Title page for ETD etd-06302009-040447

Type of Document Master's Thesis
Author Ackley, John A.
URN etd-06302009-040447
Title Efficacy and selectivity of the herbicide rimsulfuron in potatoes [Solanum tuberosum], transplanted tomatoes [Lycopersicum esculentum], and transplanted peppers [Capsicum annum]
Degree Master of Science
Department Weed Science
Advisory Committee
Advisor Name Title
Wilson, Henry P. Committee Chair
Hagood, Edward Scott Jr. Committee Member
Morse, Ronald D. Committee Member
  • Plants
Date of Defense 1994-04-06
Availability restricted

Rimsulfuron {N-[[ 4,6-dimethoxy-2-pyrimidinal)amino ]carbonyl]-3-( ethylsulfonyl) -2-pyridinesulfonamide} is a new sulfonylurea herbicide under development by E.I. Dupont de· Nemours & Company Inc. for preemergence and postemergence grass and broadleaf weed control in Solanaceous vegetable crops. The efficacy and selectivity of rimsulfuron were determined in potatoes, transplanted tomatoes, and transplanted peppers in field studies in 1991, 1992, and 1993.

Treatments included rimsulfuron and metribuzin alone and in combination in potatoes and tomatoes, rimsulfuron alone in peppers, and sequential applications of rimsulfuron in tomatoes and peppers. Application timings included preemergence and postemergence in potatoes, while only post-transplant applications were evaluated in tomatoes and peppers. Preemergence applications of rimsulfuron controlled weeds if rainfall was received within a few days following application. Control was often greater in potatoes and tomatoes than in peppers. These differences likely relate to more frequent rainfall events in potatoes and tomatoes than in the later-planted peppers.

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