[article]
| Titre : |
Germination and Establishment of Juncus Effusus L., II. The Interaction Effects of Moisture and Competition |
| Type de document : |
texte imprimé |
| Auteurs : |
Alec Lazenby, Auteur |
| Année de publication : |
1955 |
| Article en page(s) : |
pp. 595-605 |
| Langues : |
Anglais (eng) |
| Catégories : |
[Espèces (in biblio)] Juncus effusus
[Thèmes] Germination des graines
|
| Mots-clés : |
semis sol agricole graminée semence trèfle sol à texture grossière compactage du sol |
| Résumé : |
"1. In order to study the effects of available moisture on germination and early establishment of Juncus effusus, and of competition under these conditions, seeds of J. effusus were sown at different water-tables alone and with two mixtures of grass and clover. 2. There were great differences in the numbers of Juncus plants establishing under different conditions of available moisture. At the end of the first experiment 540 seedlings were removed from all mixtures sown with the water-table up to the soil surface, whilst no seedlings established under the very dry conditions produced by a water-table 8 in. (20 cm.) below the soil surface. 3. Sown species had less influence on initial establishment of Juncus seedlings than had available moisture. There were, however, considerable differences in the effects of companion species on subsequent development of the seedlings. The mean weights of seedlings removed from pots of J. effusus sown alone, J. effusus + Lolium perenne + Trifolium repens, and Juncus effusus + Agrostis tenuis + Trifolium repens--all with a water-table up to the soil surface--were 96.9, 13.3 and 12.6 gm. respectively, whilst the mean numbers of seedlings removed were 37.0, 28.2 and 24.2. 4. Counts of plant numbers and air-dry weights were taken of the species sown with Juncus effusus and a comparison has been made of the relative germination and subsequent development of these species in relation to J. effusus under different conditions of available moisture. 5. The discussion includes a short account of the practical importance of these results particularly in relation to the data presented in an earlier paper." (Lazenby, 1955). |
| Type de publication : |
périodique |
| Référence biblio : |
Lazenby A., 1955 - Germination and Establishment of Juncus Effusus L., II. The Interaction Effects of Moisture and Competition. Journal of Ecology, 43 (2) : 595-605. |
| ID PMB : |
69084 |
| DOI : |
10.2307/2257013 |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69084 |
in Journal of Ecology > Vol. 43, n°2 (Année 1955) . - pp. 595-605
[article]
|
Germination and Establishment of Juncus Effusus L., II. The Interaction Effects of Moisture and Competition in Journal of Ecology, Vol. 43, n°2 (Année 1955)