Introducing winter canola to the winter wheat–fallow region of the Pacific Northwest

Young, Frank L.; Whaley, Dale K.; Pan, William L.; Roe, R. Dennis; Alldredge, J. Richard

doi:10.2134/cs2014-47-5-6

Cited by 5 publications

(7 citation statements)

References 10 publications

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“…Winter canola yield was similar regardless of herbicide treatment and was increased approximately kg ha À1 compared with the nontreated control (Table 2). Canola yields in this study were similar to yield (1,870 kg ha À1 ) in a concurrent winter canola seeding date and rate study conducted in the same field with the same variety planted the same day (Young et al 2014). Henton Location.…”

Section: Resultssupporting

confidence: 70%

“…With the introduction of winter canola as an alternative crop into the winter wheat-summer fallow region (Young et al 2014), an opportunity exists for growers to better manage feral rye in their production systems. Herbicide-resistant varieties of winter canola would expand options for producers to include herbicides such as glyphosate to control feral rye effectively.…”

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confidence: 99%

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Feral Rye (Secale cereale) Control in Winter Canola in the Pacific Northwest

Young¹,

Whaley

Lawrence

et al. 2016

Weed technol.

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In the Pacific Northwest (PNW), feral rye is a predominant winter annual grass weed in the low-rainfall region where a winter wheat–summer fallow rotation has been practiced for more than 130 yr. Recently, producers began including winter canola in their rotation, which provides additional herbicide options to control feral rye. A 3-yr study was conducted in Washington to determine the efficacy of clethodim, quizalofop, and glyphosate on feral rye control and winter canola yield. During the first year of the study herbicides were applied in the spring, and they increased canola yield and decreased feral rye biomass, density, and seed production similarly when compared with the nontreated control. During the last 2 yr of the study, split applications of quizalofop and glyphosate were the most effective treatments for controlling rye (> 95%) and increasing canola yield. In general, clethodim was less effective than both quizalofop and glyphosate in controlling feral rye. Results from this study indicate that quizalofop in conventional or glyphosate-resistant winter canola and glyphosate in glyphosate-resistant winter canola can effectively control feral rye.

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Section: Resultssupporting

confidence: 70%

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confidence: 99%

Feral Rye (Secale cereale) Control in Winter Canola in the Pacific Northwest

Young¹,

Whaley

Lawrence

et al. 2016

Weed technol.

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“…Clopyralid is an effective option for control of rush skeletonweed in winter wheat when applied to plants in the rosette stage in either fall or spring. Clopyralid is also registered for use in canola, one of the best alternative crop options for the wheat–fallow zone of Washington (Young et al 2014). Aminopyralid controls rush skeletonweed as well, but is not currently labeled for use in wheat.…”

Section: Resultsmentioning

confidence: 99%

Rush Skeletonweed (Chondrilla juncea) Control in Pacific Northwest Winter Wheat

et al. 2018

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Rush skeletonweed is emerging as a regionally important weed of winter wheat production in eastern Washington. Field studies were conducted during the 2016 and 2017 crop years to evaluate several auxin herbicides applied at two seasonal timings (fall or spring) for control of rush skeletonweed in winter wheat. Clopyralid (210 g ae ha-1) provided>90% visual control of rush skeletonweed in both years of the study and aminopyralid (10 g ae ha-1) provided>80% visual control. Aminocyclopyrachlor, dicamba, and 2,4-D provided<55% control of rush skeletonweed. Season of application did not meaningfully affect efficacy of any herbicide tested. Wheat yields were reduced by 39 to 69% compared to the non-treated check when aminocyclopyrachlor was applied in the spring. Clopyralid is an effective option for control of rush skeletonweed in Pacific Northwest winter wheat.

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“…Although it is a minor crop in eastern Washington, winter triticale had a higher N use efficiency and WUE; economic returns equal to or greater than winter wheat; and produced an equal or greater amount of non‐grain biomass. Although winter canola planted at Ralston was killed by abnormally dry and cold winters that prevented harvest of the crop in 2014 and 2015, data indicate that tall stripper‐header stubble provided microclimate‐ameliorating effects that improved canola establishment compared with traditional fallow, reduced the risk of wind erosion, and did not rely on cool post‐plant temperatures for canola establishment (Young et al, 2014). These results may encourage growers to diversify their current century‐old, highly‐erosive winter wheat–fallow systems to include the purchase of a stripper header and production of winter triticale and winter canola.…”

Section: Resultsmentioning

confidence: 99%

Producing High‐Residue, No‐Till Fallow in the Low‐Rainfall Zone of the Pacific Northwest

Port

Young²,

Pan

2017

Crop Forage & Turfgrass Mgmt

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Core Ideas Use of a stripper header to leave tall stubble for high‐residue no‐till. Winter triticale outperforms winter wheat in low rainfall dryland production. Tall crop residue reduces wind speeds at the soil surface. The low‐rainfall wheat production zone of eastern Washington is subject to wind erosion because of fine‐textured soils, low soil organic matter content, and tillage‐based winter wheat–summer fallow practices. Annual no‐till spring cropping systems to replace the low‐residue, erosive summer‐fallow period have not been economical. We conducted a 4‐year study at Ralston, WA to evaluate winter triticale (× Triticosecale) and non‐semi‐dwarf winter wheat (Triticum aestivum) biomass production, yield, nutrient use efficiency, and seed‐zone soil moisture during no‐till fallow and establishment of fall‐seeded canola. Treatments included winter triticale and winter wheat, both harvested with either a stripper header or conventional cutter‐bar header. Winter triticale produced more grain per pound of N fertilizer and per inch of soil water available than winter wheat, and overall yield was 30–80% greater than that of winter wheat. Full‐height cereals produced 20–90% more biomass than semi‐dwarf winter wheat. Stripper‐header triticale stubble maintained with no‐till chemical fallow (NTCF) reduced average wind speed at the soil surface to less than one‐half of the average wind speed recorded over reduced‐tillage winter wheat fallow. Soil moisture in the 0‐ to 3‐inch seed zone was greater and more uniform in stripper‐header no‐till fallow than in reduced‐tillage fallow. Maintenance of soil moisture by stripper‐header standing stubble was conducive to timely planting and establishment of fall‐seeded canola and led to greater crop establishment in no‐till fallow. Growing a high‐biomass cereal crop such as winter triticale or standard‐height winter wheat and harvesting with a stripper header produces a high‐residue, no‐till fallow that is a viable alternative to the traditional winter wheat–fallow cropping system.

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Introducing winter canola to the winter wheat–fallow region of the Pacific Northwest

Cited by 5 publications

References 10 publications

Feral Rye (Secale cereale) Control in Winter Canola in the Pacific Northwest

Feral Rye (Secale cereale) Control in Winter Canola in the Pacific Northwest

Rush Skeletonweed (Chondrilla juncea) Control in Pacific Northwest Winter Wheat

Producing High‐Residue, No‐Till Fallow in the Low‐Rainfall Zone of the Pacific Northwest

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