118 / 56). One take-home reminder from this little exercise is the fact that the grain trade allows you to sell water in the form of grain moisture… up to a maximum market-standard 15% grain moisture content (or 14% for long term storage).

How is the test weight of corn determined?

Any stress that prematurely stops or reduces grain fill and/or interferes with photosynthesis could lower yield potential as well as test weight. Grain yield is determined by the number of kernels per acre along with the weight per kernel, which is shown in the equation below:

How to convert weight of grain to moisture?

Divide total grain weight by appropriate standard bushel weight. Divide total grain weight by 100. Table 4. Moisture conversion for soybeans. Table 5. Moisture conversion for wheat. Table 6. Moisture conversion for grain sorghum. These conversion tables cover the most widely grown crops and the most common moisture contents.