The VegNet regional pest monitoring program sponsored by the Oregon Processed Vegetable Commission has been fruitful.The program has, on occasion,saved growers money by providing
growers and agricultural professionals with early warnings
of insect pest outbreaks. The combination of regional pest
monitoring plus field scouting has allowed growers, in some cases,...
New highly polymorphic simple sequence repeat (SSR) markers for European hazelnut (Corylus avellana L.). were developed from several sources. The markers were characterized, and segregation in a mapping population allowed to assign them to linkage groups. Their transferability across genera and species in the Betulaceae family was investigated. SSR markers...
Energy input comparisons between tillage systems; evaluation of the value of legumes as part of a cover crop mixture used in strip-till sweet corn production; evaluation of the nitrogen contribution of legume-based cover crops to organic vegetable production.
Sclerotinia sclerotiorum (Lib.) de Bary is a necrotrophic pathogen capable of causing white mold, a severe disease in common bean. White mold is of particular concern to the Oregon snap bean processing industry, where processors allow less than
3% incidence in harvested shipments. Breeding for white mold resistance in beans...
Though the data from the Research Evaluation does show how the new lines are doing and which crosses are the most promising, the low number of evaluators does not lead to statistically significant analysis of the results.
An alternative to traditional roofing, extensive green roofs are contained ecosystems consisting of a drainage layer, a thin media profile which is planted with hardy plant species. Extensive green roof plants must maintain multiple functions while growing in a highly aggregate media at a depth of equal to or less...
As the 2009 growing season comes to a close, we prepared this newsletter to provide information on several viticulture and enology issues important to the Oregon winegrape industry. We begin with the most immediate topic of this season – wine production with Dr. James Osborne and importance of wine superstars...
Nitrogen use varies dramatically among crops. Short season crops with relatively small
biomass accumulation will not need as much nitrogen for growth as long season corn varieties
that develop a large canopy. The recent introduction of sweet corn hybrids that tolerate root rot
may reduce N fertilizer need. Hybrids such...
Objective 1: Evaluate sweet corn inbred germplasm for colonization of silks by Fusarium species and subsequent seed infection/contamination.
Objective 2: Evaluate biological applications to silks and subsequent Fusarium presence in ears.
Objective 3: Evaluate seed disinfestation and location of remaining Fusarium on or in seed.
Objective 4: Examine the yield...
This project is investigating whether low rate (goal: one pound per acre) early fall Contans applications to flailed diseased residues left on the soil surface can increase Cm inoculum and reduce Ss sclerotial viability.
Legume cover crops can serve as important sources of nitrogen (N) in sustainable agriculture and can be economically beneficial when fertilizer inputs are reduced without a yield reduction. Synchronizing N mineralization from organic materials with the needs of the subsequent crop is a challenge for organic growers.
Predicting plant available...
Objectives:
Breed improved Bush Blue Lake green bean varieties with:
a. White and gray mold resistance
b. Improved plant architecture
c. High economic yield
d. Improved pod quality (including straightness, color, smoothness, texture, flavor and quality retention, and delayed seed size development)
e. Tolerance to abiotic stresses
Improve seed quality...
Rubus seed characteristics; seed coat morphology, anatomy, germination requirements and dormancy were studied in order to define protocols for breaking seed dormancy. Morphological analysis of the seed coat (testa) using scanning electron microscopy (SEM) included 56 seed accessions of 10 subgenera preserved in the collections of the US Department of...
North American cultivation of Ribes L. may expand as small fruit growers seek species to diversify horticultural crops. The Ribes industry was suppressed for decades out of fear that cultivated black currants and gooseberries would intensify the fungal disease white pine blister rust (WPBR) on five-needle pine (Pinus L. section...
The content of this Technical Report is related to: Peachey, E., Doohan, D., & Koch, T. (2012). Selectivity of fomesafen based systems for preemergence weed control in cucurbit crops. Crop Protection, 40, 91-97. doi: 10.1016/j.cropro.2012.04.003.
Oxidative stress that occurs during cryopreservation may be reduced by the addition of antioxidants. Vitamin E (Vit E), Vitamin C (Vit C), glutathione (GSH), lipoic acid (LA), glycine betaine (GB) and polyvinylpyrrolidone (PVP) were applied at four steps of the PVS2 vitrification protocol (pretreatment, loading, rinsing, and regrowth). Shoot tips...
Objectives:
Develop broccoli varieties adapted to western Oregon with suitable quality, high yields, and disease resistance. Specific traits include:
Early to midseason maturity
Concentrated yield potential
Head rot and downy mildew resistance
Large openly branched heads that are well exserted and have clean stems for easy trimming and separation into...
The purpose of this research was to develop tools and germplasm for the production of tomatoes (Solanum lycopersicum L.) with high fruit phenolics without the use of genetic engineering. A candidate gene analysis was undertaken to identify genes regulating anthocyanin biosynthesis in tomato fruit (Aft, Abg, atv, and Purple Smudge)....
The accessions used to create the Snap Bean Diversity Panel were 150 snap bean (Phaseolus vulgaris) cultivars and breeding lines selected from North American and European germplasm to create a population that is representative of the snap bean market class from a historical and geographical viewpoint. This panel was developed...
Objectives for 2009:
1. Evaluate ascospore detection of S. sclerotiorum using multiple Rotorod spore traps.
2. Monitor environmental conditions within bean fields to begin model development of ascospore detection events.
Mating flight records are presented for males (drones) of the Asian dwarf honeybee species
Apis florea. These include observations on longevity, mortality and inclusive flight records for a cohort of
known-aged males. Averages for flight performance show the flights/lifetime to be 15.3 (± 11.8 SD); the
number of flight days,...