Wednesday, August 14, 2013

Disease Possibilities in Crops Increase as Rain Continues

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. -- Recent rains have created conditions conducive to disease development on corn and soybeans according to Jill Scheidt, an agronomy specialist with University of Missouri Extension in Barton County.

“Rain carries funguses in the air which makes it easier for the funguses to spread.  Diseases like rust, gray leaf spot, northern corn leaf blight, brown spot, crazy top and stalk and ear rots develop best in wet and humid conditions,” said Scheidt.

Fungicides that effectively and economically suppress these diseases are most effective if applied while corn is in the vegetative stage, or before silking.  If corn already has silks, plants will not respond as well to a treatment.

“It is not economical to apply a fungicide past the tasseling stage,” said Scheidt.

Sudden Death Syndrome or SDS may become a concern with wet conditions after planting and later in the season during bloom.  According to Scheidt, wet conditions early in the season are conducive to the infection of SDS and wet conditions during bloom or late in the season are conducive to symptoms being expressed.

“It is difficult to assess yield loss due to SDS. Yield loss is more likely if leaf tissue dies and pods or blooms are aborted rather than seeing severe yellowing between the veins,” said Scheidt.

Other foliage diseases that affect soybeans during wet conditions are septoria brown spot, downy mildew and bacterial blight.  Young plants that are in flooded or saturated soils have an increased chance of root rot diseases.

Flooding causes problems in corn and soybean plants as well.  Saturated soils along with moving water can cause lodging because the roots do not have a solid structure to hold on to in order to stay upright. 

“The longer an area is flooded, the more damage it will cause,” said Scheidt.

If the weather remains humid after the rains have ceased, it is more likely ear rot on corn will occur.  If the humidity is less dense and the air is drier, there is a better chance of not developing diseases. 

“If a field is underwater and is going to be harvested, it should be harvested as soon as it is ready and the combine settings should be adjusted to allow less trash and sediment to stay in the combine.  Unfortunately, there is no fungicide producers can apply to seed after it is harvested and goes into the grain bin to eliminate funguses already present on the seed,” said Scheidt.

Some insect threats have slowed with the increased rain.  Grasshoppers, spider mites and thrips are less of a threat in wet conditions. 

Pod worm, also known as corn earworm, and bean leaf beetle feeding are not affected by wet conditions and still need to be scouted.  Threshold levels for foliage feeding on soybean are 30 percent defoliation before bloom and 20 percent defoliation during and after bloom. 

“Now is the time to be scouting regularly for pod feeders such as pod worms.  Pod worms are rapid pod feeders and can destroy much of a field in one night; threshold levels for pod worm in soybean are 1 per foot,” said Scheidt.

For more information, contact any of these MU Extension agronomy specialists in southwest Missouri: Tim Schnakenberg in Stone County, (417) 357-6812; Jill Scheidt in Barton County, (417) 682-3579; John Hobbs in McDonald County, (417) 223-4775 or Brie Menjoulet in Hickory County, (417) 745-6767.


Labels:

Friday, August 09, 2013

Southwest Missouri Field Crop Report for August 7, 2013

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on August 7 to prepare this week’s field scouting report.

SOGGY FIELDS

“With all the heavy rains, a lot of fields have standing water in them.  Smaller soybeans plants that are in the V3 stage, before bloom, are showing signs of root rot diseases,” said Scheidt.

Scheidt said the beginning of rhizoctonia and fusarium were seen in double crop beans.

Rhizoctonia is identified by red to reddish brown lesions on the root at the soil line.  Fusarium is identified by uneven stands and lesions on roots that lead to the decay of root material.  Both can be caused by wet soil conditions.

Sudden Death Syndrome, or SDS, could be a threat later in the season due to soil saturation later in the season.  SDS is associated with high soil moisture and cooler than normal temperatures at or near bloom and is more pronounced after bloom.

“SDS can be identified by yellowing between the veins, turning the whole leaf yellow and leaving the veins green.  There is no fungicide to treat SDS; more resistant varieties must be purchased in order to suppress SDS,” said Scheidt.

POD WORMS

According to Scheidt, pod worms may become a concern in soybean fields once pods begin forming.  Pod worms are also known as corn earworm.

“They feed on pods and consume seeds.  Pod worms can be identified by their four abdominal prolegs and several longitudinal stripes down the body.  Threshold for pod worm in soybean are one per foot of row,” said Scheidt.

Corn earworm is also being seen in corn, feeding on the kernels.  There is no threshold for corn earworm in corn in Missouri. “It is often not economical to spray for corn earworm, rather, you must select for varieties with tighter fitting husks or earlier maturing varieties,” said Scheidt.

Crazy top and other funguses on corn ears were seen due to the wet weather.  Fungicides are not economical, therefore one must select for more resistant varieties when buying seed.

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.

PHOTOS AVAILABLE: The direct link for a photo for use with this story is http://www.flickr.com/photos/muextension417/9460212287/ for the Corn Ear Worm.



Labels: , ,

Thursday, August 01, 2013

Southwest Missouri Field Crop Report for July 31, 2013

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on July 31 to prepare this week’s field scouting report.

“The majority of the corn scouted this week, looks to have pollinated good and kernels are beginning to develop.  In fields that did not receive rain during pollination, ears had spotty kernels that pollinated,” said Scheidt.

A very small amount of rust was seen on leaves this week but Scheidt says it is rarely something to worry about.  Corn rootworm beetles were seen on silks.

“There is no need to spray for insects feeding on silks if pollination is complete.  If pollination is less than 50 percent complete and silks are clipped to less than half an inch, treatment is justified,” said Scheidt.

POD WORMS

“Do not misidentify green clover worm with pod worms, also known as corn earworm.  The two worms are different in that one is beneficial and the other is not,” said Scheidt. 

Green clover worm carry a fungus that kills pod worms.  Green clover worm can also be found in soybean fields and may feed on foliage, but do not cause economic damage.

Green clover worm and pod worm are similar in color but can be differentiated by counting the number of abdominal pro-legs.  Green clover worms have three abdominal pro-legs and pod worms have four abdominal pro-legs. 

BLISTER BEETLES

“Blister beetle feeding was seen, but I could not find any actual beetles.  Blister beetles are narrow, cylinder shaped beetles with black and yellow stripes down the back,” said Scheidt.

Again, defoliation thresholds for soybeans are 30 percent defoliation before bloom and 20 percent defoliation during or after bloom.

Herbicide injury was seen on a few soybean fields.  It is important to consider the growth stage of soybeans when spraying herbicides that can cause injury to the leaves.

“Soybean plants need to be in optimum health just before and at flowering to produce an optimum yield.  If you are irrigating, before and at flowering are also critical times to water the field,” said Scheidt.

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.
###

The direct links for this photos are http://www.flickr.com/photos/muextension417/9413800574/ for the Pod Worm and http://www.flickr.com/photos/muextension417/9411034079/ for the Green Clover Worm.


Labels:

Friday, July 26, 2013

Southwest Missouri Field Crop Report for July 24, 2013

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on July 24 to prepare this week’s field scouting report.

“In fields that received rain, the crops look refreshed from the dry conditions.  Some lodging or leaning has occurred in the corn from high winds,” said Scheidt.

This week, no Japanese beetle feeding has been seen on the silks.  Threshold levels for Japanese beetle in corn are when 3 or more beetles are clipping green silks, to less than half-inch. 

“If corn is over 50 percent complete with pollination, it is not economical to treat Japanese beetles because the threat of kernels not being pollinated is minimal.  A high rate of Hero is recommended to treat Japanese beetles,” said Scheidt.

Chinch bugs have been seen in Vernon County.  They usually feed on edges of corn fields near wheat fields.  Chinch bugs suck sap from corn stalks causing them to wilt and the plant not to yield.  They prefer hot, dry weather.

Treatment is justified when 2-3 percent of plants show damage; Warrior II, Cobalt or Lorsban are recommended by themselves or with mixtures.  Treatment is usually only needed on field edges.

“Japanese beetle and grasshopper feeding were still seen in soybeans, but not at threshold level.  Grasshopper feeding should decrease with rainfall because they prefer hot, dry weather,” said Scheidt.

Defoliation threshold levels in soybeans are 30 percent defoliation before bloom and 20 percent defoliation during or after bloom. 

“Window pane feeding was seen on soybean leaves from second generation bean leaf beetles.  Second generation bean leaf beetles do not cause economic damage that require treatment, so window pane feeding is nothing to worry about,” said Scheidt.

In addition, Scheidt says some false chinch bug feeding has been seen in Vernon County.  False chinch bug suck sap from soybeans and can eventually kill them.  They are usually in weedy areas of the field and are most active in hot, dry weather. 

Warrior II, Cobalt or Lorsban work well to control false chinch bug.  Spot or edge treatment is usually only required; treat when 2-3 percent of plants are wilting or damaged. 

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.
###


Labels:

Friday, July 19, 2013

Southwest Missouri Field Crop Report for July 17, 2013

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on July 17 to prepare this week’s field scouting report.

CORN FLEA BEETLE

According to Scheidt, corn flea beetle feeding was seen on corn. Corn flea beetles are smaller black insects that can jump very high when disturbed.

“Flea beetles usually cause the most damage to corn if flea beetles are causing significant damage before the 4 leaf stage,” said Scheidt.

Flea beetles feed on corn leaves. Feeding looks like gray, rectangular tracks on the leaves when the top layer of the leaf is stripped off. Threshold levels for corn flea beetle in corn are five or more flea beetles per seedling up to the 4 leaf stage of corn.

Corn flea beetles can transmit Stewart’s Wilt virus.

Other insects to watch for in 8-leaf to tasseling corn are armyworm, stalk borer and root worms.

Stewart’s Wilt, transmitted by flea beetles, can be identified by linear pale green to yellow streaks that tend to follow the veins of leaves where beetles have fed. Streaks soon become dry and brown.

“Damage of Stewart’s Wilt is common in Missouri, but damage is seldom of economic significance,” said Scheidt.

OTHER PESTS

A small amount of rust was seen on corn. Rust begins as green or yellow lesions that develop to reddish-brown, raised pustules. Rust usually does not justify a fungicide.

“Rust does not overwinter in debris and crop rotation is the best management practice to prevent rust,” said Scheidt.

Non-threshold levels of Japanese beetle and grasshopper feeding were seen again this week in soybean. Defoliation threshold levels for soybeans are 30 percent defoliation before bloom and 20 percent defoliation during or after bloom. No diseases or other pests were seen.

MORE INFORMATION

There are some good resources available online. Corn Insect Pest Guide: http://extension.missouri.edu/explorepdf/manuals/m00166.pdf and Corn Disease Guide: http://ipm.missouri.edu/ipm_pubs/ipm1001.pdf .

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.


Labels: ,

Thursday, July 11, 2013

Southwest Missouri Field Crop Report for July 10

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579 
E-mail: scheidtjk@missouri.edu 

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on July 10 to prepare this week’s field scouting report.

BEETLES AND GRASSHOPPERS 

Japanese beetle and grasshopper feeding was seen in area corn and soybean.  Threshold levels for defoliation in corn and soybeans are 20 percent defoliation before bloom/pollination and 30 percent defoliation during or after bloom/pollination.

During pollination, only while the silk is green, threshold for Japanese beetle in corn is when three plus beetles are clipping silks to less than one-half inch.  A high rate of 10.3 oz/acre Hero is recommended to control Japanese beetles. 

“Be sure to walk far into the field to determine threshold levels.  Japanese beetles often feed only on the edges of fields and therefore do not require treatment,” said Scheidt. “It is also difficult to control Japanese beetle because they come in flights so insecticide residual usually only controls the first flight and not the following flights.”

HOLCUS SPOT 

Holcus spot was seen in corn fields also.  Holcus spot is identified by round to elliptical spots, ranging from 2-10 mm in diameter.  Lesions first appear water soaked and later become white to tan and eventually turn dry and brown. 

“Holcus spot can often be mistaken for herbicide damage,” said Scheidt. Holcus spot usually is not severe; crop rotation and tillage are the recommended control, although not very effective because of the broad host range of holcus spot.

SOYBEANS COUNT

According to Scheidt, there are two methods to estimate soybean population.  Measuring off 10 feet in one row and dividing by certain numbers according to row spacing, or using a hula hoop.

Go to at least three areas in each field and count population estimates in three spots within the three different areas to get the best population estimate.

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.


Labels: ,

Wednesday, July 03, 2013

Southwest Missouri Field Scouting Report for July 3

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on July 3 to prepare this week’s field scouting report.

This week, Scheidt reported finding Fusarium in area wheat fields, along with marestail, waterhemp and Japanese beetles.

Fusarium in wheat may result in shriveled, shrunken and/or bleached kernels that have a pinkish cast to them. High levels of Fusarium can cause a low germination rate. Scheidt recommends testing germination by performing a home test or sending a sample to the Missouri Seed Improvement Association or Missouri Department of Agriculture.

Scheidt confirmed that large marestail and waterhemp are being seen in fields. According to MU Extension weed specialist Kevin Bradley, for large marestail control before soybean emergence, four pints/acre Gramoxone + 4 ounces/acre Sencor should provide good control.

“If soybeans are emerged, there is not a good option to kill marestail. For large waterhemp control Roundup paired with Cobra, Flexstar or Blazer are the best options,” said Scheidt.

According to Scheidt, Japanese beetles have been seen in the area. They generally do not require treatment in crop fields.

Threshold levels for Japanese beetle in soybean are 30% defoliation before bloom and 20% defoliation during or after bloom. Threshold levels in corn are three or more Japanese beetle per plant clipping green silks to one-half inch.

“Japanese beetles do not prefer feeding on corn foliage and do not feed in the whorl; if they reach 30% defoliation, treatment is justified,” said Scheidt.

Scheidt also noted that cover crops are a good option for fallow fields. Summer cover crops include: radish, turnips and cowpeas paired with sorghum-sudan.

“Sorghum-sudan should not be followed by wheat due to its alleopathic properties. Winter cover crops should be planted from September to November and include: winter pea, crimson clover and hairy vetch paired with cereal rye,” said Scheidt.

Cover crop information: http://aes.missouri.edu/bradford/research/organic/cover-crops.php

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.


Labels: , ,

Wednesday, June 26, 2013

Southwest Missouri Field Scouting Report for June 26

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on June 26 to prepare this week’s field scouting report.

Based on her scouting stops this week, Scheidt says wheat is in the hard dough stage.

“Producers who are thinking about harvesting early should proceed with caution. If harvesting wet wheat, producers should dry wheat as it is going into the bin and make sure the first load is completely dry before adding more wheat,” said Scheidt.

If the grain bin is filled all at once, the wheat at the top of the bin will not dry and may sprout due to humid conditions that occur in June and July. Harvest wheat at 13.5% moisture in order to prevent fungus development in the storage bin.

This week, Scheidt did find signs of deer and birds feeding in soybeans.

“If the leaves and cotyledons are completely eaten, it is very likely the plant will not come back. This is usually not too big of a problem,” said Scheidt.

Rust and holcus spot were seen in corn; however, neither are a big concern. Holcus spot is identified by elliptical to round lesions on the leaves. The tan colored lesions appear watersoaked and larger lesions often have a yellow halo around the border and look similar to chemical drift.

Armyworm feeding was also seen in corn. Armyworm feeding can be identified by irregular and pinhole shaped holes where armyworms have fed inside the whorl. Treatment is justified when 25 percent of corn seedlings are damaged.

“I have also been getting a lot of calls about poison hemlock and Queen Ann’s lace in pastures. Poison hemlock has purple or red blotches on the stem and has a hollow stem. Queen Ann’s lace is hairless and solid green on the stem. Poison hemlock is toxic to livestock and can be toxic when baled if livestock eat enough of it,” said Scheidt.

For more informaiton on poison hemlock see: http://ipm.missouri.edu/IPCM/2012/2/Weed-of-the-Month-Poison-Hemlock/
MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.

Labels: , , , ,

Thursday, June 13, 2013

English Grain Aphids, Septoria, Fusarium and Armyworms all Found During Field Scouting this Week

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

Field Scouting Report for June 12…

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on June 12 to prepare this week’s field scouting report.

English Grain aphids have been seen in wheat heads. Threshold levels for English Grain aphids in wheat heads are 75-100 aphids/head. Treatment may be justified if yellowing plants are seen.

“Septoria head blotch and fusarium, or head scab, were also seen on kernels due to wet weather conditions. It is too late to spray for diseases in wheat,” said Scheidt.

Septoria can be identified by a black discoloration on the outside of the kernel. Head scab is identified by a pinkish orange fungus on the base of the spikelet, the spikelets are usually bleached.

“Armyworms may be moving out of the area. Dead, dried armyworms were seen on wheat heads as a result of a fungus brought in by the rain that killed them. Most armyworms are fully grown larvae that will turn into moths soon, those moths will move north to other non-armyworm-infested fields due to a pheromone armyworms let off,” said Scheidt.

Aphids have been reported in corn. Usually they do not justify treatment, threshold levels for English Grain and Corn Leaf aphid in corn are 400 aphids/plant.

Curled, stunted corn was also seen this week. Damage is likely due to herbicide damage.

“Herbicide damage in corn can occur in herbicides labeled for use in corn under prolonged cool, wet conditions. If herbicides labeled for use in corn are applied at planting, damage may also be seen under cool, wet conditions if the slots were not closed completely at planting,” said Scheidt.

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.

Labels: , , , ,

Thursday, June 06, 2013

Black Cutworms and Armyworms Among Concerns for Southwest Missouri Crop Farmers this Week

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on June 5 to prepare this week’s field scouting report.

Scheidt says Armyworms are still being seen at threshold level in wheat and fescue fields.

Threshold level for armyworms in wheat and fescue are 4/ sq. ft. or when 2-3 percent of heads are clipped. Mustang Max is recommended to control armyworm because it provides the longest residual effect.

“Armyworms were moving slow, but keep a close eye on them, checking 2-3 times per week for threshold levels, as armyworms at threshold levels can clip heads on half a field in one night. Recent rains may have slowed feeding and may have brought in a fungus that kills armyworms.

BLACK CUTWORMS

Below threshold levels of 1-2 percent of corn plants were clipped above ground due to black cutworm feeding. Threshold levels for black cutworm are when 6-8 percent of plants are clipped above ground or when 2-3 percent of plants are clipped below ground.

“Scout fields for black cutworm until corn reaches the 5-leaf stage. Black cutworms do not feed on corn once it is past the 5-leaf stage,” said Scheidt.

SWITCHING TO SOYBEANS

“If you are thinking about switching from corn to soybeans, soybeans should NOT be planted into fields where applications of atrazine or an atrazine premix have already been made this season,” said Scheidt. “The label says soybeans should not be planted until the following year due to the likelihood of soybean injury from residues of atrazine that may still be present in the soil.”

The average field half-life of atrazine is 60 days. High soil pH’s (>7.5) will also slow the degradation of atrazine, along with cool soil conditions. Fortunately, replanting corn or planting grain sorghum into these damaged areas will still be an option.

MORE INFORMATION

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension.

For more information on this scouting report, or to learn how you can receive it a week earlier by telephone, contact the MU Extension Center in Barton County at (417) 682-3579.

Labels: , , ,

Friday, May 24, 2013

Field Scouting Report for May 22: Applying Nitrogen to Wheat Now Will Not Increase Yield; Some Armyworms Spotted This Week

Contact: Jill Scheidt, agronomy specialist
Tel: (417) 682-3579
E-mail: scheidtjk@missouri.edu

LAMAR, Mo. –Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted area fields on May 22 to prepare this week’s field scouting report.

According to Peter Scharf, MU Extension state fertility specialist, at this point producers who applied anhydrous on corn ground in January or February have lost no more than 10-20 percent of the nitrogen applied. Dry fertilizer and earlier applied fertilizer have a greater risk for loss.

By going to the website and typing “Nitrogen Watch” into the search engine producers track rainfall and possible nitrogen loss by using the “Nitrogen Watch” web tool.

“It is too late to apply nitrogen to the wheat once 2 nodes are present on the stem. Research has shown that applying nitrogen in the fall then applying nitrogen past the boot stage will not increase yield,” said Scheidt. “It is not economical to apply nitrogen once wheat is in the boot stage because wheat will not efficiently use nitrogen and the increase that could be seen in wheat will not cover the cost of the nitrogen application.”

No diseases were seen this week in wheat. According to Scheidt, weather conditions are still favorable for fusarium head blight. Fungicides do not control head blight, fungicides can only suppress head blight. Fungicides that suppress fusarium should be applied at or during flowering. Remember to read the label for the appropriate timing of fungicide application.

ARMY WORMS

Armyworms were seen in wheat fields around Lamar, just under threshold level. Threshold level for armyworms is 6 per foot. Mustang Max or Hero is recommended to control armyworms. To scout for armyworms bang wheat heads together, then look on the ground for small to medium sized worms.

Armyworm feeding was also seen in corn, but not at threshold level. Armyworms begin feeding in the whorl to the outside of the whorl. Leaves appear as if they had been shot by a shot gun.

MORE INFORMATION

Helpful articles on funguses and fungicide ratings, late corn planting and burndown procedures can be found on the website at extension.missouri.edu or by calling the nearest county extension center.

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension.

For more information on this scouting report, or to learn how you can receive it a week earlier by telephone, contact the MU Extension Center in Barton County at (417) 682-3579.

Labels: , , , ,