The 22nd Annual Northern Canola Growers Association Canola
Expo will be held in Langdon, North Dakota on Tuesday, December 3rd.
Featured speaker Elaine Kub, author of Mastering the Markets, will
focus on oilseed markets. As well as sharing her ag market insights on
television and various farm radio programs, Kub also focuses on quantitative
analysis in a regular column for DTN and The Progressive Farmer.
NDSU Extension and a Canadian Clubroot expert will also give
the latest on canola clubroot research. The Expo will also feature a
trade show and the NCGA annual membership meeting. NDSU Pesticide
Recertification will also be offered in the afternoon. Please join us on
December 3rd! More information can be found at
The diamondback moth migrates into ND and usually arrives in late May
or early June in North Dakota. The complete life cycle takes about 32 days from
egg to adult. There are several generations during a single growing season, so
all different life stages (eggs, larvae, pupae, adults) can be found in the
field at the same time.
The adult is small, about
½-inch long, drab brown in color and, at rest, the forewings of the male moth
form three diamonds – hence the name diamondback moth. Females lay up to 160
eggs during the night. Eggs hatch in five to six days into pale yellowish-green
caterpillars with a forked posterior end. The newly emerged larvae burrow into
the leaf and mine the leaf for several days to a week. Then, the larvae exit
the leaf and feed externally for another 7 to 14 days. When disturbed, the
larvae thrash backwards violently and often drop from the plant on a strand of
silk. The larvae pupate for 5 to 15 days in a white net-like cocoon attached to
the leaves, stems or pods.
Larvae feed on the leaves,
buds, flowers, seed pods, the green outer layer of the stems, and occasionally,
the developing seeds. As leaves wilt and drop in late July to early August,
larvae will feed on the stem, pods, and developing seeds. Damaged pods will not
fill completely and may shatter. Severely damaged pods appear whitish in
contrast to the normal yellowing and browning of ripening undamaged pods.
Scout fields for diamondback moth larvae by beating plants to
dislodge the larvae into white buckets. After beating plants, count larvae in
the bucket or dangling from plants on a silk thread. Again, check several
locations per field. For the early
flowering stage, insecticide applications may be justified at larval densities
of 10 to 15 larvae per square foot. The action threshold for canola at the pod
stage is an average of 20 larvae per square foot.
The best pest
management strategies to avoid yield losses from diamondback moth include early
field scouting for larvae, and judicious use of insecticides only when fields
are above thresholds. For more information, consult the NDSU Extension
publication on Diamondback moth in
Canola: Biology and Integrated Pest Management E1346 (revised).
The adult moth is about 1½ inches long and mainly grayish-black with a
silvery-whitish kidney-shaped spot and with a silvery-whitish fringe on each
forewing. Moths emerge from the overwintering pupae in mid-late June and
emergence continues through early August. These night fliers are particularly
attracted to blooming canola fields for their nectar and egg laying sites. Eggs
are laid on the lower side of leaves in clusters of 50-500 eggs in a honeycomb
pattern and hatch in about one week. The emerging larvae (1/10th of an inch) are usually green in color. Mature larvae are
about 1½ inch long and vary in color from green to brown to velvety black.
Larvae often hide underneath leaf litter and clumps of soil during the day,
which makes them difficult to see. Larvae develop for six weeks and then drop
to the ground in mid to late August to pupate. There is only one generation per
As the canola
plant drops its leaves, the mature larvae (>½ inch) begin to feed directly
on the pods which causes economic yield losses and premature shattering.
Feeding injury by the mature larvae also accounts for 80 to 90 percent of the
plant material consumed during a larvae’s life. Mature larvae will even
continue to feed on pods in the swath. Fortunately, populations are kept low
during most years due to natural environmental factors like harsh winters and
the presence of biological control agents (diseases and parasites).
would be 18 to 22 larvae per square yard, if leaf feeding is the extent of the
damage observed. The key
to controlling bertha armyworm is:
Early detection of young larvae about ½ inch long in canola
fields by regular scouting.
Determining if fields are above economic thresholds for
Fields above the economic threshold level should be sprayed
once the hatch is complete and just before larvae move to the pods. Apply a
well-timed insecticide in late evening when larvae are actively feeding.
volumes of water for good coverage of the dense canola canopy.
information, consult the NDSU Extension publication on Bertha armyworm in Canola: Biology and
Integrated Pest Management E1347 (revised).
the NDSU Extension E1143 2019 ND
Field Crop Insect Management Guide for insecticides registered in
canola. Please remember that blooming
canola is attractive to bees, so insecticides should be applied in the late
evening (preferred by honey bee keepers) or early morning to minimize negative
effects of an insecticide on bees.
Ash gray blister beetles, Epicauta fabricii, have been reported in canola, soybean and alfalfa fields in central, northwest and north central areas of ND. Adult blister beetles can be an occasional pest causing defoliation to the leaves and clipping flowers or pods. In canola, they are attracted to blooming canola fields for its nectar and pollen, but they also devour leaves, flowers and pods. Blister beetles are a major problem in alfalfa / hay fields or in bales, since they produce a toxic chemical (cantharidin), which is toxic to livestock, especially horses. Larvae of Epicauta species actively prey on grasshopper egg pods. Blister beetles are mobile and gregarious, and often congregate in certain spots in a field (edges). In some instances, blister beetles only feed for a short period and then migrate to other fields. Alfalfa and forage are preferred hosts of blister beetles and they often move into canola or other field crops after the alfalfa is cut. If treatment is necessary to avoid yield loss, producers can ‘spot treat’ with a foliar insecticide. Please avoid spraying flowering crops for bee/pollinator safety.
Hemp production, weed control and pulse crop production
are among topics that will be covered during the July 17 field day at North
Dakota State University’s North Central Research Extension Center (NCREC) near
The Northern Pulse Growers Association, Northern Canola
Growers Association, North Dakota Wheat Commission and Farm Credit Services are
sponsoring the event.
The program begins with a pest clinic at 8:30 a.m. Weed,
insect and plant disease samples will be available for viewing.
The tour begins at 9 a.m. with a welcome and coffee and
rolls, and will conclude with a noon meal. The NCREC also is hosting a wheat
preharvest marketing seminar, sponsored by the North Dakota Wheat Commission.
The seminar begins at 1 p.m.
Field day topics are:
* Hemp production strategies
* Weed control research
* Clubroot management and identification in canola
* Omega-3 canola
* Pulse production, NDSU pulse breeding program and
potential pea release
* Managing saline soils with beet lime
Topics for the wheat preharvest marketing seminar are:
* Marketing strategies for harvest and beyond, and the
big issues impacting markets
* Demand outlook for hard red spring and durum wheat
* Challenges and opportunities for North Dakota wheat
producers in 2019
Attending the field day and wheat preharvest marketing
seminar is free of charge. The NCREC is a mile south of Minot on U.S. Highway
The North Dakota State University Langdon Research
Extension Center (LREC) once again is partnering with the Northern Canola
Growers Association (NCGA) to host the 2019 annual field day and plot tours.
The field day will be held Thursday, July 18, at the
LREC, which is one mile east of Langdon, N.D., on North Dakota Highway 5. The
event will run from 8 a.m.
Topics being addressed include:
* An update on the canola clubroot infestation affecting
northeastern North Dakota and an update on the overall 2019 canola growing
* Information on crops being affected by insect activity
during the 2019 growing season
* Soybean production issues, including properly
identifying Palmar amaranth and other weed concerns
* The current situation and possible actions to minimize
disease pressure in small grains
* Production information to support the increased
interest in pulse crops in northeastern North Dakota
* Report on the current farm financial situation and
* Benefits of full-season cover crops
The NCGA is sponsoring the morning coffee break and noon
Register now for the Northern Canola Growers Association Golf Tournament to be held July 18th, 2019 at the Langdon Country Club. Registration for the 4-man best ball tournament is $50/player or $200/team. You may register individually and be placed on a team or register a complete team. Registration fee includes 9 holes of golf, a golf cart, refreshments, and supper at the club house. Prizes will be awarded. Registration for the Langdon tournament is limited to the first 132 players, so register early! This tournament is made possible by the support of our industry sponsors.
If you would like to register for this year’s tournament please fill out the registration form and return along with payment to:
Northern Canola Growers Association 125 Slate Drive Suite #4 Bismarck, ND 58503
At the start of spring, the cool, wet weather delayed emergence of flea beetles and the early to mid-May-seeded canola. Now, the hot weather has pushed flea beetles to emerge in large numbers just as the canola is popping. After the seed sits in the ground for 21+ days with little plant growth, the effectiveness and residue of the neonicotinoid seed treatment is significantly reduced. This week some growers are spraying a foliar ‘rescue’ insecticide treatment on top of the insecticide seed treatment to manage the ‘feeding frenzy’ of flea beetles. In some case, three foliar applications were applied to manage the different emergence waves of flea beetles. Hot spots are in the major canola producing areas of ND including North Central (Bottineau Co.), Northeast (Cavalier Co.) and Southwest.
Fields should be scouted daily to identify economic injury or poor performance of insecticide seed treatments. Look for pitting and defoliation on cotyledons and true leaves when scouting. Flea beetle often concentrate on edges of fields in cool wet weather. Walk a W pattern and scout five sites per field. Estimate defoliation on 10 plants per site. Calculate the average defoliation level among the plants inspected.
For foliar insecticide applications, the action threshold is when an average of 20-25% defoliation is found on the cotyledons and/or first true leaves, and beetles are actively feeding in the field.
Foliar treatments must be made quickly. The weakness of foliar control strategies is the inability to cover large number of acres quickly when feeding pressure is high, and residual protection by the insecticides is short (only 5-10 days depending on weather and rate of insecticide), allowing for reinfestation to occur.
Pyrethroid insecticides (a.i. bifenthrin, deltamethrin, gamma-cyhalothrin, zeta-cypermethrin) provide good control of flea beetles and a 7- 10 day residual at the high-labeled rate. If it is hot (above 85⁰F), pyrethroid insecticides break down faster and are not as efficacious at controlling insect pests. So, insecticide application may need to be applied early in the morning or in the evening when daytime temperatures are hot. Insecticides registered for flea beetle management in canola are listed in the 2019 North Dakota Field Crop Insect Management Guide E1143.
For more information, please consult the NDSU Extension fact sheet Integrated Pest Management of Flea Beetles in Canola E1234 (revised).
Janet J. Knodel Lesley Lubenow
Extension Entomologist Area Extension Specialist/Agronomy
NDSU Langdon Research Extension Center
NCGA just received confirmation that canola will be included in the recently
announced Ag trade Package from USDA. Other crops left out in last year’s
payments will also be included. Payments will
be based on a single county rate multiplied by a farm’s total plantings to those
crops in aggregate in 2019. Per acre payments are not dependent on which crops
are planted in 2019, and therefore will not distort planting decisions.
Total payment-eligible plantings cannot exceed total 2018 plantings.
Payments will be made in up to three tranches, with the second
and third tranches evaluated as market conditions and trade opportunities
dictate. The first tranche will begin in late July/early August as soon as
practical after Farm Service Agency crop reporting is completed by July 15th.
If conditions warrant, the second and third tranches will be made in November
and early January.
Further details on the payments will be provided this afternoon.
The Northern Canola Growers Association wishes to express its concern that canola be included as an eligible commodity under the recently announced aid package for farmers. Canola growers have suffered tremendous market losses as a direct result of the trade dispute with China and canola oil has now been slapped with a retaliatory tariff into China. These market losses are negatively impacting canola growers and influencing planting decisions.
The attached chart shows how canola prices have
dropped right along with soybeans. In
fact, canola prices have dropped even harder than soybeans recently due to the
ban on canola imports from Canada into China due to the arrest of the Huawei
executive. This will result in ending
stocks of canola nearly doubling this crop season, further dampening prices.
In North Dakota, which produced over 80 percent of
the U.S. canola crop, the cash price at the ADM Velva crushing plant for canola
has dropped from $17.78 on June 15, 2018 to $15.00 as of today, a decline of 16
Using the 2018 national average
yield of 1,861 pounds/acre, U.S. canola producers are facing an average loss of
$51.74 per acre, equal to almost $103
million in lost revenue when applied to the 1.99 million acres of canola
planted in 2018.
We therefore request
that canola be included in the announced aid package as an eligible commodity
so that canola growers can recoup a portion of the lost revenue as a result of
the ongoing trade dispute with China.