| タイトル | Evaluation of spring wheat and barley crop calender models for the 1979 crop year |
| 本文（外部サイト） | http://hdl.handle.net/2060/19810020970 |
| 著者（英） | Nazare, C. V.; Carnes, J. G. |
| 著者所属（英） | Lockheed Engineering and Management Services Co., Inc. |
| 発行日 | 1981-02-01 |
| 言語 | eng |
| 内容記述 | During the Large Area Crop Inventory Experiment, spring wheat planting date and crop development stage estimates based on historical normals were improved by the use of the Feyerherm planting date and Robertson spring wheat crop calendar models. The Supporting Research Crop Calendar Project element modified the Robertson model to reduce bias at cardinal growth stages within the growing season. These models were tested in 1980 along with a state-of-the-art barley model (Williams) against a ground-truth data set from 49 calendar year 1979 segments in the U.S. Great Plains spring wheat and barley region. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 81N29508
E81-10197
LEMSCO-15936
FC-L1-04030
NASA-CR-160977
JSC-16850 |
| 権利 | No Copyright |
