نتایج جستجو برای: pest population monitoring
تعداد نتایج: 985802 فیلتر نتایج به سال:
We use discrete time models to represent the dynamics of two interacting populations, a “valuable” population and a “pest” population. We investigate optimal control in the form of decreasing the growth rate of the “pest” population with the goal of maximizing the “valuable” population while minimizing the cost of the control. We compare different types of growth functions for the “valuable” po...
Pest-free status certification is desirable if the demand-side impacts (increased export revenue) and supply-side impacts (lower pest damage and decreased ongoing control costs) exceed the compliance monitoring and eradication costs. Thus, eradication may be optimal without certification. Certification is more likely for regions facing costly treatment requirements (bans) or possessing geograph...
Invasive insect pests cost the agricultural industry billions of dollars annually in crop losses. Timely detection of pests is critical for management efficiency. Innovative pest detection strategies, such as environmental DNA (eDNA) techniques, combined with efficient predators, maximize sampling resolution across space and time and may improve surveillance. We tested the hypothesis that tempe...
We study a reaction-diffusion-advection model for the dynamics of populations under biological control. A control agent is assumed to be a predator species that has the ability to perceive the heterogeneity of pest distribution. The advection term represents the predator density movement according to a basic prey taxis assumption: acceleration of predators is proportional to the prey density gr...
Assessing the integrated pest management practices of southeastern US ornamental nursery operations.
BACKGROUND The Southern Nursery Integrated Pest Management (SNIPM) working group surveyed ornamental nursery crop growers in the southeastern United States to determine their pest management practices. Respondents answered questions about monitoring practices for insects, diseases and weeds, prevention techniques, intervention decisions, concerns about IPM and educational opportunities. Survey ...
The codling moth Cydia pomonella (L.) (Lepidoptera Tortricidae) is one of the key pests in apple and pear trees and its high harmfulness on the fruits requires a strongly effective pest management. Among the pest control strategies adopted in the years, nowadays integrated pest management (IPM) represents one of the most diffused methods and it requires pest monitoring by means of sex pheromone...
Native to North America, the blueberry maggot fly, Rhagoletis mendax Curran (Diptera: Tephritidae), has historically been considered one of the most important insect pests of commercially grown highbush and lowbush blueberries in many parts of the northeastern and north central United States and Canada. Larval infestation results in unmarketable berries owing to a zero-tolerance policy enforced...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید