2015 Dodge County Crop Yield Tour: September 1-4
by Nathan Mueller
Note: Summary tables provided at the end of the blog post.
2015 Dodge County Crop Yield Tour Map
Corn Yield Estimation Method:
- Stop at random fields along a predetermined driving route through Dodge County (Map).
- Walk past all end rows and then walk another 60 feet or more into the field.
- Measure out an area 1/1,000 of an acre based on the row width. For 30-inch rows, this equates to a 17′ 5″ row length.
- Pull back husks on every 5th ear for dryland fields and on every 6th ear for irrigated fields in row 1.
- Repeat step 4 for the adjacent row or row 2 to average across row-units of the planter (likely).
- Count the total number of corn ears in both row 1 and row 2.
- Count the number of kernel rows and kernels within a row or length. Only continuous rows counted, so some kernels at the base and tip of an ear are not counted.
- Calculate kernels per ear from average of 5 years * ears / kernel weight (75K) = bushels/acre for row 1 and repeat for row 2.
- Example: 560 kernels per ear * 33 / 75 = 246 bu/ac
- Average the yield estimates from row 1 and row 2 to get a final estimate. (Note: Yield estimates are from a small area within the field, not the entire field)
Soybean Yield Estimation Method:
- Stop at random fields along a predetermined driving route through Dodge County (Map).
- Walk past all end rows and then walk another 60 feet or more into the field.
- Measure out an area 1/10,000 of an acre based on the row width. For 30-inch rows, this equates to a 21″ row length and for 15-inch rows this equates to two 21″ row lengths for adjacent rows.
- Use a pruning shears to cut all soybean plants at the base in this 1/10,000 of an acre and carry them back to the pickup bed.
- Count the total number or sum of pods on all plants (total number of plants doesn’t matter, unless fewer than 8 plants).
- Count the number of seeds per pod in all pods on two random plants in the sample.
- Multiply total pods per 1/10,000 of an acre by the average number of seeds per pod and divide by 18 (factor for 3,000 seeds/lbs) to get the yield estimate at 13% moisture.
- Yield estimates below include a harvest loss (5%) and moisture loss (harvested at 10% moisture) factor. (Note: Yield estimates are from a small area within the field, not the entire field). The final table at the bottom of the post includes another adjustment factor to predict the county average.
Region 1: Platte River Valley
2015 Platte River Valley Yield Tour
Stop 1: Corn, irrigated, conventional till after corn 30-inch rows, R5 – 50% milkline
= 230 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 33 | Ear Count | 34 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 35 | Ear 1 | 12 | 40 | |
| Ear 2 | 12 | 36 | Ear 2 | 16 | 33 | |
| Ear 3 | 18 | 30 | Ear 3 | 16 | 36 | |
| Ear 4 | 20 | 26 | Ear 4 | 16 | 36 | |
| Ear 5 | 16 | 26 | Ear 5 | 16 | 33 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 217 | Yield (15.5%) | 244 | |||
Stop 1: 230 bu/ac irrigate corn in the Platte River Valley near Fremont.
Stop 2: Soybeans, dryland, conventional till after corn, 20-inch rows, R5.5
= 39 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | |||||||||
| 24 | 28 | 2 | 2 | 2 | ||||||
| 14 | 23 | 2 | 2 | 2 | ||||||
| 21 | 16 | 3 | 2 | 3 | ||||||
| 30 | 26 | 2 | 3 | 3 | ||||||
| 17 | 7 | 2 | 3 | |||||||
| 23 | 17 | 2 | 2 | |||||||
| 17 | 17 | 3 | 2 | |||||||
| 10 | 19 | 2 | 1 | |||||||
| 9 | 20 | 2 | 2 | |||||||
| 2 | 3 | |||||||||
| 3 | 2 | |||||||||
| 2 | 2 | |||||||||
| Total | 338 | Average | 2.3 | |||||||
Stop 2: 39 bu/ac dryland soybeans planted late in Platte River Valley near Fremont
Stop 3: Soybeans, irrigated, conventional till after corn, 30-inch rows, R5.5
= 61 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | |||||||||
| 48 | 33 | 3 | 2 | 2 | 3 | 3 | ||||
| 35 | 14 | 3 | 3 | 3 | 2 | 3 | ||||
| 36 | 34 | 2 | 3 | 3 | 3 | 3 | ||||
| 17 | 27 | 2 | 3 | 3 | 3 | 3 | ||||
| 8 | 28 | 3 | 3 | 3 | 3 | 3 | ||||
| 18 | 41 | 3 | 3 | 3 | 3 | 2 | ||||
| 15 | 50 | 3 | 3 | 1 | 3 | 3 | ||||
| 40 | 3 | 3 | 1 | 3 | 3 | |||||
| 3 | 3 | 3 | 3 | 2 | ||||||
| 3 | 3 | 3 | 3 | 3 | ||||||
| 3 | 3 | 2 | 3 | |||||||
| 2 | 1 | 2 | 2 | |||||||
| Total | 444 | Average | 2.7 | |||||||
Stop 3: 61 bu/ac irrigated soybeans in Platte River Valley along Co Rd R.
Stop 4: Corn, dryland, conventional till, 30-inch rows, R4 – Late Dough
= 185 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 26 | Ear Count | 28 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 14 | 36 | Ear 1 | 12 | 36 | |
| Ear 2 | 12 | 35 | Ear 2 | 14 | 33 | |
| Ear 3 | 16 | 35 | Ear 3 | 16 | 36 | |
| Ear 4 | 14 | 36 | Ear 4 | 16 | 36 | |
| Ear 5 | 16 | 35 | Ear 5 | 14 | 39 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 177 | Yield (15.5%) | 194 | |||
Stop 4: 185 bu/ac dryland corn planted later in the Platte River Valley along Co Rd R.
Stop 5: Soybean, irrigated, no-till after corn, 30-inch rows, R6.
= 75 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | ||||||||||
| 55 | 50 | 3 | 2 | 3 | 2 | 3 | 3 | 2 | 3 | 2 | |
| 36 | 68 | 3 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | ||
| 40 | 36 | 3 | 3 | 2 | 3 | 3 | 2 | 2 | 3 | ||
| 46 | 71 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | ||
| 48 | 28 | 2 | 3 | 3 | 2 | 3 | 2 | 1 | 3 | ||
| 37 | 58 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | ||
| 2 | 3 | 3 | 2 | 3 | 2 | 3 | 2 | ||||
| 2 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | ||||
| 3 | 2 | 3 | 3 | 2 | 2 | 3 | 3 | ||||
| 2 | 2 | 2 | 3 | 2 | 3 | 3 | 3 | ||||
| 2 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | ||||
| 3 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | ||||
| Total | 573 | Average | 2.6 | ||||||||
Stop 5: 75 bu/ac irrigated soybeans in Platte River Valley along Co Rd R.
Stop 6: Corn, flood irrigated, conventional till, 30-inch rows, R5 -1/3 milkline
=234 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 30 | Ear Count | 30 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 18 | 35 | Ear 1 | 18 | 37 | |
| Ear 2 | 16 | 37 | Ear 2 | 16 | 35 | |
| Ear 3 | 14 | 38 | Ear 3 | 16 | 35 | |
| Ear 4 | 16 | 33 | Ear 4 | 18 | 35 | |
| Ear 5 | 16 | 36 | Ear 5 | 16 | 36 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 229 | Yield (15.5%) | 239 | |||
Stop 6: 234 bu/ac flood irrigated corn in the Platte River Valley near North Bend.
Region 2: Central Upland Flats South of Hooper and Scribner
2015 Central Upland Flats Yield Tour
Stop 7: Corn, irrigated, 30-inch rows, R5 -1/4 milkline
=256 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 35 | Ear Count | 32 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 31 | Ear 1 | 18 | 35 | |
| Ear 2 | 18 | 34 | Ear 2 | 16 | 35 | |
| Ear 3 | 16 | 35 | Ear 3 | 18 | 37 | |
| Ear 4 | 16 | 36 | Ear 4 | 16 | 37 | |
| Ear 5 | 16 | 33 | Ear 5 | 16 | 33 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 259 | Yield (15.5%) | 254 | |||
Stop 7: 256 bu/ac irrigated corn south of Hooper along the Webster Road.
Stop 8: Corn, dryland, conventional till, after soybeans, 30-inch rows, R5 -1/3 milkline.
=201 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 25 | Ear Count | 23 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 18 | 35 | Ear 1 | 18 | 36 | |
| Ear 2 | 16 | 34 | Ear 2 | 18 | 34 | |
| Ear 3 | 18 | 33 | Ear 3 | 18 | 38 | |
| Ear 4 | 16 | 37 | Ear 4 | 16 | 42 | |
| Ear 5 | 16 | 39 | Ear 5 | 18 | 39 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 199 | Yield (15.5%) | 204 | |||
Stop 8: 201 bu/ac dryland corn southwest of Hooper on the Webster Road.
Stop 9: Soybeans, irrigated, no-till, after corn, 30-inch rows, R6.
=73 bu/a
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | ||||||||||
| 39 | 33 | 3 | 2 | 1 | 3 | 2 | 3 | 2 | |||
| 55 | 30 | 2 | 2 | 2 | 3 | 2 | 3 | 2 | |||
| 47 | 2 | 3 | 1 | 3 | 3 | 2 | 3 | ||||
| 44 | 3 | 3 | 3 | 2 | 3 | 2 | 3 | ||||
| 44 | 3 | 3 | 3 | 2 | 3 | 2 | 3 | ||||
| 22 | 3 | 3 | 1 | 2 | 3 | 3 | 2 | ||||
| 38 | 2 | 1 | 3 | 2 | 3 | 2 | |||||
| 39 | 1 | 3 | 2 | 2 | 3 | 2 | |||||
| 45 | 2 | 3 | 3 | 3 | 3 | 3 | |||||
| 31 | 3 | 2 | 3 | 3 | 3 | 3 | |||||
| 46 | 3 | 3 | 3 | 3 | 3 | 3 | |||||
| 45 | 3 | 3 | 3 | 3 | 3 | 3 | |||||
| Total | 558 | Average | 2.6 | ||||||||
Stop 9: 73 bu/ac irrigated soybeans along the Webster Road.
Stop 10: Soybeans, dryland, no-till after corn, 15-inch rows, R5.5
=97 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | ||||||||||
| 50 | 27 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | |||
| 44 | 34 | 3 | 3 | 3 | 3 | 3 | 4 | 3 | |||
| 2 | 0 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | |||
| 8 | 18 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | |||
| 46 | 52 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |||
| 45 | 29 | 3 | 3 | 2 | 3 | 3 | 3 | ||||
| 43 | 16 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 56 | 16 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 53 | 6 | 3 | 3 | 4 | 3 | 3 | 3 | ||||
| 26 | 23 | 2 | 3 | 4 | 3 | 3 | 3 | ||||
| 16 | 3 | 4 | 3 | 1 | 3 | 3 | |||||
| 17 | 3 | 3 | 3 | 3 | 4 | 3 | |||||
| Total | 627 | Average | 3.0 | ||||||||
Stop 10: 97 bu/ac dryland soybeans southwest of Hooper that are 55 inches tall.
Stop 11: Soybeans, dryland, no-till, 15-inch rows, R6
=92 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | ||||||||||
| 4 | 44 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | ||
| 34 | 57 | 2 | 3 | 2 | 4 | 2 | 3 | 3 | |||
| 52 | 47 | 2 | 3 | 3 | 1 | 2 | 3 | 4 | |||
| 31 | 49 | 2 | 3 | 3 | 2 | 2 | 2 | 3 | |||
| 32 | 57 | 3 | 3 | 3 | 2 | 3 | 1 | 3 | |||
| 23 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | ||||
| 42 | 2 | 3 | 3 | 3 | 4 | 3 | 2 | ||||
| 40 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | ||||
| 36 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | ||||
| 42 | 3 | 4 | 1 | 2 | 3 | 3 | 3 | ||||
| 38 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | ||||
| 34 | 3 | 3 | 3 | 1 | 3 | 3 | 2 | ||||
| Total | 662 | Average | 2.7 | ||||||||
Stop 12: Corn, irrigated, 30-inch rows, R5 – 1/4 milkline
=227 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 32 | Ear Count | 33 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 38 | Ear 1 | 16 | 37 | |
| Ear 2 | 16 | 36 | Ear 2 | 16 | 30 | |
| Ear 3 | 16 | 38 | Ear 3 | 16 | 28 | |
| Ear 4 | 14 | 36 | Ear 4 | 16 | 31 | |
| Ear 5 | 16 | 22 | Ear 5 | 16 | 36 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 226 | Yield (15.5%) | 228 | |||
Stop 12: 227 bu/ac irrigated corn had foliar diseases cause loss of green leaf area above the ear.
Stop 13: Soybeans, irrigated, no-till, 15-inch rows, R6
=75 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants in the sample | ||||||||||
| 40 | 43 | 2 | 3 | 2 | 2 | 3 | 2 | 3 | 3 | ||
| 65 | 23 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | ||
| 57 | 2 | 3 | 2 | 3 | 3 | 2 | 3 | 3 | 3 | ||
| 8 | 49 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | ||
| 41 | 28 | 2 | 3 | 3 | 2 | 3 | 2 | 2 | 3 | ||
| 36 | 12 | 2 | 3 | 3 | 3 | 3 | 2 | 2 | |||
| 28 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 3 | 3 | 3 | 1 | 2 | 3 | 3 | 3 | ||||
| 20 | 3 | 3 | 1 | 3 | 3 | 3 | 3 | ||||
| 33 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 16 | 3 | 2 | 3 | 3 | 3 | 3 | 4 | ||||
| 34 | 3 | 2 | 1 | 3 | 3 | 3 | 3 | ||||
| Total | 538 | Average | 2.7 | ||||||||
Stop 13: 75 bu/ac irrigate soybeans along the Webster Road.
Stop 14: Corn, dryland, no-till, after soybeans, 30-inch rows, R5 – early dent
=205 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 22 | Ear Count | 23 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 20 | 34 | Ear 1 | 18 | 40 | |
| Ear 2 | 18 | 39 | Ear 2 | 18 | 37 | |
| Ear 3 | 18 | 39 | Ear 3 | 18 | 40 | |
| Ear 4 | 20 | 34 | Ear 4 | 18 | 37 | |
| Ear 5 | 16 | 34 | Ear 5 | 20 | 38 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 194 | Yield (15.5%) | 217 | |||
Stop 14: 205 bu/ac dryland corn southwest of Scribner along the Webster Road.
Region 3: Northwest Rolling Hills south of Snyder and Dodge
Northwest Rolling Hills Crop Yield Tour
Stop 17: Corn, rainfed, conventional, after soybeans, 30-inch rows, R5 – 50% milkline in the Pebble Creek Bottom
=183 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 25 | Ear Count | 25 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 36 | Ear 1 | 14 | 35 | |
| Ear 2 | 16 | 38 | Ear 2 | 16 | 32 | |
| Ear 3 | 16 | 35 | Ear 3 | 14 | 36 | |
| Ear 4 | 12 | 41 | Ear 4 | 14 | 36 | |
| Ear 5 | 16 | 34 | Ear 5 | 20 | 35 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 185 | Yield (15.5%) | 181 | |||
Stop 17: 183 bu/ac dryland corn in the Pebble Creek bottom.
Stop 18: Soybeans, dryland, conventional after corn, 30-inch rows, R6 – full seed
=67 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 25 | 34 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | |||
| 13 | 21 | 3 | 3 | 3 | 2 | 3 | 2 | 3 | |||
| 20 | 14 | 2 | 3 | 1 | 2 | 2 | 2 | 3 | |||
| 50 | 18 | 2 | 2 | 1 | 2 | 2 | 3 | 3 | |||
| 29 | 23 | 3 | 2 | 3 | 2 | 3 | 3 | 3 | |||
| 19 | 29 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | |||
| 45 | 3 | 3 | 3 | 2 | 3 | 3 | |||||
| 37 | 3 | 3 | 2 | 3 | 3 | 3 | |||||
| 37 | 3 | 3 | 2 | 1 | 3 | 2 | |||||
| 16 | 2 | 2 | 3 | 3 | 3 | 3 | |||||
| 36 | 3 | 3 | 3 | 3 | 3 | 2 | |||||
| 40 | 2 | 3 | 3 | 3 | 3 | 3 | |||||
| Total | 506 | Average | 2.6 | ||||||||
Stop 18: 67 bu/ac dryland soybeans on southeast of Snyder.
Stop 19: Corn, rainfed, no-till after soybeans, 30-inch rows, R5 – 50% milkline.
=188 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 26 | Ear Count | 29 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 32 | Ear 1 | 18 | 31 | |
| Ear 2 | 14 | 34 | Ear 2 | 14 | 35 | |
| Ear 3 | 18 | 32 | Ear 3 | 16 | 33 | |
| Ear 4 | 18 | 32 | Ear 4 | 14 | 32 | |
| Ear 5 | 16 | 32 | Ear 5 | 14 | 33 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 184 | Yield (15.5%) | 192 | |||
Stop 19: 188 bu/ac dryland corn on hillside in South of Snyder.
Stop 20: Soybeans, rainfed, no-till after corn, 26-inch rows, R6 – Full Seed.
=57 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 31 | 36 | 3 | 3 | 3 | 3 | ||||||
| 32 | 26 | 3 | 3 | 3 | 3 | ||||||
| 24 | 35 | 3 | 3 | 3 | 3 | ||||||
| 12 | 20 | 3 | 3 | 1 | 3 | ||||||
| 20 | 17 | 4 | 2 | 4 | 4 | ||||||
| 20 | 34 | 3 | 3 | 3 | 4 | ||||||
| 26 | 37 | 4 | 2 | 2 | 3 | ||||||
| 3 | 3 | 3 | 3 | ||||||||
| 4 | 3 | 2 | 3 | ||||||||
| 2 | 3 | 4 | |||||||||
| 3 | 3 | 3 | |||||||||
| 3 | 3 | 3 | |||||||||
| Total | 370 | Average | 3.0 | ||||||||
Stop 20: 57 bu/ac dryland soybeans near Snyder.
Stop 21: Corn, irrigated, no-till, after soybeans, 30-inch rows, R5 – 50% milkline.
=180 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 32 | Ear Count | 32 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 32 | Ear 1 | 16 | 24 | |
| Ear 2 | 16 | 22 | Ear 2 | 16 | 27 | |
| Ear 3 | 16 | 28 | Ear 3 | 14 | 32 | |
| Ear 4 | 16 | 26 | Ear 4 | 16 | 21 | |
| Ear 5 | 16 | 28 | Ear 5 | 16 | 27 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 186 | Yield (15.5%) | 173 | |||
Stop 21: 180 bu/ac irrigated corn with hail damage south of Dodge.
Stop 22: Soybeans, irrigated, no-till after corn, 30-inch rows, R6 – Full Seed.
=57 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 24 | 36 | 3 | 3 | 3 | 3 | 3 | |||||
| 35 | 29 | 3 | 3 | 2 | 2 | 2 | |||||
| 31 | 48 | 3 | 3 | 2 | 3 | 3 | |||||
| 20 | 33 | 3 | 3 | 3 | 3 | 3 | |||||
| 37 | 30 | 3 | 2 | 2 | 2 | 3 | |||||
| 27 | 29 | 2 | 3 | 3 | 2 | 3 | |||||
| 30 | 3 | 3 | 3 | 3 | 3 | ||||||
| 3 | 3 | 3 | 3 | ||||||||
| 3 | 2 | 3 | 3 | ||||||||
| 3 | 3 | 3 | 3 | ||||||||
| 3 | 3 | 1 | 1 | ||||||||
| 3 | 3 | 3 | 3 | ||||||||
| Total | 409 | Average | 2.7 | ||||||||
Stop 22: 57 bu/ac irrigated soybeans south of Dodge.
Region 4: Sandhills north of Scribner
2015 Sandhills Crop Yield Tour
Stop 24: Corn, irrigated, no-till after soybeans, 30-inch rows, R5 – 33% milkline.
=181 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 28 | Ear Count | 29 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 14 | 36 | Ear 1 | 14 | 36 | |
| Ear 2 | 14 | 36 | Ear 2 | 16 | 33 | |
| Ear 3 | 16 | 34 | Ear 3 | 16 | 31 | |
| Ear 4 | 16 | 26 | Ear 4 | 16 | 23 | |
| Ear 5 | 14 | 34 | Ear 5 | 12 | 36 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 182 | Yield (15.5%) | 180 | |||
Stop 24: 181 bu/ac irrigated corn on very sandy soils north of Scribner.
Stop 25: Soybeans, dryland, no-till after corn, 7.5-inch rows, R6 – Full Seed.
=87 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 37 | 28 | 2 | 3 | 2 | 3 | 1 | |||||
| 35 | 36 | 3 | 2 | 2 | 2 | 2 | 2 | ||||
| 45 | 20 | 3 | 2 | 3 | 3 | 2 | 2 | ||||
| 26 | 27 | 1 | 2 | 2 | 2 | 2 | 2 | ||||
| 32 | 30 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 32 | 41 | 3 | 3 | 2 | 3 | 3 | 3 | ||||
| 30 | 27 | 2 | 2 | 3 | 3 | 2 | 3 | ||||
| 18 | 28 | 2 | 3 | 3 | 3 | 2 | 3 | ||||
| 28 | 8 | 3 | 1 | 3 | 2 | 2 | |||||
| 29 | 32 | 1 | 3 | 2 | 3 | 2 | |||||
| 33 | 53 | 3 | 2 | 4 | 3 | 3 | |||||
| 17 | |||||||||||
| Total | 692 | Average | 2.5 | ||||||||
Stop 25: 87 bu/ac dryland drilled (7.5 – inches) soybeans on sandy soils north of Scribner.
Stop 26: Soybeans, irrigated, no-till, after corn, 30-inch rows, R6 – Full Seed.
=58 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 36 | 20 | 2 | 2 | 2 | 4 | 2 | |||||
| 30 | 27 | 2 | 2 | 3 | 3 | 3 | |||||
| 32 | 25 | 3 | 3 | 2 | 3 | 2 | |||||
| 18 | 30 | 3 | 3 | 2 | 3 | 3 | |||||
| 28 | 30 | 2 | 3 | 3 | 3 | 2 | |||||
| 29 | 26 | 2 | 3 | 3 | 3 | 2 | |||||
| 38 | 28 | 3 | 3 | 3 | 3 | 3 | |||||
| 30 | 2 | 3 | 3 | 3 | 2 | ||||||
| 3 | 2 | 2 | 3 | 2 | |||||||
| 3 | 3 | 3 | 2 | 3 | |||||||
| 3 | 3 | 3 | 2 | ||||||||
| Total | 427 | Average | 2.6 | ||||||||
Stop 26: 58 bu/ac irrigated soybeans on sandy soils northeast of Scribner.
Stop 27: Corn, dryland, no-till after soybeans, 30-inch rows, R5 – 33% milkline.
=170 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 25 | Ear Count | 25 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 14 | 40 | Ear 1 | 16 | 37 | |
| Ear 2 | 16 | 31 | Ear 2 | 16 | 35 | |
| Ear 3 | 14 | 37 | Ear 3 | 16 | 34 | |
| Ear 4 | 12 | 39 | Ear 4 | 16 | 36 | |
| Ear 5 | 14 | 35 | Ear 5 | 16 | 39 | |
| Kernel Weight (1,000) | 80 | Kernel Weight (1,000) | 80 | |||
| Yield (15.5%) | 158 | Yield (15.5%) | 181 | |||
Stop 27: 170 bu/ac dryland corn on sandy soil northeast of Scribner.
Region 5: Northeast Rolling Hills near Uehling
2015 Northeast Rolling Hills Crop Tour
Stop 28: Soybeans, dryland, conventional no-till after corn, 30-inch rows, R6 – Full Seed.
=70 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 45 | 54 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 4 | 1 | |
| 44 | 37 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| 65 | 30 | 3 | 3 | 3 | 2 | 3 | 3 | 2 | 1 | 3 | |
| 41 | 37 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | |
| 56 | 51 | 2 | 2 | 3 | 4 | 2 | 2 | 3 | 3 | 3 | |
| 56 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 3 | |||
| 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 2 | 3 | 2 | 3 | 2 | 2 | 2 | 4 | ||||
| 1 | 2 | 1 | 3 | 3 | 3 | 3 | 4 | ||||
| 2 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | ||||
| 3 | 3 | 3 | 2 | 3 | 2 | 3 | 2 | ||||
| Total | 516 | Average | 2.7 | ||||||||
Stop 28: 70 bu/ac soybeans west of Uehling.
Stop 29: Corn, dryland, conventional till after soybeans, 30-inch rows, R5 – 50% milkline.
=221 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 29 | Ear Count | 27 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 14 | 35 | Ear 1 | 16 | 39 | |
| Ear 2 | 16 | 40 | Ear 2 | 16 | 38 | |
| Ear 3 | 18 | 37 | Ear 3 | 16 | 37 | |
| Ear 4 | 14 | 37 | Ear 4 | 16 | 37 | |
| Ear 5 | 18 | 33 | Ear 5 | 16 | 37 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 225 | Yield (15.5%) | 217 | |||
Stop 29: 221 bu/ac dryland corn west of Uehling, which was the highest dryland yield estimate on the tour.
Stop 30: Soybeans, dryland, no-till after soybeans, 30-inch rows, R6 – Full Seed.
=59 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 32 | 36 | 3 | 3 | 2 | 2 | 2 | 2 | 3 | |||
| 33 | 30 | 1 | 3 | 3 | 2 | 3 | 3 | 3 | |||
| 29 | 22 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | |||
| 26 | 35 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | |||
| 27 | 42 | 2 | 3 | 3 | 2 | 2 | 3 | ||||
| 22 | 35 | 2 | 2 | 3 | 2 | 2 | 3 | ||||
| 32 | 26 | 2 | 2 | 2 | 3 | 3 | 3 | ||||
| 36 | 2 | 2 | 2 | 3 | 2 | 3 | |||||
| 2 | 3 | 3 | 2 | 3 | 1 | ||||||
| 2 | 3 | 3 | 2 | 3 | 3 | ||||||
| 2 | 3 | 2 | 2 | 3 | 3 | ||||||
| Total | 463 | Average | 2.5 | ||||||||
Stop 30: 59 bu/ac dryland soybeans southeast of Uehling.
Stop 31: Corn, dryland, no-till after soybeans, 30-inch rows, R5 – 50% milkline.
=176 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 25 | Ear Count | 27 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 36 | Ear 1 | 12 | 38 | |
| Ear 2 | 14 | 34 | Ear 2 | 14 | 40 | |
| Ear 3 | 12 | 38 | Ear 3 | 14 | 36 | |
| Ear 4 | 14 | 31 | Ear 4 | 14 | 39 | |
| Ear 5 | 14 | 36 | Ear 5 | 16 | 35 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 163 | Yield (15.5%) | 189 | |||
Stop 31: 176 bu/ac dryland corn southeast of Uehling.
Stop 32: Soybeans, dryland, no-till after soybeans, 15-inch rows, R6 – Full Seed.
=77 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 18 | 46 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |||
| 58 | 25 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | |||
| 29 | 11 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | |||
| 20 | 19 | 3 | 3 | 3 | 3 | 3 | 2 | ||||
| 28 | 28 | 3 | 3 | 4 | 2 | 3 | 3 | ||||
| 30 | 27 | 3 | 3 | 3 | 3 | 2 | 3 | ||||
| 30 | 41 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 36 | 34 | 2 | 3 | 2 | 2 | 3 | 3 | ||||
| 15 | 36 | 3 | 3 | 3 | 3 | 3 | 2 | ||||
| 2 | 3 | 4 | 3 | 2 | 3 | ||||||
| 3 | 2 | 3 | 1 | 3 | 2 | ||||||
| 3 | 2 | 3 | 2 | 3 | 3 | ||||||
| Total | 531 | Average | 2.8 | ||||||||
Stop 32: 77 bu/ac dryland soybeans southeast of Uehling lodged, but full of pods
Stop 33: Corn, dryland, no-till after soybeans, 30-inch rows, R5 – 33% milkline.
=184 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 25 | Ear Count | 25 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 37 | Ear 1 | 16 | 40 | |
| Ear 2 | 12 | 44 | Ear 2 | 14 | 41 | |
| Ear 3 | 16 | 39 | Ear 3 | 14 | 42 | |
| Ear 4 | 14 | 41 | Ear 4 | 16 | 36 | |
| Ear 5 | 14 | 26 | Ear 5 | 14 | 32 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 179 | Yield (15.5%) | 188 | |||
Stop 33: 184 bu/ac dryland no-till corn west of Winslow.
Region 6: Elkhorn River Valley
2015 Elkhorn River Valley Crop Yield Tour
Stop 15: Soybeans, dryland, conventional till after corn, 22-inch rows, R6 – Full Seed.
=76 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 54 | 27 | 1 | 2 | 3 | 3 | 3 | 2 | 3 | |||
| 44 | 35 | 3 | 2 | 2 | 3 | 3 | 2 | 3 | |||
| 19 | 32 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |||
| 64 | 2 | 3 | 2 | 2 | 3 | 2 | 2 | ||||
| 65 | 2 | 2 | 3 | 2 | 2 | 2 | |||||
| 33 | 3 | 1 | 2 | 2 | 3 | 3 | |||||
| 33 | 3 | 2 | 1 | 3 | 3 | 3 | |||||
| 55 | 3 | 2 | 2 | 3 | 3 | 2 | |||||
| 38 | 3 | 3 | 3 | 2 | 3 | 3 | |||||
| 39 | 3 | 1 | 3 | 3 | 3 | 3 | |||||
| 26 | 3 | 2 | 3 | 2 | 3 | 3 | |||||
| 31 | 2 | 2 | 2 | 2 | 2 | 3 | |||||
| Total | 595 | Average | 2.5 | ||||||||
Stop 15: 76 bu/ac soybeans near Scribner with soybean aphids like many other fields see during the tour.
Stop 16: Corn, irrigated, conventional till after soybeans, 30-inch rows, R5 – 75% milkline.
=158 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 27 | Ear Count | 27 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 20 | 20 | Ear 1 | 16 | 33 | |
| Ear 2 | 16 | 34 | Ear 2 | 16 | 30 | |
| Ear 3 | 16 | 26 | Ear 3 | 16 | 16 | |
| Ear 4 | 16 | 27 | Ear 4 | 16 | 31 | |
| Ear 5 | 18 | 31 | Ear 5 | 14 | 20 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 169 | Yield (15.5%) | 147 | |||
Stop 16: 158 bu/ac irrigated corn on poorly drained soil near Scribner.
Stop 23: Soybeans, dryland, conventional till after corn, 30-inch rows, R6 – Full Seed.
=47 bu/ac
| Pods per 1/10,000 Acres | Seeds per pod from two random plants | ||||||||||
| 19 | 23 | 1 | 2 | 2 | 2 | 3 | 3 | ||||
| 22 | 39 | 2 | 3 | 2 | 3 | 2 | 3 | ||||
| 18 | 29 | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| 21 | 31 | 3 | 1 | 2 | 2 | 3 | 3 | ||||
| 27 | 16 | 3 | 2 | 3 | 3 | 3 | 2 | ||||
| 28 | 26 | 3 | 3 | 2 | 3 | 3 | 3 | ||||
| 17 | 26 | 2 | 2 | 3 | 3 | 3 | 3 | ||||
| 21 | 3 | 3 | 3 | 3 | 1 | 2 | |||||
| 3 | 2 | 3 | 3 | 1 | 3 | ||||||
| 2 | 2 | 2 | 3 | 2 | |||||||
| 3 | 3 | 2 | 3 | 2 | |||||||
| Total | 363 | Average | 2.5 | ||||||||
Stop 23: 47 bu/ac dryland soybean northwest of Scribner.
Stop 34: Corn, dryland, conventional till after soybeans, 30-inch rows, R5 – 50% milkline.
=168 bu/ac
| Row 1 | Row 2 | |||||
| Ear Count | 26 | Ear Count | 25 | |||
| Rows | Length | Rows | Length | |||
| Ear 1 | 16 | 33 | Ear 1 | 16 | 31 | |
| Ear 2 | 14 | 31 | Ear 2 | 14 | 35 | |
| Ear 3 | 16 | 26 | Ear 3 | 16 | 34 | |
| Ear 4 | 14 | 35 | Ear 4 | 16 | 36 | |
| Ear 5 | 14 | 34 | Ear 5 | 14 | 36 | |
| Kernel Weight (1,000) | 75 | Kernel Weight (1,000) | 75 | |||
| Yield (15.5%) | 163 | Yield (15.5%) | 174 | |||
Stop 34: 168 bu/ac dryland corn on well-drained soils southeast of Winslow.
Dodge County: Summary for the 6 regions
Dodge County Corn Yield Summary Tables:
| Stop | Region | Irrigated | Ave. ears per 1/1,000 Acre | Ave. Rows of Kernels | Ave. Row Length (Kernels) | Yield |
| 1 | Platte Valley | Yes | 33.5 | 15.8 | 33.1 | 230 |
| 4 | Platte Valley | No | 27 | 14.4 | 35.7 | 185 |
| 6 | Platte Valley | Yes | 30 | 16.4 | 35.7 | 234 |
| 7 | Central Flats | Yes | 33.5 | 16.6 | 34.6 | 256 |
| 8 | Central Flats | No | 24 | 17.2 | 36.7 | 201 |
| 12 | Central Flats | Yes | 32.5 | 15.8 | 33.2 | 227 |
| 14 | Central Flats | No | 22.5 | 18.4 | 37.2 | 205 |
| 17 | NW Hills (Pebble) | No | 25 | 15.4 | 35.8 | 183 |
| 19 | NW Hills | No | 27.5 | 15.8 | 32.6 | 188 |
| 21 | NW Hills | Yes | 32 | 15.8 | 26.7 | 180 |
| 24 | Sandhills | Yes | 28.5 | 14.8 | 32.5 | 181 |
| 27 | Sandhills | No | 25 | 15 | 36.3 | 170 |
| 29 | NE Hills | No | 28 | 16 | 37 | 221 |
| 31 | NE Hills | No | 26 | 14 | 36.3 | 176 |
| 33 | NE Hills | No | 25 | 14.6 | 37.8 | 184 |
| 16 | Elkhorn Valley | Yes | 27 | 16.4 | 26.8 | 158 |
| 34 | Elkhorn Valley | No | 25.5 | 15 | 33.1 | 168 |
| Stop | Region | Irrigated | Ave. ears per 1/1,000 Acre | Ave. Rows of Kernels | Ave. Row Length (Kernels) | Yield |
| 4 | Platte Valley | No | 27 | 14.4 | 35.7 | 185 |
| 8 | Central Flats | No | 24 | 17.2 | 36.7 | 201 |
| 14 | Central Flats | No | 22.5 | 18.4 | 37.2 | 205 |
| 17 | NW Hills (Pebble) | No | 25 | 15.4 | 35.8 | 183 |
| 19 | NW Hills | No | 27.5 | 15.8 | 32.6 | 188 |
| 27 | Sandhills | No | 25 | 15 | 36.3 | 170 |
| 29 | NE Hills | No | 28 | 16 | 37 | 221 |
| 31 | NE Hills | No | 26 | 14 | 36.3 | 176 |
| 33 | NE Hills | No | 25 | 14.6 | 37.8 | 184 |
| 34 | Elkhorn Valley | No | 25.5 | 15 | 33.1 | 168 |
| Dryland Average | 25.6 | 15.6 | 35.9 | 188 | ||
| 1 | Platte Valley | Yes | 33.5 | 15.8 | 33.1 | 230 |
| 6 | Platte Valley | Yes | 30 | 16.4 | 35.7 | 234 |
| 7 | Central Flats | Yes | 33.5 | 16.6 | 34.6 | 256 |
| 12 | Central Flats | Yes | 32.5 | 15.8 | 33.2 | 227 |
| 21 | NW Hills | Yes | 32 | 15.8 | 26.7 | 180 |
| 24 | Sandhills | Yes | 28.5 | 14.8 | 32.5 | 181 |
| 16 | Elkhorn Valley | Yes | 27 | 16.4 | 26.8 | 158 |
| Irrigated Average | 31.7 | 15.9 | 32.6 | 218 | ||
Dodge County Corn Comments: Disease pressure had been high in some fields and a decent amount of green leaf area above the ear leaf was lost in several fields. Disease causing leaf are loss included gray leaf spot, northern corn leaf blight and southern rust. Ear counts on some dryland fields were lower than I expected given my plant populations (25-30K, average of 28K) taken during my June crop tour. The highest yielding dryland field also had the most ears per acre.
Dodge County Soybean Summary Tables:
| Stop | Region | Irrigated | Row Spacing | Pods per 1/10,000 Acre | Seeds per Pod | Yield |
| 2 | Platte Valley | No | 20 | 338 | 2.3 | 39 |
| 3 | Platte Valley | Yes | 30 | 444 | 2.7 | 61 |
| 5 | Platte Valley | Yes | 30 | 573 | 2.6 | 75 |
| 9 | Central Flats | Yes | 30 | 558 | 2.6 | 73 |
| 10 | Central Flats | No | 15 | 627 | 3.0 | 97 |
| 11 | Central Flats | No | 15 | 662 | 2.7 | 92 |
| 13 | Central Flats | Yes | 15 | 538 | 2.7 | 75 |
| 18 | NW Hills | No | 30 | 506 | 2.6 | 67 |
| 20 | NW Hills | No | 26 | 370 | 3.0 | 57 |
| 22 | NW Hills | Yes | 30 | 409 | 2.7 | 57 |
| 25 | Sandhills | No | 7.5 | 692 | 2.5 | 87 |
| 26 | Sandhills | Yes | 30 | 427 | 2.6 | 58 |
| 28 | NE Hills | No | 30 | 516 | 2.7 | 70 |
| 30 | NE Hills | No | 30 | 463 | 2.5 | 59 |
| 32 | NE Hills | No | 15 | 531 | 2.8 | 77 |
| 15 | Elkhorn Valley | No | 22 | 595 | 2.5 | 76 |
| 23 | Elkhorn Valley | No | 30 | 363 | 2.5 | 47 |
Adjusted Yields to Estimate the 2015 Dodge County Average
| Stop | Region | Irrigated | Row Spacing | Pods per 1/10,000 Acre | Seeds per Pod | Adjusted Yield |
| 2 | Platte Valley | No | 20 | 338 | 2.3 | 33 |
| 10 | Central Flats | No | 15 | 627 | 3.0 | 81 |
| 11 | Central Flats | No | 15 | 662 | 2.7 | 77 |
| 18 | NW Hills | No | 30 | 506 | 2.6 | 56 |
| 20 | NW Hills | No | 26 | 370 | 3.0 | 47 |
| 25 | Sandhills | No | 7.5 | 692 | 2.5 | 73 |
| 28 | NE Hills | No | 30 | 516 | 2.7 | 59 |
| 30 | NE Hills | No | 30 | 463 | 2.5 | 50 |
| 32 | NE Hills | No | 15 | 531 | 2.8 | 64 |
| 15 | Elkhorn Valley | No | 22 | 595 | 2.5 | 64 |
| 23 | Elkhorn Valley | No | 30 | 363 | 2.5 | 40 |
| Dryland Average | 21 | 523 | 2.7 | 60 | ||
| 3 | Platte Valley | Yes | 30 | 444 | 2.7 | 51 |
| 5 | Platte Valley | Yes | 30 | 573 | 2.6 | 63 |
| 9 | Central Flats | Yes | 30 | 558 | 2.6 | 61 |
| 13 | Central Flats | Yes | 15 | 538 | 2.7 | 63 |
| 22 | NW Hills | Yes | 30 | 409 | 2.7 | 48 |
| 26 | Sandhills | Yes | 30 | 427 | 2.6 | 48 |
| Irrigated Average | 28 | 492 | 2.7 | 56 | ||
Dodge County Soybean Comments:
Soybean aphids were present in about half the fields along with some pockets of white mold and sudden death syndrome within fields. Lodging was an issue in some fields, more commonly in narrow-row planted soybeans. Pre-harvest soybean yield estimates tend to over estimate yield. My best guess after accounting for harvest loss (5%) and a harvest moisture of 10%, that another 16% adjustment down is needed to get a final yield estimate for the Dodge County average. Therefore, my estimated Dodge County average is about 58 bu/ac for irrigated and dryland acres this year in Dodge County. Since this is the first yield tour like this, I will continue to make adjustments to arrive at a better soybean yield estimate.
Nathan Mueller, Cropping Systems Extension Educator
402.727-2775
[…] First, how close was my preharvest yield estimates last year during this tour? USDA-NASS 2015 Dodge County yields based on post-harvest farmer surveys was 194.8 bu/ac for all corn acres and 60.3 bu/ac for all soybean acres. My 2015 preharvest yield estimates for all corn acres was 197 bu/ac and for all soybean acres was 58 bu/ac. Check out last years crop tour yield tour: 2015 Dodge County Crop Yield Tour. […]