Vegetable production

Overwinter Leek Variety Trial, 1984-1985

Extremely high quality leeks are being produced on a small scale in the Willamette Valley with good yields. The crop is usually seeded in early spring, matures in autumn, and can be held through the winter for harvest the following spring. Very few varieties are grown commercially and the highest quality plants have been transplanted and grown in trench culture. The most lucrative market is the restaurant trade, which demands long, thick, blanched stems. Healthy foliage can also be used decoratively in presentation of restaurant dishes.

Summary of Onion Trials and Recommendations (1987)

1. Varieties. Overwinter varieties must be winter-hardy and resistant to bolting after exposure to cold weather. They should be able to stand several months of light frosts and short periods as low as 0 oF. Bulb formation must start when daylength is between 10 and 13 hours. Storage quality is not of great importance since the crop should be marketed before the spring-seeded crop matures in September.

Overwintered Onion Weed Control Trial, 1985-1986

The major cultural problem in overwintered onion production is weed control. Onions are a slow-growing crop which competes poorly with weeds. Since the crop is in the ground for eight or nine months, and cultivation is nearly impossible during the winter rainy season, both good weed control at planting and good postemergence control are necessary. The weed control task has been made more difficult by the loss of registration of effective preemergence herbicides such as propachlor.

Effect of N Source on Yield of Overwintered Onions, 1984-1985

In the N source trial, the number of bulbs harvested per plot varied significantly with treatment, but the stands may have varied before the treatments were applied (Table 4). Total yield varied with N source, but the differences were not directly proportional to stand differences. Mean bulb weight and percent No. 1 bulbs were greatest with ammonium sulfate, in spite of a greater than average stand. They were lowest with ammonium chloride, in spite of a low stand. The high percentage of No.

VegNet Regional Pest Monitoring Program Report (2009)

Report to the Oregon Processed Vegetable Commission

Dan McGrath
OSU Dept. of Horticulture

COOPERATORS: Manual Silveira and Jim Gill, NORPAC; Wayne Parker, Jason
White, and Neil MacInnes, National Frozen; Jon Brown, Truitt Bros; Larry and Ron
Pearmine Farm, Richard and Delbert Haener Farms, Mark and Mike Dickman Farm,
Skip Gray Farm, Matt and Gary Cook Farm, Hendricks Brothers Farm, Tom and Sam
Sweeney Farm. Technical support for this project was provided by Lydia Brown, OSU
Department of Horticulture.

Energy audits to identify opportunities for processed vegetable growers to save electricity, fuel, and fertilizer

Tractor image: John Luna

The goal: to develop a comprehensive list of likely efficiency opportunities that might be found in the processed vegetable growing sector, along with templates for analyzing and presenting opportunities. As it is prepared, this content is being put on line for use by EEC staff as well as the general public. Some of the content that has been developed is included at the end of this report.