| タイトル | Integration of environmental and spectral data for sunflower stress determination |
| 本文（外部サイト） | http://hdl.handle.net/2060/19830014417 |
| 著者（英） | Lillesand, T.; Seeley, M. |
| 著者所属（英） | Minnesota Univ. |
| 発行日 | 1983-01-31 |
| 言語 | eng |
| 内容記述 | Stress in sunflowers was assessed in western and northwestern Minnesota. Weekly ground observations (acquired in 1980 and 1981) were analyzed in concert with large scale aerial photography and concurrent LANDSAT data. Using multidate supervised and unsupervised classification procedures, it was found that all crops grown in association with sunflowers in the study area are spectrally separable from one another. Under conditions of extreme drought, severely stressed plants were differentiable from those not severely stressed, but between-crop separation was not possible. Initial regression analyses to estimate sunflower seed yield showed a sensitivity to environmental stress during the flowering and seed development stages. One of the most important biological factors related to sunflower production in the Red River Valley area was found to be the extent and severity of insect infestations. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 83N22688
E83-10211
NASA-CR-167834
NAS 1.26:167834
REPT-0663-5551 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/162864 |
