Vegetable production

Effect of Nitrogen Rate, Timing, Placement, and Catch Crops on Yield and Nitrogen Utilization in Vegetable Crops



  • To evaluate the effect of several rates of applied N, as affected by timing and method of placement, on the yield of broccoli.
  • To determine the time of maximum broccoli uptake of applied N.
  • To determine how much of the applied N remains in the soil as nitrate at harvest and following winter rainfall.
  • To evaluate the efficiency of a winter cover/catch crop in capturing residual nitrate N.

Weed Management in Snap Beans, Peas, and Cucurbits (1991)


Report to the Oregon Processed Vegetable Commission

Ray Williams, Garvin Crabtree, Debra Boquist, Steven Eskelsen, and Ed Peachey
OSU Dept. of Horticulture

Research trials established in 1991 evaluated several weed management practices in snap beans, peas, and cucurbits. Much of the work reported was conducted in the Willamette Valley, although results of IR-4 pea residue and tolerance trials from 3 states are included.

Green Bean Breeding


Objectives: Breed bush green beans for the western Oregon processing industry with:

  • Improved potential for high yields at favorable sieve sizes and dependability.
  • Improved straightness, texture, and other quality factors.
  • Develop easy picking and small pod strains of Blue Lake type.
  • Resistance to white mold and root rot.

Fungicide resistance in Botrytis cinerea in snap beans, and chemical and biological control of gray and white mold of snap beans



  • Determine the distribution and frequency of benomyl and vinclozolin/iprodione resistance in the Botrytis population in snap bean fields located in the Willamette Valley.
  • Evaluate the efficacy of experimental fungicides for control of gray mold and white mold of snap beans.
  • Evaluate the efficacy of biological antagonists for control of gray mold of snap beans.