insects, but the economic threshold concept is the basis of most weed management decision models available to growers. A World … Wide Web survey was conducted to investigate perceptions of weed science professionals regarding the value of these models … indicated that models are too simple because they do not include all factors that influence weed competition or all issues a …

management, was designed to find a long-term method of control of Phalaris minor, a problem weed of the rice–wheat cropping … system of north-western India. By 1993, the weed had developed resistance to isoproturon, a herbicide which had delivered … effective weed control for 15 years. The short-term solution, implemented before the ACIAR project commenced, involved …

Dynamic and static weed control decision rules are derived analytically and compared. The dynamic rule leads to … increased farm profits and greater control of weeds and weed seeds than the static rule, while total herbicide use is unchanged …. Incorporating weed dynamics into weed control strategies increases farm profits between 1.0 and 1.4%. © 2001 Elsevier Science B …

of weed management scenarios to obtain greater insight into its value for mixed farming systems in this region. A … stochastic search procedure, compressed annealing, is used to identify profitable sets of weed management strategies in a … simulation model representing a large number of potential combinations of chemical and non-chemical forms of weed control. In …

stocking rate, increase mustering effort, and impede cattle access to waterways. Two major concerns of woody-weed management … are the high cost of weed management with respect to grazing gross margins, and episodic seedling recruitments due to … climatic conditions. This case study uses a Stochastic Dynamic Programming (SDP) model to determine the optimal weed management …

This study examines soybean grower adoption of the Roundup Ready® (RR) weed management program with and without a … residual herbicide application, and grower concerns regarding weed resistance to herbicides using telephone survey data from of …. More than half (53%) of the growers survey were concerned about weed resistance. The estimated expected benefit of the RR …