Preliminary measurements of grain wasted by field-feeding mallards / by Lawson G. Sugden and D. Wayne Goerzen. : CW69-9/104E-PDF
"When waterfowl, particularly ducks, feed on swathed grain they not only eat the grain but also waste some by trampling and fouling. To the farmer who loses both ways, it matters little whether the grain is eaten or wasted. It is, however, of concern to the crop protection manager, who tries to make the most efficient use of lure crops, and who must evaluate feeding programs in terms of benefit/cost"--Introd.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.849652&sl=1
| Ministère/Organisme | Canada. Environment Canada. Canadian Wildlife Service. |
|---|---|
| Titre | Preliminary measurements of grain wasted by field-feeding mallards / by Lawson G. Sugden and D. Wayne Goerzen. |
| Titre de la série | Progress notes ; no. 104 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Autres langues publiées | [Français] |
| Format | Électronique |
| Document électronique | |
| Note(s) | "November 1979." Issued also in French under title: Estimations préliminaires du gaspillage de grains par les canards malards qui s'alimentent dans les champs. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. |
| Information sur la publication | [Ottawa] : Canadian Wildlife Service, 1979. |
| Auteur / Contributeur | Sugden, Lawson G. Goerzen, D. Wayne. |
| Description | 5 p. : charts |
| Numéro de catalogue |
|
| Descripteurs | Birds Grains Measurement |