Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Several new herbicides were compared with those presently being used in Oregon to control weeds in snap beans, red beets and new plantings of strawberries. The results of these tests are summarized in tabular form.
The research reported here was a preliminary study to assess the nature and extent of herbicides leaving the target area in runoff water when these materials are used in container nurseries, and with less emphasis from nurseries growing field stock.
Specific objectives of this study were to:
1) Survey the...
In vivo spectral analysis of radish leaves sought effects on radish light harvesting apparatus (LH) of the herbicides: clomazone (FMC57020; [2-(2-chlorophenyl) methyl-4,4 dimethyl-3-isoxalidinone), diuron (DCMU; [3-(3,4-dichlorophenyl)-l,ldimethylurea)] and amitrol (H-1,2,4-triazole-3-amine). All herbicides used cause visual symptoms of chlorosis or damage chloroplast membranes and thus disrupt LH structure. The spectra were obtained...
A field trial was established at the Oregon State University Vegetable Research Farm, Corvallis, Oregon, to evaluate control of barnyardgrass and tolerance of several vegetable crops to diclofop-methyl (Hoelon) and a related experimental herbicide, HOE 23408 PLUS.
Field trials of weed control research on several vegetable crops are reported in this summary. Unless otherwise indicated these trials were conducted at the Vegetable Crops Research Farm at Corvallis. Soil type at this location is a silty clay loam and all plots were sprinkler irrigated as needed to provide...
The following summaries of results from experimental work with herbicides in horticultural crops cover work completed in 1967. Crops included are bush snap beans, red beets, direct seeded broccoli, cucumber, summer squash, strawberries and nursery rhododendrons. In general, weather conditions were warmer and drier than usual during the 1967 growing...
In herbicide plots on tree fruits in the Willamette Valley and at Hood River there has been a consistent correlation between weed control effectiveness and tree growth in young orchards. This appears to be particularly true of weed control during the spring and summer obtained from spring applications as compared...
Much of the research effort with Dacthal in 1961 was based on obtaining samples for residue analysis. Crops in these tests included broccoli, cabbage, cauliflower, onions and soybeans. Observations were made on crop response and weed control.
Several herbicides were evaluated for selective weed control in sweet corn in 1961. Various methods of application were compared and a comparison of planting depths was made to determine possible interactive effects with Eptam applications
A planting of three varieties of strawberries was made in the spring of 1959 with herbicide treatments designed to provide weed control through the normal life of the planting.
Several triazine herbicides were evaluated during the fall of 1967 and the spring and summer of 1958 on a variety of crop and week species to determine their potential selective and soil sterilant value.
The connection between the fruit-set disorder Inflorescence Necrosis (IN) and high ammonium (NI14+) in affected tissues has led to an investigation of NH4+ assimilation enzymes (principally glutamine synthetase (GS) and glutamate synthase) in grape tissues. Previous work in this department has suggested that toxic levels of NH4+ build up in...
Inflorescence Necrosis (IN) has been an unpredictable problem for grape growers in Oregon. The
industry has seen significant losses due to this fruit set disorder in several out of the eight years since its
first description in 1988, particularly in Pinot noir. Little is known of how to prevent the...
We have studied commercial fermentation practices for three vintages in order to learn how they affect
extraction and stability of anthocyanin pigments and other phenolic compounds in Pinot noir. Wines
were monitored during fermentation, processing, and aging for anthocyanin and phenolic content, color
intensity, and for phenolic profiles using high...
Objectives:
I. To evaluate the effects of five cover crop mixes on grapevine: a) water stress b) nutrient status c) fruit production and quality d) shoot growth e) mycorrhizal colonization.
II. To evaluate cover crop mixes for their: a) establishment rate b) biomass production c) nutrient content.
Over the last several years 'stuck' and 'sluggish' fermenations have become a ma or concern of winemakers in Oregon as well as in Washington and California. During the 1996 vintage we began a preliminary survey of Oregon musts and juices at harvest and showed that many were low or marginal...
Different fermentation practices are generally believed to affect wine composition and wine quality of Pinot noir. Oregon winemakers, for example, commonly attribute differences in color and phenolic extraction to differences in processing. There is, however, little information from replicated trials with controls demonstrating the cause and affect of these perceived...
An approximation of the total yeast fermentable nitrogen content in juice or must is taken as the sum of the nitrogen available from ammonia and the alpha-amino acids present (Bisson 1991 ; Dukes and Butzke 1998 ; Jiranek, Langridge, and Henshcke 1995). Recommended levels of fermentable nitrogen needed by yeast...
Objectives of proposed research:
1. Investigate the relationship between abscisic acid (ABA) and auxins and the regulation of carbon partitioning.
2. Investigate the origin of ABA present in the fruit during ripening and attempt to modify the partitioning pattern through manipulation of endogenous ABA levels using mefluidide (ABA biosynthesis promoter)...
The objectives of the trial are to evaluate Merlot clones and the varieties Sangiovese, Tempranillo, Syrah, and Viognier for production characteristics, maturity and fruit composition at harvest, and wine composition and wine quality in order to evaluate their potential for commercial wine grape production in warmer wine growing regions in...
Variability in fruit set and yield is a serious problem in Oregon viticulture, particularly with Pinot noir. Climatic variation during the flowering period contributes significantly to this problem by affecting fruit set and cluster weight. Cool wet weather during bloom results in poor set, small clusters, and low yields. Seasons...
Minimal pruning continues to look like a production system worthy of consideration in small scale commercial trials. In 1993, in a trial on Chardonnay at Woodhall vineyard, minimal pruning was compared to standard cane pruned vines on a vertical trellis. This was the second year of the trial.
Trellis design and canopy management have been major research topics in viticulture during the last ten years. The article by Dave Adelsheim in the first edition of the "Oregon Winegrowers Guide" and the presentations of Shaulis, Smart, Carboneau, Intrerari and Koblet at the 1984 Cool Climate Symposium in Eugene were...
Increasing ecological awareness led to the conceptualization and implementation of sustainable production systems such as Integrated Production. Integrated Production (IP) aims at achieving optimum yields of high quality fruit utilizing environmentally safe procedures. Priority is given to the utilization and enhancement of natural regulating processes and to the reduction of...
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.
In the production of vegetable crops, good fertilizer usage is only one of the important management practices, including proper seeding, pest control, adequate irrigation, and timely harvest. Because of the influence of soil type, climatic conditions, and other cultural practices, crop response from fertilizer may not always be predicted accurately....
Fertilizer recommendations in this guide are based on the use of well-adapted varieties and disease free plants, selection of suitable soils, disease and insect control, weed control, and proper irrigation. Application of these management practices is essential to realize optimum fertilizer response.
Strawberries respond to generous amounts of soil organic...
1. Rotbusters Field Survey.
Kokanee and Basin were the only varieties sampled in 2005. There was a significant relationship between radicle rot severity and gross yield for Kokanee but not for Basin.
In previous years, we have shown that for Jubilee, approximately 3 tons of gross yield are...
Planting date/cultivar evaluation: Thirty-six sweet corn cultivars were evaluated for resistance to natural infection by common smut (Table 1). Plots were seeded to 30,800 plants/acre on May 16 and Jun 23 on the Hermiston Agricultural Research and Extension Center on Adkins fine sandy loam (pH 6.7, 0.9% organic matter). The...
The objectives of this project were to evaluate the efficacy of common row crop herbicides for control of puncturevine, and determine the effect of post harvest weed management strategies on hairy nightshade seed development.
Cancellation of the registration of an effective bean mold fungicide, Ronilan, is slated to occur at the end of growing season in 2005. Finding equivalent alternatives by 2006 for use in snap bean is critical. The goal of the project is to continue evaluations of alternative fungicides for their effectiveness...
Summary
Irrigation effects on root rot and yield
Reducing irrigation during the first 6 weeks after planting reduced root rot of sweet corn at midseason and at harvest, consistent with findings of the past two years.
Reducing the early season irrigation level increased yield of Jubilee by 20%...
Weed management is a continual challenge to Oregon table beet growers. Research over the last several years has documented that s-metolachlor (Dual Magnum) will substantially improve weed control and crop yields when applied alone or in concert with other registered herbicides such as Roneet and Pyramin, with the potential to...
Part 1: Bean mold project: What is an effective alternative to Ronilan for control of gray and white mold in snap beans when mold pressure is severe? When can we use a less expensive single fungicide application without putting the bean crop at significant risk?
Part 2: 12 Spot Beetle...
Objectives:
1. Breed Bush Blue Lake green bean varieties with high economic yield and improved plant architecture.
2. Improve pod characteristics including straightness, color, smoothness, texture, flavor and quality retention, and combine with delayed seed size development.
3. Incorporate white mold resistance and improve root rot tolerance.
4. Develop a...
Objectives:
I. Develop broccoli varieties adapted to western Oregon with suitable quality, high yields, and disease resistance. Specific traits include:
a. Early to midseason maturity
b. Concentrated yield potential
c. Downy mildew resistance
d. Exerted heads with large openly branched heads with heavy, clean stem for easy trimming and separation...
Project Objectives
1. Develop and evaluate a Pilot IPM scouting program for the WSCB in snap beans
2. Determine the seasonal aggregation and movement patterns within diversified vegetable cropping systems
3. Evaluate the potential for “trap and kill” strategies as cultural control components of an IPM program for the WSCB...
Thirty-one sweet corn cultivars were evaluated for resistance to natural infection by common smut. To determine if there is High Plains virus resistance in commercial processing sweet corn cultivars, trials were conducted at the Hermiston Agricultural Research & Extension Center, and in two commercial sweet corn production fields near Moses...
Objective 1: Evaluation of commercial sweet corn varieties and inbred germplasm in small plots for susceptibility to seed rot/damping-off as well as root, stalk, and crown rot. Objective 2: Evaluation of microbial and chemical treatments for suppression of sweet corn seed rot/damping-off, root rot, and crown rot. Objective 3: Cooperate...
Cancellation of the registration of an effective bean mold fungicide, Ronilan, occurred at the end of the 2005 growing season. Finding equivalent alternatives for use in snap bean is critical. The goal of the project is to continue evaluations of alternative fungicides for their effectiveness in controlling white mold (Sclerotinia...
Project Objectives
1. Implement and evaluate a Pilot IPM scouting program for the WSCB in snap beans
2. Evaluate WSCB seasonal aggregation and movement patterns within diversifi ed vegetable cropping
systems
3. Evaluate the potential for “trap and kill” strategies as cultural control components of an IPM program
for the...
The objective of the study was to compare crop tolerance of carrots and parsnips to two soil and early postemergent herbicides. Dual Magnum (s-metolachlor) was recently registered for use on root crops, but provides poor control of hairy nightshade, and looses effectiveness if rainfall is excessive after application.
Objective: to evaluate the impacts of N availability, microbial activity, and root health on corn productivity and yield in high biomass cover crop systems
Three trials at two locations were conducted to evaluate sweet corn hybrids for performance under root rot conditions. While both sugar/se and supersweet sweet corn hybrids were evaluated, the emphasis was again on identifying supersweet hybrids with improved tolerance to root rot.
Objectives:
1. Breed Bush Blue Lake green bean varieties with high economic yield and improved plant architecture.
2. Improve pod characteristics including straightness, color, smoothness, tex-ture, flavor and quality retention, and combine with delayed seed size de-velopment.
3. Incorporate white mold resistance and improve root rot tolerance.
4. Map genes...
Research efforts were focused on testing various inbred combinations for hybrid produc-tion, and evaluating commercial cultivars for adaptation to Oregon growing conditions and for head rot resistance.
SUMMARY
• Impact and Laudis herbicides were evaluated for wild proso millet and broadleaf weed
control in sweet corn.
• The most effective treatments were Impact and Laudis applied with Outlook and atrazine at
V2-3.
• Increasing the methylated seed oil (MSO) rate from 0.25% to 1 % was more...
1) Develop and moderate a workshop to discuss hypothetical crop rotation strategies that would
allow conversion of land to organic processed vegetable production without exacerbating weed
or pest positions.
• Invite industry leaders to help develop crop rotations
• Invite potential forage consumers/buyers to help focus on projected forage needs...
VegNet is a regional pest monitoring and reporting network serving the Oregon processed vegetable industry, managed by the OSU Extension Service, and funded by the Oregon Processed Vegetable Commission. In the early spring of 2007, a variety of insect traps were placed on cooperating farms in vegetable production areas around...
Objective 1: Evaluation of commercial sweet corn varieties and inbred germplasm in small plots for susceptibility to seed rot/damping-off as well as root, stalk, and crown rot. Objective 2: Evaluation of microbial (biofungicides) and chemical treatments for suppression of sweet corn seed rot/damping-off, root rot, and crown rot.Objective 3: Cooperate...
Cancellation of the registration of an effective bean mold fungicide, Ronilan, occurred at the end of the 2005 growing season. Finding equivalent alternatives for use in snap bean is critical. The goal of the project is to continue evaluations of alternative fungicides for their effectiveness in controlling White Mold (Sclerotinia...
Weed management in table beets has improved with the recent registration of Dual Magnum. Hairy nightshade control continues to be a challenge, however. Nortron (ethofumesate) herbicide is now labeled for use and will help with nightshade control, but there is very little experience in the PNW on the best use...
Objectives:
1. Breed Bush Blue Lake green bean varieties with high economic yield and
improved plant architecture.
2. Improve pod characteristics including straightness, color, smoothness, texture,
flavor and quality retention, and combine with delayed seed size development.
3. Incorporate white mold resistance and improve root rot tolerance.
4. Map genes...
Research efforts were focused on testing various inbred combinations for hybrid production,
and evaluating commercial cultivars for adaptation to Oregon growing conditions
and for head rot resistance
VegNet is a regional pest monitoring and reporting network serving the Oregon processed vegetable industry, managed by the OSU Extension Service, and funded by the Oregon Processed Vegetable Commission. In the early spring of 2008, a variety of insect traps were placed on cooperating farms in vegetable production areas around...
Objective 1: Evaluate commercial sweet corn varieties and inbred germplasm in small plots for susceptibility to root rot, stalk node rot, and crown rot. Objective 2: Examine the relationship between Western Spotted Cucumber Beetle reproduction and seed microbial communities.
Objective for 2008 and Accomplishments: The purpose of this proposed research is to determine whether ascospores of S. sclerotiorum can be detected in experimental bean plantings by polymerase chain reaction (PCR).
Objectives: to determine the impact of
1.fall Contans applications on Coniothyrium minitans (Cm) infection and survival of sclerotia left on the soil surface through the winter and summer
2.the impact of summer irrigation and burial on sclerotial survival and infection with Cm and other fungi
SUMMARY
Both Impact and Laudis are effective grass killers. The weed control spectrum of these herbicides was enhanced by the addition of atrazine. Both are weak on purslane.
The data from the Stayton I experiment with Coho sweet corn suggest that corn yield may have been reduced by as much...
Projects evaluated the potential of controlling hairy nightshade with tankmixes of ethofumesate and s-metolachlor and determined table beet tolerance to s-metolachlor in a commercial production system. Hairy nightshade control with Dual Magnum improved nearly linearly as the rate of Dual Magnum increased. Hairy nightshade control improved significantly when Dual Magnum...
Objectives:
1. Develop broccoli varieties adapted to western Oregon with suitable quality, high yields, and disease resistance. Specific traits include:
a. Early to midseason maturity
b. Concentrated yield potential
c. Head rot and downy mildew resistance
d. Large openly branched heads that are well exserted and have clean stems for...
Objective: 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)
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.
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...
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.
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,...
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.
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...
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.
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...
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...
We have conducted a full-time program of vegetable crop research at the North Willamette Research and Extension Center (formerly the North Willamette Experiment Station) since 1976. The Center, a branch of both Oregon State University's Agricultural Experiment Station and its Extension Service, is just north of Aurora, a historic farming...
A series of studies during six years examined vegetative growth and fruit yield of the 'Olympus' strawberry when grown with black polyethylene mulch and drip irrigation. In some studies, plants were grown with or without mulch and irrigated at low, medium, or high levels for one or two months in...