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Planting data and wheat yield models. [kansas, south dakota, and u.s.s.r.
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1977 |
| Description | The author has identified the following significant results. A variable date starter model for spring wheat depending on temperature was more precise than a fixed date model. The same conclusions for fall-planted wheat were not reached. If the largest and smallest of eight temperatures were used to estimate daily maximum and minimum temperatures; respectively, a 1-4 F bias would be introduced into these extremes. For Kansas, a reduction of 0.5 bushels/acre in the root-mean-square-error between model and SRS yields was achieved by a six fold increase (7 to 42) in the density of weather stations. An additional reduction of 0.3 b/A was achieved by incorporating losses due to rusts in the model. |
| File Size | 2184675 |
| Page Count | 89 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780002595 |
| Archival Resource Key | ark:/13960/t8md3qq1f |
| Language | English |
| Publisher Date | 1977-09-01 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Large Area Crop Inventory Experiment Tables Data South Dakota U.s.s.r. Erep Skylab Program Models Yield Kansas Weather Stations Wheat Planting Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
