Identification of weeds from digital images

Publication Type

Contribution to conference

Authors

Weis, M. and Gerhards, R.

Year of publication

2007

Published in

Agricultural Field Trials - Today and Tomorrow

Editor

Bleiholder, Hermann and Piepho, Hans-Peter

Pubisher

Verlag Grauer , Beuren, Stuttgart

ISBN / ISSN / eISSN

978-3-86186-541-4

Page (from - to)

258-263

Conference name

Landwirtschaftliches Versuchswesen -- heute und morgen

Conference location

Stuttgart-Hohenheim

Conference date

08.-10. October 2007

Weed control is one of the classical treatments in many kinds of agricultural
production systems. Site-specific weed control based on weed maps has raised
interest in the precision farming community in the last years. Weeds are spatially
inhomogeneous in their distribution in the field (Gerhards et al., 1997, Mortensen
et al., 1998, Gerhards & Christensen, 2003). High weed densities in patches
alternate with lower or no weed density in other areas. The patches remain stable
over years due to high local seed densities in seed banks (Wilson & Brain, 1991).
Management zones can be set up based on information about the weed distribution.
A high weed density has a negative influence on the yield of the cultivated crop.
Weed can be controlled with herbicide applications. The estimation of the weed
distribution is a crucial step for the creation of weed density maps and the site-
specific management. Site-specific herbicide application can be used to manage
weeds according to their abundance and variability.