2017 Dodge County Crop Tech Cafe Yield Tour: September 5-7
with Nathan Mueller
As a reminder, here is my methodology…
Crop Tech Cafe Corn Yield Estimation Method:
- Stop at random fields along a predetermined driving route through Dodge County (map above).
- Walk past all end rows and then walk at least 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.
- 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 ears, then kernels per ear * total 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)
Crop Tech Cafe Soybean Yield Estimation Method:
Step-by-step printable guide and calculator: Estimating Soybean Yield
- Stop at random fields along a predetermined driving route through Dodge County (map above).
- Walk past all end rows and then walk at least 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.
- Count the number of seeds per pod in all pods on two representative 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 preharvest/harvest loss (15%) and moisture loss (harvested at 9% moisture) factor. (Note: Yield estimates are from a small area within the field, not the entire field).
2017 Crop Yield Tour Summary
Dates of Previous Yield Tours:
- 2017 Yield Tour – Sept. 5-7
- 2016 Yield Tour – Sept. 7-10
- 2015 Yield Tour – Sept. 1-4
The 2017 corn preharvest yield estimate was 197 bu/ac, which is up 13 bu/ac from a year ago and similar to 2015 (Table 1 below). Irrigated and rainfed yields averaged 224 bu/ac and 173 bu/ac, respectively. Irrigated yields were 12 bu/ac and 15 bu/ac higher than 2016 and 2015, respectively. However, rainfed yields are up 6 bu/ac from 2016, but 15 bu/ac less than 2015. Ear counts across the county averaged 28,200/acres, which is up from 2016 (July 5 Wind Storm impacted 75,000 acres with green snap) and similar to 2015. Corn maturity is behind from last year but ahead of 2015 (tours roughly the same time each year, so not a perfect comparison).
Table 1. Summary of Dodge County Yield Tours for Corn | ||||||||
Crop Year | Tillage % | Maturity (Growth Stage) | Ear Count (k/acre) | Rows of Kernels | Length of rows (kernels) | Kernel Weight Factor | Final (bu/ac) | USDA Dodge County Survey |
2017 | 59% | 5.5 | 28.2 | 16.2 | 33.5 | 78 | 197 | 199.3 |
Irrigated | 50% | 5.5 | 30.6 | 16.4 | 33.4 | 74 | 224 | NA |
Dryland | 67% | 5.6 | 26.0 | 16.1 | 33.5 | 81 | 173 | NA |
2016 | 53% | 5.7 | 25.6 | 17.0 | 33.8 | 79 | 184 | 174.8 |
Irrigated | 63% | 5.7 | 27.6 | 17.1 | 34.4 | 76 | 212 | 194.8 |
Dryland | 44% | 5.6 | 23.8 | 17.0 | 33.2 | 81 | 167 | 167.8 |
2015 | 53% | 5.3 | 27.8 | 15.7 | 34.2 | 75 | 197 | 195 |
Irrigated | 57% | 5.4 | 31.0 | 15.9 | 31.8 | 75 | 209 | 209 |
Dryland | 50% | 5.2 | 25.6 | 15.6 | 35.9 | 76 | 188 | 190 |
The 2017 soybean preharvest yield is estimated at 56 bu/ac for the county (averaged across rainfed and irrigated), down 7 bu/ac from a year ago and down 2 bu/ac from 2015 (Table 2 below). The county average for pods per 1/10,000 of acre was down nearly 100 pod from 2016 but similar to the pod count in 2015. Seeds per pod was 2.5 that is similar to the 2.4 in 2016 and 2.6 in 2015. Maturity was only slightly behind from last year, but ahead of 2015 similar to corn.
Table 2. Summary of Dodge County Yield Tours for Soybeans | ||||||||
Crop Year | Tillage % | Row Spacing (inches) | Maturity (Growth Stage) | Pods per 1/10,000 Acre | Seeds per Pod | Estimated Seed Size | Preharvest Yield Estimate (bu/ac) | USDA Dodge County Yield Survey |
2017 | 47% | 24 | 6.0 | 497 | 2.5 | 3000 | 56 | 60.7 |
2016 | 59% | 21 | 6.1 | 602 | 2.4 | 3166 | 63 | 60.3 |
2015 | 38% | 24 | 5.9 | 507 | 2.6 | 3000 | 58 | 59.7 |
Table 3. 2017 Corn Preharvest Yield Estimates by Stop
Stop | Region | Irrigated | Maturity (stage) | Ear Count (k/acre) | Rows of Kernels | Length of rows (kernels) | Kernel Weight Factor | Final (bu/ac) |
2 | Platte River Valley | Yes | 5.66 | 28.5 | 15.8 | 33.1 | 75 | 198 |
3 | Platte River Valley | No | 5.75 | 23.5 | 19.2 | 26.9 | 85 | 141 |
6 | Platte River Valley | Yes | 5.5 | 25.5 | 16.2 | 36.9 | 70 | 218 |
7 | Platte River Valley | Yes | 5.5 | 31.5 | 16.4 | 31.3 | 75 | 215 |
9 | Fillmore Flats | No | 5.5 | 29.5 | 16.4 | 32.9 | 80 | 198 |
11 | Fillmore Flats | Yes | 5.5 | 33.0 | 16.4 | 34.6 | 75 | 249 |
13 | Fillmore Flats | Yes | 5.5 | 32.0 | 16.2 | 34.1 | 75 | 235 |
15 | Fillmore Flats | No | 5.75 | 27.0 | 15.6 | 35.9 | 80 | 189 |
18 | Nora Hills | No | 5.5 | 28.5 | 15.4 | 30.2 | 80 | 165 |
19 | Nora Hills | No | 5.33 | 22.0 | 17.0 | 36.5 | 80 | 182 |
21 | Nora Hills | Yes | 5.33 | 32.0 | 16.6 | 32.0 | 75 | 226 |
23 | Thurman Dunes | Yes | 5.5 | 28.0 | 16.0 | 35.5 | 75 | 212 |
26 | Moody Hills | No | 5.75 | 24.0 | 15.4 | 34.3 | 80 | 158 |
27 | Moody Hills | No | 5.5 | 23.0 | 15.6 | 37.4 | 80 | 167 |
28 | Moody Hills | No | 5.33 | 30.5 | 14.0 | 32.1 | 80 | 170 |
31 | Elkhorn River Valley | No | 5.66 | 26.0 | 16.0 | 35.3 | 80 | 183 |
32 | Elkhorn River Valley | Yes | 5.5 | 34.5 | 17.4 | 29.8 | 75 | 237 |
2017 (County) | 5.5 | 28.2 | 16.2 | 33.5 | 78 | 197 | ||
Irrigated | 5.5 | 30.6 | 16.4 | 33.4 | 74 | 224 | ||
Dryland | 5.6 | 26.0 | 16.1 | 33.5 | 81 | 173 |
Table 4. 2017 Soybean Preharvest Yield Estimates by Stop
Stop | Region | Irrigated | Row Spacing | Plant Population (k/acre) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final |
1 | Platte River Valley | Yes | 30 | 150 | 543 | 2.3 | 18 | 57 |
4 | Platte River Valley | Yes | 30 | 80 | 438 | 2.5 | 18 | 50 |
5 | Platte River Valley | Yes | 30 | 150 | 372 | 2.4 | 18 | 40 |
8 | Platte River Valley | No | 15 | 140 | 528 | 2.6 | 18 | 61 |
10 | Fillmore Flats | No | 30 | 80 | 515 | 2.7 | 18 | 62 |
12 | Fillmore Flats | Yes | 15 | 110 | 558 | 2.5 | 18 | 63 |
14 | Fillmore Flats | Yes | 30 | 140 | 520 | 2.5 | 18 | 58 |
16 | Fillmore Flats | No | 15 | 70 | 645 | 2.6 | 18 | 71 |
17 | Nora Hills | No | 30 | 170 | 565 | 2.3 | 18 | 60 |
20 | Nora Hills | No | 15 | 100 | 508 | 2.4 | 18 | 54 |
22 | Nora Hills | Yes | 30 | 200 | 632 | 2.8 | 18 | 80 |
24 | Thurman Dunes | Yes | 30 | 90 | 463 | 2.2 | 17 | 49 |
25 | Moody Hills | No | 30 | 140 | 532 | 2.4 | 18 | 58 |
29 | Moody Hills | No | 15 | 120 | 427 | 2.4 | 18 | 47 |
30 | Moody Hills | No | 15 | 80 | 436 | 2.5 | 18 | 50 |
33 | Elkhorn River Valley | No | 30 | 140 | 403 | 2.6 | 17 | 49 |
34 | Elkhorn River Valley | Yes | 15 | 40 | 361 | 2.6 | 18 | 39 |
2017 | 24 | 118 | 497 | 2.5 | 18 | 56 |
Detailed Reports by Individual Stops Organized by Region
Region 1: Platte River Valley
Stop 1: 57 bu/ac soybeans, irrigated, conventional-tilled following corn in 30-inch rows at R6 growth stage.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
1 | 30 | 150 | 543 | 2.3 | 18 | 57 |
Stop 2: 198 bu/ac corn, irrigated, conventional-tilled following soybeans at 2/3 milk line.
Row 1 – Stop 2 | Row 2 (Adjacent Row) | |||||
Ear Count | 28 | A | Ear Count | 29 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 18 | 32 | Ear 1 | 16 | 31 | |
Ear 2 | 14 | 32 | Ear 2 | 12 | 39 | |
Ear 3 | 16 | 32 | Ear 3 | 16 | 31 | |
Ear 4 | 16 | 32 | Ear 4 | 18 | 33 | |
Ear 5 | 16 | 35 | Ear 5 | 16 | 34 | |
Average Kernels/Ear | 522 | B | Average Kernels/Ear | 520 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 195 | Yield (15.5%) | 201 |
Stop 3: 141 bu/ac corn, rainfed, conventional-tilled following soybeans at 3/4 milk line.
Row 1 – Stop 3 | Row 2 (Adjacent Row) | |||||
Ear Count | 23 | A | Ear Count | 24 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 22 | 24 | Ear 1 | 18 | 24 | |
Ear 2 | 16 | 34 | Ear 2 | 18 | 31 | |
Ear 3 | 20 | 28 | Ear 3 | 20 | 20 | |
Ear 4 | 20 | 27 | Ear 4 | 20 | 20 | |
Ear 5 | 18 | 31 | Ear 5 | 20 | 30 | |
Average Kernels/Ear | 546 | B | Average Kernels/Ear | 478 | B | |
Kernel Weight Factor | 85 | C | Kernel Weight Factor | 85 | C | |
Yield (15.5%) | 148 | Yield (15.5%) | 135 |
Stop 4: 50 bu/ac soybeans, irrigated, conventional-tilled following corn in 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
4 | 30 | 80 | 438 | 2.5 | 18 | 50 |
Stop 5: 40 bu/ac soybeans, flood-irrigated, conventional-tilled following corn in 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
5 | 30 | 150 | 372 | 2.4 | 18 | 40 |
Stop 6: 218 bu/ac corn, irrigated, conventional-tilled, following soybeans at 1/2 milk line
Row 1 – Stop 6 | Row 2 (Adjacent Row) | |||||
Ear Count | 26 | A | Ear Count | 25 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 38 | Ear 1 | 18 | 36 | |
Ear 2 | 16 | 36 | Ear 2 | 16 | 36 | |
Ear 3 | 16 | 38 | Ear 3 | 16 | 34 | |
Ear 4 | 16 | 38 | Ear 4 | 16 | 36 | |
Ear 5 | 16 | 40 | Ear 5 | 16 | 37 | |
Average Kernels/Ear | 608 | B | Average Kernels/Ear | 587 | B | |
Kernel Weight Factor | 70 | C | Kernel Weight Factor | 70 | C | |
Yield (15.5%) | 226 | Yield (15.5%) | 210 |
Stop 7: 215 bu/ac corn, flood-irrigated, conventional-tilled, following soybeans, 1/2 milk line
Row 1 – Stop 7 | Row 2 (Adjacent Row) | |||||
Ear Count | 33 | A | Ear Count | 30 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 18 | 35 | Ear 1 | 16 | 26 | |
Ear 2 | 14 | 37 | Ear 2 | 16 | 27 | |
Ear 3 | 16 | 35 | Ear 3 | 16 | 28 | |
Ear 4 | 14 | 34 | Ear 4 | 20 | 30 | |
Ear 5 | 18 | 27 | Ear 5 | 16 | 34 | |
Average Kernels/Ear | 534 | B | Average Kernels/Ear | 488 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 235 | Yield (15.5%) | 195 |
Stop 8: 61 bu/ac soybeans, rainfed, conventional tillage following soybeans in 15-inch rows
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
8 | 15 | 140 | 528 | 2.6 | 18 | 61 |
Region 2: Fillmore Flats
Stop 9: 198 bu/ac corn, rainfed, conventional-tilled following corn, 1/2 milk line.
Row 1 – Stop 9 | Row 2 (Adjacent Row) | |||||
Ear Count | 30 | A | Ear Count | 29 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 18 | 29 | Ear 1 | 16 | 34 | |
Ear 2 | 16 | 34 | Ear 2 | 18 | 26 | |
Ear 3 | 14 | 31 | Ear 3 | 16 | 37 | |
Ear 4 | 18 | 32 | Ear 4 | 16 | 36 | |
Ear 5 | 18 | 33 | Ear 5 | 14 | 37 | |
Average Kernels/Ear | 534 | B | Average Kernels/Ear | 540 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 200 | Yield (15.5%) | 196 |
Stop 10: 62 bu/ac soybeans, rainfed, no-till, following corn in 30-inch rows
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
10 | 30 | 80 | 515 | 2.7 | 18 | 62 |
Stop 11: 249 bu/ac corn, irrigated, no-till after soybeans, 1/2 milk line.
Row 1 – Stop 11 | Row 2 (Adjacent Row) | |||||
Ear Count | 34 | A | Ear Count | 32 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 34 | Ear 1 | 16 | 36 | |
Ear 2 | 14 | 40 | Ear 2 | 16 | 33 | |
Ear 3 | 18 | 35 | Ear 3 | 16 | 33 | |
Ear 4 | 16 | 34 | Ear 4 | 18 | 33 | |
Ear 5 | 16 | 35 | Ear 5 | 18 | 33 | |
Average Kernels/Ear | 568 | B | Average Kernels/Ear | 564 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 257 | Yield (15.5%) | 241 |
No picture for Stop 12
Stop 12: 63 bu/ac soybeans, no-till, following seed corn, 15-inch rows. No picture, but yield will be reduced by some SDS disease symptoms in areas.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
12 | 15 | 110 | 558 | 2.5 | 18 | 63 |
Stop 13: 235 bu/ac corn, irrigated, no-till following soybeans at 1/2 milk line
Row 1 – Stop 13 | Row 2 (Adjacent Row) | |||||
Ear Count | 32 | A | Ear Count | 32 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 32 | Ear 1 | 16 | 38 | |
Ear 2 | 16 | 37 | Ear 2 | 16 | 34 | |
Ear 3 | 18 | 32 | Ear 3 | 14 | 34 | |
Ear 4 | 14 | 35 | Ear 4 | 18 | 32 | |
Ear 5 | 18 | 30 | Ear 5 | 16 | 37 | |
Average Kernels/Ear | 542 | B | Average Kernels/Ear | 559 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 231 | Yield (15.5%) | 239 |
Stop 14: 58 bu/ac soybeans, irrigated, conventional-tilled following corn in 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
14 | 30 | 140 | 520 | 2.5 | 18 | 58 |
Stop 15: 189 bu/ac corn, rainfed, conventional-tilled following soybeans, 3/4 milk line.
Row 1 – Stop 15 | Row 2 (Adjacent Row) | |||||
Ear Count | 26 | A | Ear Count | 28 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 33 | Ear 1 | 18 | 35 | |
Ear 2 | 14 | 38 | Ear 2 | 16 | 40 | |
Ear 3 | 16 | 32 | Ear 3 | 14 | 30 | |
Ear 4 | 16 | 36 | Ear 4 | 16 | 38 | |
Ear 5 | 14 | 42 | Ear 5 | 16 | 35 | |
Average Kernels/Ear | 547 | B | Average Kernels/Ear | 572 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 178 | Yield (15.5%) | 200 |
Stop 16: 71 bu/ac soybeans, rainfed, no-till following corn, 15-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
16 | 15 | 70 | 645 | 2.6 | 18 | 71 |
Region 3: Nora Hills
Stop 17: 60 bu/ac soybeans, conventional-tilled, following corn, 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
17 | 30 | 170 | 565 | 2.3 | 18 | 60 |
Stop 18: 165 bu/ac corn, rainfed, no-till following soybeans, 1/2 milk line.
Row 1 – Stop 18 | Row 2 (Adjacent Row) | |||||
Ear Count | 28 | A | Ear Count | 29 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 14 | 30 | Ear 1 | 16 | 34 | |
Ear 2 | 14 | 31 | Ear 2 | 16 | 31 | |
Ear 3 | 12 | 31 | Ear 3 | 16 | 31 | |
Ear 4 | 14 | 29 | Ear 4 | 18 | 29 | |
Ear 5 | 16 | 32 | Ear 5 | 18 | 24 | |
Average Kernels/Ear | 429 | B | Average Kernels/Ear | 498 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 150 | Yield (15.5%) | 181 |
Stop 19: 182 bu/ac corn, rainfed, conventional-tilled following soybeans, 1/3 milk line.
Row 1 – Stop 19 | Row 2 (Adjacent Row) | |||||
Ear Count | 21 | A | Ear Count | 23 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 36 | Ear 1 | 18 | 32 | |
Ear 2 | 18 | 43 | Ear 2 | 18 | 40 | |
Ear 3 | 16 | 39 | Ear 3 | 18 | 35 | |
Ear 4 | 18 | 36 | Ear 4 | 14 | 35 | |
Ear 5 | 18 | 34 | Ear 5 | 16 | 35 | |
Average Kernels/Ear | 647 | B | Average Kernels/Ear | 595 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 181 | Yield (15.5%) | 183 |
Stop 20: 54 bu/ac soybeans, rainfed, no-till following corn, 15-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
20 | 15 | 100 | 508 | 2.4 | 18 | 54 |
Stop 21: 226 bu/ac corn, irrigated, no-till following corn, 1/3 milk line.
Row 1 – Stop 21 | Row 2 (Adjacent Row) | |||||
Ear Count | 31 | A | Ear Count | 33 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 33 | Ear 1 | 16 | 30 | |
Ear 2 | 16 | 33 | Ear 2 | 16 | 35 | |
Ear 3 | 18 | 32 | Ear 3 | 16 | 33 | |
Ear 4 | 18 | 31 | Ear 4 | 16 | 33 | |
Ear 5 | 18 | 31 | Ear 5 | 16 | 29 | |
Average Kernels/Ear | 550 | B | Average Kernels/Ear | 512 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 227 | Yield (15.5%) | 225 |
Stop 22: 80 bu/ac soybeans, irrigated, no-till following corn in 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
22 | 30 | 200 | 632 | 2.8 | 18 | 80 |
Region 4: Thurman Dunes
Stop 23: 212 bu/ac corn, irrigated, no-till following soybeans at 1/2 milk line.
Row 1 – Stop 23 | Row 2 (Adjacent Row) | |||||
Ear Count | 29 | A | Ear Count | 27 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 37 | Ear 1 | 16 | 38 | |
Ear 2 | 16 | 39 | Ear 2 | 16 | 36 | |
Ear 3 | 16 | 27 | Ear 3 | 16 | 34 | |
Ear 4 | 16 | 32 | Ear 4 | 16 | 36 | |
Ear 5 | 16 | 36 | Ear 5 | 16 | 40 | |
Average Kernels/Ear | 547 | B | Average Kernels/Ear | 589 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 212 | Yield (15.5%) | 212 |
Stop 24: 49 bu/ac soybeans, irrigated, no-till following corn in 30-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
24 | 30 | 90 | 463 | 2.2 | 17 | 49 |
Region 5: Moody Hills
Stop 25: 58 bu/ac soybeans, rainfed, conventional-tilled after corn, 30-inch row.s
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
25 | 30 | 140 | 532 | 2.4 | 18 | 58 |
Stop 26: 158 bu/ac corn, rainfed, no-till after soybeans at 3/4 milk line.
Row 1 – Stop 26 | Row 2 (Adjacent Row) | |||||
Ear Count | 23 | A | Ear Count | 25 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 35 | Ear 1 | 16 | 34 | |
Ear 2 | 16 | 31 | Ear 2 | 14 | 35 | |
Ear 3 | 18 | 35 | Ear 3 | 14 | 32 | |
Ear 4 | 16 | 34 | Ear 4 | 16 | 36 | |
Ear 5 | 14 | 39 | Ear 5 | 14 | 32 | |
Average Kernels/Ear | 555 | B | Average Kernels/Ear | 501 | B | |
Kernal Weight Factor | 80 | C | Kernal Weight Factor | 80 | C | |
Yield (15.5%) | 160 | Yield (15.5%) | 157 |
Stop 27: 167 bu/ac corn, rainfed, conventional-tilled after corn, 1/2 milk line.
Row 1 – Stop 27 | Row 2 (Adjacent Row) | |||||
Ear Count | 24 | A | Ear Count | 22 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 14 | 42 | Ear 1 | 16 | 35 | |
Ear 2 | 16 | 42 | Ear 2 | 16 | 36 | |
Ear 3 | 14 | 33 | Ear 3 | 16 | 38 | |
Ear 4 | 16 | 38 | Ear 4 | 18 | 33 | |
Ear 5 | 14 | 39 | Ear 5 | 16 | 38 | |
Average Kernels/Ear | 575 | B | Average Kernels/Ear | 589 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 173 | Yield (15.5%) | 162 |
Stop 28: 170 bu/ac corn, rainfed, no-till after soybeans at 1/3 milk line.
Row 1 | Row 2 (Adjacent Row) | |||||
Ear Count | 31 | A | Ear Count | 30 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 14 | 33 | Ear 1 | 12 | 36 | |
Ear 2 | 14 | 29 | Ear 2 | 14 | 30 | |
Ear 3 | 14 | 34 | Ear 3 | 16 | 26 | |
Ear 4 | 16 | 31 | Ear 4 | 14 | 34 | |
Ear 5 | 14 | 33 | Ear 5 | 12 | 35 | |
Average Kernels/Ear | 460 | B | Average Kernels/Ear | 433 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 178 | Yield (15.5%) | 162 |
Stop 29: 47 bu/ac soybeans, rainfed, no-till after corn, 15-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
29 | 15 | 120 | 427 | 2.4 | 18 | 47 |
Stop 30: 50 bu/ac soybeans, rainfed, no-till after corn, 15-inch rows.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
30 | 15 | 80 | 436 | 2.5 | 18 | 50 |
Region 6: Elkhorn River Valley
Stop 31: 183 bu/ac corn, rainfed, conventional-tilled after soybeans at 2/3 milk line.
Row 1 | Row 2 (Adjacent Row) | |||||
Ear Count | 24 | A | Ear Count | 28 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 16 | 34 | Ear 1 | 16 | 36 | |
Ear 2 | 16 | 37 | Ear 2 | 18 | 27 | |
Ear 3 | 16 | 38 | Ear 3 | 16 | 37 | |
Ear 4 | 16 | 40 | Ear 4 | 14 | 36 | |
Ear 5 | 16 | 30 | Ear 5 | 16 | 38 | |
Average Kernels/Ear | 573 | B | Average Kernels/Ear | 553 | B | |
Kernel Weight Factor | 80 | C | Kernel Weight Factor | 80 | C | |
Yield (15.5%) | 172 | Yield (15.5%) | 194 |
Stop 32: 237 bu/ac corn, irrigated, conventional-tilled after soybeans at 1/2 milk line.
Row 1 – Stop 32 | Row 2 (Adjacent Row) | |||||
Ear Count | 35 | A | Ear Count | 34 | A | |
Rows | Length | Rows | Length | |||
Ear 1 | 20 | 29 | Ear 1 | 16 | 36 | |
Ear 2 | 16 | 27 | Ear 2 | 18 | 35 | |
Ear 3 | 20 | 26 | Ear 3 | 18 | 28 | |
Ear 4 | 16 | 35 | Ear 4 | 16 | 28 | |
Ear 5 | 16 | 30 | Ear 5 | 18 | 24 | |
Average Kernels/Ear | 514 | B | Average Kernels/Ear | 518 | B | |
Kernel Weight Factor | 75 | C | Kernel Weight Factor | 75 | C | |
Yield (15.5%) | 240 | Yield (15.5%) | 235 |
Stop 33: 49 bu/ac soybeans, rainfed, no-till after corn.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
33 | 30 | 140 | 403 | 2.6 | 17 | 49 |
No picture for stop 34, however low plant population in this area of the field on Zook silt loam soils.
Stop 34: 39 bu/ac soybeans, irrigated, conventional-till after corn.
Stop | Row Spacing (inches) | Plant Population (k/ac) | Pods per 1/10,000 Acre | Seeds per Pod | Seed Size Factor | Final (bu/ac) |
34 | 15 | 40 | 361 | 2.6 | 18 | 39 |
Thanks for reading the entire report. Leave a comment below if you scrolled through this entire report for me!
Great report Nathan. Thanks for the intense work.
Everything is carefully, well done. thank you
Excellent work . Great info