Zobrazeno 1 - 8
of 8
pro vyhledávání: '"John D.H. Lambert"'
Autor:
J.K. Torrance, Bernard R. Baum, Awegechew Teshome, Lenore Fahrig, John D.H. Lambert, T.J. Arnason
Publikováno v:
Economic Botany. 53:79-88
We quantitatively examined the relationships between Sorghum landrace diversity at the field level and environmental factors and farmers’ selection practices in north Shewa and south Welo regions of Ethiopia. Surveys were conducted on 260 randomly
Autor:
J. Kenneth Torrance, J. Thor Arnason, Lenore Fahrig, Bernard R. Baum, John D.H. Lambert, Awegechew Teshome
Publikováno v:
Economic Botany. 53:69-78
Traditional knowledge of grain storage was studied on small farms in Ethiopia. Sixteen of sixty landraces of sorghum collected from small farms in Shewa and Welo regions of Ethiopia were identified by the farmers as being stored sorghum landraces. Fa
Publikováno v:
Euphytica. 97:255-263
Fourteen phenotypic characters were chosen for the purpose of obtaining taxonomic evidence on the resemblances of 177 accessions of sorghum from North Shewa and South Welo regions of Ethiopia. Canonical Discriminant Analysis (CDA) and Modeclus cluste
Autor:
K. Davidson, John T. Arnason, P. Morand, A. Serratos, C. Nozzolillo, John D.H. Lambert, Jeffrey Atkinson, L. Peacock, G. Fulcher, Bernard J. R. Philogène
Publikováno v:
Journal of Chemical Ecology. 13:751-762
Factors contributing to resistance of maize to infestation by the corn weevilSitophilus zeamais were investigated in four populations of indigenous and improved maize from Belize. Resistance was related to the antifeedant properties of grain as well
Publikováno v:
Journal of Economic Entomology. 80:1192-1196
Intercropping of corn with clover significantly reduced European corn borer (ECB), Ostrinia nubilalis (Hubner), damage compared with mono cropped corn at the same planting density. Planting clover after corn reduced ECB damage at two experimental sit
Autor:
M. Hudon, P. Morand, N. Donskov, G. Fortier, C. McDougall, D. Gardner, John T. Arnason, Catherine E. Morris, Bernard J. R. Philogène, C. Nozzolillo, John D.H. Lambert
Publikováno v:
Entomologia Experimentalis et Applicata. 38:29-34
Azadirachtin, a triterpenoid substance from the neem tree, Azadirachta indica A. Juss., Meliaceae, was evaluated for its antifeedant and insecticidal properties to the European corn borer Ostrinia nubilalis Hubner. The 50% protective concentration fo
Publikováno v:
Canadian Journal of Development Studies / Revue canadienne d'études du développement. 5:213-232
The practice of intercropping, the growing of two or more crops simultaneously in the same field is reviewed in this article. Intercropping, which developed as a traditional agriculture practice of small farmers of the tropics, has proved to be a hig
Autor:
John D.H. Lambert, J. T. Arnasson
Publikováno v:
Canadian Journal of Development Studies / Revue canadienne d'études du développement. 4:259-274
In the course of the development of agriculture, man created agro-ecosystems that were different from self-sustained natural ecosystems. The Maya apparently practised at least three forms of agriculture in Belize: slash-and-burn, drained and raised f