Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Catchot, Angus
Committee Member
Gore, Jeff
Committee Member
Golden, Bobby
Committee Member
Cook, Don
Committee Member
Krutz, Jason
Date of Degree
5-3-2019
Original embargo terms
Worldwide
Document Type
Graduate Thesis - Open Access
Major
Agricultural Life Sciences
Degree Name
Master of Science
College
College of Agriculture and Life Sciences
Department
Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology
Abstract
Experiments were conducted to determine the impact of water management strategies on populations of rice water weevil, Lissorhoptrus oryzophilus Kuschel. One experiment was conducted at the Delta Research and Extension Center during 2017 and 2018. The performance of chlorantraniliprole and thiamethoxam was evaluated in combination with flood removal of a field as a cultural control tactic for rice water weevil. Seed treatments significantly reduced rice water weevil populations at the prelood sample timing, only chlorantraniliprole reduced populations at the post-drainage sample timing. Overall, flood removal had little impact on rice water weevil management. An experiment was also conducted to determine the spatial and temporal distribution of rice water weevil larvae within a furrow irrigated rice production system. This experiment was established across eleven grower fields in major rice producing counties across the Mississippi Delta from 2017 to 2018. Fields were divided into three zones based on free standing water within that portion of the field between irrigation events. Rice water weevil larval populations were reduced in portions of the field that did not remain at two of the three sample timings. An experiment was conducted at the Delta Research and Extension Center during 2017 to determine the impact of various water management strategies and insecticide seed treatments on rice water weevil populations. The –10 cm free standing water management strategy significantly reduced rice water weevil populations from the untreated control. Chlorantraniliprole had significantly higher yields across all water management strategies compared to other seed treatments and the untreated control.
URI
https://hdl.handle.net/11668/21219
Recommended Citation
Kelly, Franklin Read, "Impact of Water Management Strategies on Populations of Rice Water Weevil, (Coleoptera: Curculionidae)" (2019). Theses and Dissertations. 2614.
https://scholarsjunction.msstate.edu/td/2614