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Publication
Flore adventice de vergers de poirier
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Advisor(s)
Abstract(s)
Parmi plusieurs especes d'adventices recencees dans les releves floristiques effectues dans les vergers de poirier des regions du Ribatejo, de l'Oeste et de Beira Interior, les Legumineuses, les Composees et les Graminees sont les plus representatives. Les especes ont ete classees en trois categories salon leur frequence relative : superieure a 75%, comprise entre 50 et 75%, et comprise entre 25 et 50%. On a analyse les profils ecologiques des frequences corrigees pour les 20 especes, ayant une information mutuelle plus elevee pour les facteurs ecologiques suivants: "rsgion", "texture", "pH (H20)" ."P205 assimilable" et "K20 assimilable".
Among several adventitious species registered in flora records of pear orchards at Ribatejo Oeste and Beira Interior (Portugal), we can point out, according to their number, the Legiminous plant family, Composite and Graminaceous. A few species take a special place when representing at 75% or between 50-75% and between 25-50%. We analysed the ecological profil in corrected frequencies for 20 species - which reached higher mutual information - for the ecological factors : "area", "texture", "pH (H20)", "assimilated P205" and "assimilated K20".
Among several adventitious species registered in flora records of pear orchards at Ribatejo Oeste and Beira Interior (Portugal), we can point out, according to their number, the Legiminous plant family, Composite and Graminaceous. A few species take a special place when representing at 75% or between 50-75% and between 25-50%. We analysed the ecological profil in corrected frequencies for 20 species - which reached higher mutual information - for the ecological factors : "area", "texture", "pH (H20)", "assimilated P205" and "assimilated K20".
Description
Keywords
flore adventice vergers adventitious flora orchards
Citation
Vasconcelos, T.; Santos, F.; Franqueira, J.H. & Filipe, N. (1990). Flore adventice de vergers de poirier. Proceedings of the International Colloquium "Integrated Protection in Fruit Orchards", September 12-15 1989, Alcobaça. pp. 58-62