Technical Report
 

Horticultural weed control : 1999 report

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https://ir.library.oregonstate.edu/concern/technical_reports/7p88cq322

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  • Crops were grown at the experimental farms using accepted cultural practices (within the limits of experimentation) or trials were conducted on growers' fields. Most experiments were designed as randomized complete blocks with three to five replications. Herbicide treatments were applied uniformly with precision plot sprayers. Unless otherwise indicated, preplant herbicide applications were incorporated with a PTO horizontal rotary tiller operated at a depth of approximately two inches. After critical application stages, crops were irrigated with overhead sprinklers at weekly intervals or as needed. Crop and weed responses are primarily visual evaluations of growth reduction, ranging from 0-100 with 100 as the maximum response for each rating. Phytotoxicity ratings are usually 1-10 with 10 being severe herbicide injury symptoms such as chlorosis or leaf deformation. Additional data such as crop yields are reported for certain studies and may be reported in either English or metric systems.
  • Data contained in this report are compiled annually as an aide to complete minor crop registrations for horticultural crops and to communicate our results to colleagues and funding sources. Data are neither intended nor authorized for publication. Information and interpretation cannot be construed as recommendations for application of any herbicide or weed control practice mentioned in this report.
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