Survey ID: 3225 Form C-1 Corn Maturity Code-6 Lab Determination

FORM C 1 CORN OBJECTIVE YIELD - 2022

OMB No.: 0535-0088
Approval Expires: xx/xx/20xx
Project Code: 104
Survey ID: 3225

United States
Department of
Agriculture
NATIONAL
AGRICULTURAL
STATISTICS
SERVICE

Date sample received in lab:

.

EAR WEIGHT

1. Weight of third and fourth ears and loose kernels....................................................

Grams to 401
Hundredths

. ___ ___

2. Weight of remaining ears and loose kernels............................................................

Grams to 402
Hundredths

. ___ ___

GRAIN WEIGHT and MOISTURE DETERMINATIONS
Shell grain from the third and fourth ears. If ears are too wet to shell easily, dry them for a
short period at no more than 70 degrees C, before shelling.
Grams to 404

3. Weight of all grain shelled from the third and fourth ears at time of moisture test..........
Hundredths

. ___ ___
405

4. Moisture content of shelled grain.......................................................................
Percent (One Decimal)

. ___

For small samples, use the formula on the back of this form for moisture percent

5. Was the grain used for the moisture determination over dried and/or wetted to enable
processing of the sample?

☐

Yes – Enter code from Below

☐

No – Enter code 4

.............................................

410

1 = Sample was oven dried only
2 = Sample was wetted only
3 = Sample was oven dried AND wetted

Lab Technician(s)

Date Analysis Completed
MM DD

2

FORM C-1: CORN
1/

If sample weight is too small for moisture test, sufficient grains of known
moisture content (use same class and stage of maturity) will be added to the
sample so that a moisture test can be made. The moisture content of the sample
can then be derived using the following formula.
E=

( A + B ) D - ( B x C)
A

Where A = Weight of small sample .....................................................................

. ____ ____ Grams

B = Weight of additional grain required for moisture test ..........................

. ____ ____ Grams

C = Moisture percent of B .........................................................................

. ____ Percent

D = Moisture percent of A + B combined ..................................................

. ____ Percent

E = Result: Moisture percent of small sample (enter in item 4) .................

. ____ Percent