Vegetable production

Evaluation of supersweet corn varieties for the Treasure Valley



The project evaluates new supersweet and sugary-enhanced sweet corn varieties to identify superior plant materials. Varieties are evaluated for

  • Reliability in plant stand establishment.
  • Uniformity of maturity date.
  • Resistance to lodging.
  • Acceptability for yield and ear conformation.
  • Processing quality.

Determine the length of harvest period possible with a limited number of varieties.

Effects of nitrogen fertilizer rates and tillage treatments (soil compaction) on carrot root yields and root characteristics



  • To evaluate effects of supplemental nitrogen rates, in addition to growers base rates, on yield and root characteristics.
  • To evaluate effects of four or five tillage treatments that result in various degrees of soil compaction on carrot root growth and yield of two varieties (O.S.U. Vegetable Research Farm).

Development of corn earworm, Heliothis zea, on corn in Oregon



  • Refine corn earworm monitoring techniques using pheromone and black light traps.
  • Continue developing a statewide pheromone trapping program.
  • Study earworm flight and infestation trends that can be used to predict damaging infestations.
  • Develop corn earworm and sweet corn development models.
  • Conduct insecticide trials to determine if and when sprays are most effectively used.
  • Incorporate relevant information into a damage prediction model that can be used for management purposes.

Cutworm Control in Processed Beets (1987)


Report to the Oregon Processed Vegetable Commission

Glenn Fisher, R. Berry, and K. West
OSU Dept. of Entomology


  1. Determine which species of cutworms are pests in table beets.
  2. Determine if pheromone trap catches can be used to predict cutworm problems and time control measures.
  3. Evaluate the use of sweep net sampling, egg sampling, soil surface sampling and early leaf feediyy to predict root damage and time control measures.