AgTM 405

Correlation of Yield Maps with Infrared Photography AgTM 405 Precision Farming Unit

The Advantages of Infrared Photography Correlated to Yield Maps Shows potential yield reduction due to irrigation, soil type or fertility problems Helps in diagnosing combine monitoring errors that show up on yield maps Low cost - less than $.50 per acre

Madison Farms

3rd generation farm since ,000 acre farm Crops grown include: Alfalfa, Canola, Corn, Buckwheat, Wheat, Potatoes, & Peas 6,479 irrigated acres Desert acres applied with bio-solids from Portland metro areas Employs people

Circle #17

Early Season Infrared - C17 Picture taken on August 11, 1997

Early Season Infrared - C17 Small future yield changes starting to show up

Early Season Infrared - C17 Infrared with yield contour lines overlaid

Mid-Season Infrared - C17 Picture taken on August 23, 1997 Yield changes become less noticeable

Late Season Infrared - C17 Picture Taken on Sept 4, 1997

Raw Yield Data - C17 Yield decrease in Northwest corner

Raw Yield Data - C17 Pivot road and planter skip

Raw Yield Data - C17 Yield monitor malfunction

Average and Contour - C17 After average and contour yield decreases show up the same as monitor malfunctions

Circle #3

Early Season Infrared - C3 Picture taken August 11, 1997 No center ring showing up

Infrared with Contours - C3 Infrared not showing a yield reduction on the West side

Late Season Infrared with Contours - C3 Picture taken September 4, 1997 Center ring showing up

Late Season Infrared - C3 Center ring showing up Ring caused by rotator sprinkler pressure set to high causing leaf damage to corn crop

Late Season Infrared with Contours - C3 Picture taken September 4, 1997 Noticeable ring showing up in the center of the circle

Raw Combine Data - C3 One of the two combines yield monitors was not working correctly

Raw Combine Data - C3 Slight center ring yield reduction showing up at harvest time

Raw Combine Data - C3 Slight center ring yield reduction showing up at harvest time.

Average and Contour - C3 Assumed low yield on West side No center ring showing up

Circle # 53

Infrared - C53 Sand ridge shows up in the infrared

Infrared - C53 Outer edge of the circle shows up in the infrared

Infrared with Contour Lines C53 Yield contour lines show the sandy ridge and the reduction in yield

Raw Data - C53 The sandy ridge and the outer edge both show a yield reduction

Average and Contour - C53 Sand ridge shows yield reduction

Average and Contour - C53 Outer ring of the circle shows yield reduction

Circle #55

Infrared - C55 Infrared shows the future area of low yields located on the sandy ridge

Infrared - C55 Infrared shows no future reduction in yield at this spot

Infrared with Contours - C55 Yield map contours and the infrared show the same location for yield reduction

Infrared with Contours - C55 Yield map contours and the infrared do not show the same location for yield reduction

Average and Contour - C55 Large yield reduction in the Northeast corner Center pivot reversed before the reverse stops

Raw Data - C55 Combine monitor error shows an assumed low yield at arrow

Raw Data - C55 Combine monitor shows actual low yield at arrow due to sandy ridge

Circle #16

Corn Yield - C16

The Question is What causes the low yield spot?

Nitrogen - C16 Sample date 2/12/1997 Red area 29 lbs/acre Yellow area 85 lbs/acre Green area 141 lbs/acre

Potassium - C16 Red area 368 lbs/acre Yellow area 501 lbs/acre Green area 634 lbs/acre

Ph. - C16 Red area 6.8 p.h. level Yellow area 7.45 p.h. level Green area 8.09 p.h. level

Phosphorus - C16 Red area 33 lbs/acre Yellow area 51 lbs/acre Green area 69 lbs/acre

Iron - C16 Red area 5 lbs/acre Yellow area 12 lbs/acre Green area 19.9 lbs/acre

Magnesium - C16 Red area 3 lbs/acre Yellow area 6.5 lbs/acre Green area 9.9 lbs/acre

Corn Yield - C16 Rocky Out-Cropping

Circle #12

Raw Combine Yield Data on Canola - C12 Lower yield shows up in the draw of the canyon

Average and Contour Canola C12

Circle #21

Raw Combine Data - C21 Lower yield shows up across the center of the circle

Average and Contour - C21

Potassium - C21

Nitrogen - C21

Phosphorus - C21

Sulfur - C21

Summarizing the Advantages of Infrared Photography Shows potential yield reduction due to irrigation, soil type or fertility problems Helps in diagnosing combine monitoring errors that show up on yield maps Low cost - less than $.50 per acre