Fifty-three preliminary OSU breeding lines along with Savannah, 91G, OR54, OSU 5630, and OSU 5669 as checks were processed in the 2009 OSU Preliminary Breeding Trial. In the Commercial Trial, seventeen commercial selections were processed along with four checks:. OR 91G, OR 54, OSU 5630, and OSU 6443.
Objective: Identify sweet corn hybrids with suitable processing quality that have high, stable yields and tolerance to root rot disease complex.
Drift or volatilization of chlorophenoxy herbicides with resultant damage to non-target plants is an increasing problem in the Willamette Valley. The number of damage claims is increasing each year despite growing regulation and training of growers and applicators. The effects of lethal doses of the chlorophenoxy 2,4-D on broadleaf plants are well-known, but except for a few crops such as tomatoes and grapes, the effects of sublethal doses have not been well documented.
The purpose of this study was to investigate the effect of several combinations of soil pH and nitrogen fertilizer rates on yield and mineral uptake of bush beans, carrots, and crisphead lettuce. Of particular concern are the nutrient elements potassium, calcium, phosphorus, magnesium, zinc, and copper, and heavy metals such as manganese which may be toxic to plants if present in sufficient quantity. Optimal soil pH levels are not well known for many vegetable crops and probably vary with soil type, cation exchange capacity, amount of organic matter etc.
The purpose of this project was to obtain and evaluate varieties of cauliflower for summer harvest. The major desired quality is heat tolerance: the ability to withstand high temperatures without ricing and to maintain the high curd quality typical of autumn-harvested cauliflower. A second desired quality is long wrapper leaves for self-blanching.
Twelve lines of cauliflower were direct-seeded on July 13, 1977, with the purpose of overwintering several European cultivars for spring harvest. In addition some other lines were included for comparison. Lines or varieties were as follows: M1, M2, M3, and M4 from Moran Seed Co., Snow Crown from Harris Seed Co., Armado April, Armado May, Armado Quick, Armado Tardo, June, and Markanta Walcherin from Elsoms Seeds Ltd., and Pinnacle from Asmer Seed Co. Plot size was 24 row feet containing about 25 plants.
Methods
Research report from OSU's North Willamette Agricultural Research and Extension Center
Delbert Hemphill and V. Van Volk
OSU Dept of Horticulture, NWREC
Poor stand establishment is often a limiting factor in vegetable production in the Willamette Valley. Carrots, onions, and lettuce, in particular, often fail to emerge because of soil crusting. Most small-seeded crops lack the vigor necessary to emerge when resisted by significant soil impedance. A high degree of impedance or crusting (also known as soil mechanical resistance) is caused by breakdown of soil particle aggregates. Several treatments exist which may reduce the breakdown of aggregates.