We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Dynamique de quelques dicotylédones adventices en culture de cér&ecaute;ale. II. Survie, floraison et fructification.
- Authors
Debaeke, P.
- Abstract
Knowledge of the evolution of weed flora is useful for planning chemical and cultural control methods for a single crop or successive crops. However, this has not been much studied with regard to annual broad-leaved weeds in cereals. Therefore, plant survival and final production (dry weight, seed number) for some weed species were studied, in cereals (mainly in winter wheat, cv. Fidel). Fifty-eight plots from the experimental area at Grignon, near Paris, have been observed for 2 successive years. The results refer to natural, sparse, weed communities, mainly composed of annual broad-leaved species. The growth stage of the weeds at the beginning of frosty weather is a good predictor of the winter loss rate. The cereal ear number per m² accounts satisfactorily for the spring weed density. However, the emergence date of the seedlings partly governs their survival and seed production. A good relation is shown between seed number and dry weight (per plant and per m²) at crop harvest. The management of the crop (sowing date and density, nitrogen level), together with the weather, effectively controls the development of the flora. This work should make it possible to model weed population dynamics in a cultural system.
- Subjects
WEED control; VEGETATION management; CROPS; GRAIN; PLANT species; PLANT communities; SEEDLINGS
- Publication
Weed Research, 1988, Vol 28, Issue 4, p265
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1988.tb00804.x