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Thesis (M.S.)—University of Nebraska—Lincoln, 1964. Department of Agronomy.


Copyright 1964, the author. Used by permission.


Weed control has been one of the major problems in the culture of castorbeans (Ricinus communis L.) Many acres of castorbeans are annually abandoned or replanted due to severe weed infestations. Castorbeans ordinarily do not emerge for two to three weeks, which allows weed seedlings to become well established before castorbeans are competitive. Current methods of weed control in castorbeans include cultivation, rotary hoeing, preemergence herbicides, and hand hoeing. However, hand hoeing is very expensive and other methods are extremely dependent on weather conditions. Existing methods should be improved and new methods introduced to aid in the overall weed control program for castorbeans.

Flame cultivation is a possible weed control aid for castorbeans. In order to gain more knowledge about flame cultivation, laboratory, greenhouse, and field studies were initiated.

Advisor: Orvin C. Burnside