Survey ID: 3226 Form C-2 Corn Final Pre-harvest Lab Determinations

FORM C 2 CORN OBJECTIVE YIELD - 2022

OMB No.: 0535-0088
Approval Expires: xx/xx/20xx
Project Code: 104
Survey ID: 3226

United States
Department of
Agriculture
NATIONAL
AGRICULTURAL
STATISTICS
SERVICE

Date sample received in lab:

.

EAR WEIGHT (Both Combined)

1. Weight of ears in sealed bags .................................................................................

Grams to 501
Hundredths

. ___ ___

2. Weight of same number of new bags and rubber bands .........................................

Grams to 502
Hundredths

. ___ ___

Grams to 507
Hundredths

. ___ ___

GRAIN WEIGHT and MOISTURE DETERMINATIONS

Shell grain from all ears. If ears are too wet to shell easily, dry them
for a short period at no more than 70 degrees C before shelling.
3. Weight of all grain shelled from ears at time of moisture test...................................

508

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

. ____
509

5. Approximate density of shelled grain ........................................................Pounds/Bushel (One

Decimal)

. ____

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

☐

Yes - Enter code from below

☐

No - Enter code 4 .....................................

510

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

Lab Technician

Date Analyzed
MM DD

2
FORM C-2: CORN

If the 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=

Where

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

A = Weight of small corn 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 corn sample
(enter in item 4)..........................................................................................

. ___

Percent