This project has 8 distinct treatments (12 if you separate by corn and soybeans). In treatments 1, 2, 5, and 6, plots will alternate between corn and soybeans every other year. The crop growing in plots of those treatments is denoted in the data files by “1S”, “1C”, etc.
2021 Treatment table
Here’s a summary of the treatments in 2021:
System | Application Timings and Souce of N | Crop in 2021 | Plot | Tillage | N Rate (lb/ac) |
---|---|---|---|---|---|
1 | Spring UAN | Soy Corn |
29, 10, 15 28, 3, 24 |
No-till | 0 150 |
2 | Spring Manure | Soy Corn |
30, 1, 17 27, 11, 23 |
No-till | 0 150 |
3.1 | Fall Manure | Continuous Corn | 18, 4, 33 | Strip-till | 200 |
3.2 | Fall Manure | Continuous Corn + Early Interseeded Cover |
32, 6, 36 | Strip-till | 200 |
4.1 | Fall Manure | Continuous Corn + PGC |
5, 21, 26 | Strip-till | 200 |
4.2 | Fall Manure | Continuous Corn 60’’ rows + Early Interseeded Cover |
22, 13, 35 | Strip-till | 200 |
5 | Fall Manure | Soy + Cereal Rye Corn + Cereal Rye |
19, 9, 8 17, 12, 34 |
No-till | 0 150 |
6 | Fall Manure | Soy Corn |
20, 2, 16 31, 14, 25 |
No-till | 0 150 |
Here’s a view of how the plots are oriented:
Each plot is 1 acre.
Photos of the Treatments in 2021
Treatment 3.2: 30 inch rows, interseeded cover crops
Treatment 4.1: Perennial Groundcover
Treatment 4.2: 60 inch rows, interseeded cover crops