QID 120031C-2 Form C-2 - Winter Wheat Yield Survey - National Laborato

Project Code 101 QID 120031C-2		OMB No. 0535-0088: Approval Expires 7/31/2018
	FORM C-2 WINTER WHEAT YIELD SURVEY National Laboratory Determinations 2018			NATIONAL AGRICULTURAL STATISTICS SERVICE

			Date sample received in lab:

1. From Identification Tag

UNIT 1

UNIT 2

a. All Heads (Emerged, Late Boot, and Detached)

Number

Total Number

501

b. Stage of maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unit

Unit 1 Code

502

2. Laboratory Determinations, All Clipped Heads from Units 1 and 2

a. Unit 1:

(i) Heads in sample 1/ (Initial if recounted __________) . . . . . . . . . . . . . . . . . . . . .

Number

504

(ii) Total weight of all heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grams

503

. ___ ___

b. Unit 2:

(i) Heads in sample 1/ (Initial if recounted __________) . . . . . . . . . . . . . . . . . . . . .

Number

506

(ii) Total weight of all heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grams

505

. ___ ___

c. Total weight of all heads 2a(ii) + 2b(ii) . . . . . . . . . . . . . . . . . . .

Grams

. ___ ___

3. Threshed Grain, All Heads from Units 1 and 2

a. Weight immediately after threshing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grams

507

. ___ ___

(i) Is item 3a LESS than 2c? YES – Go to item 3b

NO –STOP – NOTIFY SUPERVISOR

b. Weight immediately before moisture test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Grams

508

. ___ ___

c. Moisture content 2/ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Percent

509

. _____

4. Approximate density of the sample . . . . . . . . . . . . . . . . . . . . . . . .

Pounds/Bushel (One Decimal)

510

. _____

Lab Technician:			Date Analyzed:
						MM DD
1/If the Lab count is different from the field count, follow these steps— Check if the correct unit was counted. RE-ADD counts from the ID tag. If counts are different by 2% or more (lab count / field count) then recount heads and initial unit recounted. Lab supervisor, notify State when difference 5% or more. 2/If the sample weight is too small or too dry for a moisture test, follow the procedures on the back of this form to complete the Moisture Test.

FORM C-2: WHEAT

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

Where	A = Weight of small or dry wheat 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 or dry wheat sample (enter in item 3c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. ____	Percent