Protecting crops, hopper to harvest. Extension expertise for the United States and Canada.
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Want the best alfalfa seed for pest resistance?
Check out the latest Alfalfa Variety Ratings publication at alfalfa.org/publications.php.
@NAFANews @MidwestForage #alfalfa
ALT An aphid on a leaf.
ALT Alfalfa roots with rot.
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From robotic weed control to maximizing farm profits, get all 32 of the 2026 CPN TV episodes at cropprotectionnetwork.org/cp….
Featuring @TBryant_VT @badgercropdoc @travisfaske @DylanMangel @NCLegumeLady @maddishires @MandyBish1 @BisonBeanDoc @cropdisease @OrtezCornCrops @PurdueCorn @DTelenko @cropstressOSU @MartinChilvers1 @MahDuffeck @alisonrISU @StrayerScherer @ScottGraham72 @psikkema1 @breannetidemann +more!
ALT A 3x3 pattern of the video thumbnails from various CPN TV episodes of 2026.
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"Overall, results showed that broadcast incorporation can be used to achieve faster planting without sacrificing yields compared to grain drills or air seeders, while transition to precision planting in narrow rows can help long-term improvement in wheat yields."
From the @ASA_CSSA_SSSA article "Field-scale comparison of precision planting, drill seeding, and broadcast incorporation in winter wheat: Effects on seed placement, yield, and grain quality."
By @SpartanAgronomy + others. @MSUEFieldCrops @MSUExtension @wheatgrowers #wheat @WheatInnovation
ALT Rows of small wheat plants. Image by Warren Pierson.
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“Seeding rates above the [agronomic optimum seeding rate] resulted in no benefit under favorable conditions, since higher plant populations mostly benefit from environments exposed to weather events that reduce population (e.g., hail).”
From the @ASA_CSSA_SSSA article "Seeding rate effects on soybean seed yield components and economic return" doi.org/10.1002/agj2.70534 by Fernando M. Marcos, Caio L. dos Santos, Natan A. Seraglio, and Mark A. Licht
@badgerbean @PurdueSoybean @SoybeanScience1 @ISUExtension #soybean #USSoy
ALT Soybean seedlings in a row.
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“Fall soil samples collected after harvest (up to 6 weeks after the R8 growth stage) can be useful to monitor changes in [root-knot nematode] population densities or to make management decisions for the subsequent cropping season. Soil samples should be collected at an 8 to 10-inch (20 to 25-cm) soil depth within the root zone of the previously existing crop.”
From the Overview of Root-Knot Nematodes cropprotectionnetwork.org/pu… by @travisfaske @baldpathologist @MartinChilvers1 @PACropDoc @dsmuelle @OnofreLab @ppp_trey @Nemasoil @alabamaED @DTelenko @AlbertTenuta +more
@TheSCNCoalition @MahDuffeck @NematodeGuy @UFcropnematodes #USSoy
ALT Roots with root-knot nematode galls on them.
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Fusarium stalk rot causes shredded pith that may be tan to light pink. Brown streaks may be observed on the lower internodes.
The fungi overwinter in corn residue, other dead plant residue, and in corn seed.
Resistance to Fusarium stalk rot is available. Rotation and tillage will reduce inoculum.
@DTelenko @badgercropdoc @MandyBish1 @MartinChilvers1 @maddishires @alisonrISU @TamraJacksonZ @baldpathologist @NationalCorn #corn #harvest26
ALT Illustration of the Fusarium stalk rot disease cycle showing overwintering, infection, and development.
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Set the combine to harvest clean, whole kernels, as aflatoxins & fumonisins are often concentrated in light, damaged kernels.
To minimize kernel damage, use the lowest possible cylinder speed necessary to shell grain effectively while maintaining acceptable loss levels (less than 1%). Excessive cylinder speed is the leading cause of kernel damage, so adjust concave clearance to avoid breaking cobs excessively before increasing cylinder speed. Ensure sufficient airflow to remove chaff & small, light kernels.
Read more at cropprotectionnetwork.org/pu….
@croptoxcare @travisfaske @baldpathologist @MartinChilvers1 @ppp_trey @badgercropdoc @AlbertTenuta @alisonrISU @MandyBish1 @DaisyHAhumada @PACropDoc @maddishires @TamraJacksonZ @MahDuffeck @DTelenko @YuanZeng3 @alabamaED #corn
ALT Corn being dumped into an auger.
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Regularly monitor bins for potential issues.
If grain becomes wet, use fans to increase airflow and reduce grain moisture levels, preventing fungal growth.
If mycotoxin-producing fungi begin to grow in high-moisture corn, mycotoxin level in stored grain can increase. Be sure to wear proper personal protection equipment, if necessary, for examining grain bins.
Read more at cropprotectionnetwork.org/pu….
From Extension. @travisfaske @baldpathologist @MartinChilvers1 @ppp_trey @badgercropdoc @AlbertTenuta @cropdoc08 @MandyBish1 @MahDuffeck @maddishires @DTelenko
#corn #grain @NationalCorn @TamraJacksonZ @alisonrISU @alabamaED
ALT Row of four grain bins near a field.
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Anthracnose is likely the most prevalent stalk rot in the eastern United States. Affected plants have shredded pith and die prematurely. Anthracnose also causes a distinctive blackening of the stalk rind.
The fungus overwinters in corn residue and infects plants through the roots or by spores that splash onto the stalk or are carried by insects that may introduce them into feeding wounds. The disease usually does not appear until late in the season and occurs more severely where corn follows corn, especially in reduced tillage.
Resistance to anthracnose is available in some hybrids. If a hybrid is resistant to stalk rot, it is not necessarily resistant to the leaf blight phase. Rotation and tillage will reduce inoculum.
@alisonrISU @MartinChilvers1 @badgercropdoc @TamraJacksonZ @alabamaED @MandyBish1 @DTelenko #corn @NationalCorn @maddishires @baldpathologist @travisfaske
ALT Split corn stalk showing dark fungal growth on the exterior and rotted pith tissue inside.
ALT Split corn stalk showing rotted tissue near the node and into the internode.
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Many diseases survive in crop residue like tar spot, northern corn leaf blight, red crown rot, sudden death syndrome, and Fusarium head blight.
Knowing the risks for your field can help inform future management decisions, like choosing disease-resistant hybrids or varieties for next season.
@alisonrISU @baldpathologist @DTelenko @badgercropdoc @MartinChilvers1 @DylanMangel @BisonBeanDoc #corn #soybean #wheat
ALT Illustration of Fusarium head blight disease cycle showing overwintering, infection, and further disease development.
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Abnormal ears in corn - when and why they develop: cfaes.osu.edu/fact-sheet/abn…
From @CFAES_OSU's @OrtezCornCrops.
@corn_network @KentuckyCrops @PurdueCorn @RachelVCott @PrezaFontes @Eabfranc @NationalCorn @OhioCornWheat #corn #harvest26
ALT Corn ear with a deformity where it is pinched in the middle.
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Foliar Fungicide Efficacy and Environmental Influences in Crop Disease Management.
This new @PlantDiseaseJ article is published at apsjournals.apsnet.org/doi/a….
From @MorganGoodnight @mizuno_monica @NabinKDangal @DTelenko @dsmuelle +others.
ALT Infographic showing how various aspects of the environment impact fungicide.
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Check out the new @ISDPPodcast episode "The Crimson Crown: Soybean Red Crown Rot Uncovered" from Extension at open.spotify.com/episode/6JJ….
@BorisCamiletti @ILSoybean @FieldAdvisor @DTelenko @MartinChilvers1 #USSoy
ALT Soybean stem with red fungal growth.
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Cotton boll rots are caused by numerous fungi and bacteria. Identifying the primary pathogen is difficult due to non disease-causing fungi on rotten bolls. Yield losses are greater with frequent rainfall and dense crop canopies.
Fusarium boll rot is the most common boll rot in the U.S., causing bolls to turn brown to black with pink or orange masses under humid conditions. Phytophthora boll rot shows soft, watery, black rot symptoms, while Xanthomonas boll rot starts as small, circular, water-soaked lesions that turn black when dry. Seed from infected bolls are likely to carry bacteria that can impact the subsequent crop.
Managing plant growth, using pathogen-free seed, and controlling insects can reduce the impact of boll rots. Fungicide applications have limited efficacy in managing boll rots.
@travisfaske @baldpathologist @bobkemerait @ppp_trey @DaisyHAhumada @MahDuffeck @OnofreLab @Cotton_Guy @CottonInc #cotton
ALT Cotton boll showing rot.
ALT Cotton boll showing rot.
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Soybean Diaporthe/Phomopsis CPN TV from Extension at piped.video/EvkNdN5epyY.
@febina_m @NDSUExtension @NDAgExpStation @BisonBeanDoc @NDSoybean @NDSoyGrowers #soybean #USSoy
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Still need CCA CEUs? Read crop protection pubs* and then take the quizzes. Start at cropprotectionnetwork.org/pu…
@CCASoundAdvice @CCAOntario @IL_CCA @CertifiedCrop @IowaCCA @ASA_CSSA_SSSA @ARcropadvisers @nwccafwaa @rockymountcca @ND_CCA @nwccafwaa @PrairieCCA #CCA #CEU
*not all publications have CCA quizzes - look at the end of each to find out if there is a quiz.
ALT Man in a soybean field looking at a soybean plant.
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Scouting for Soybean Seed Diseases from Extension at doi.org/10.31274/cpn-2019062….
@AlbertTenuta @cropdisease @MartinChilvers1 @febina_m @dsmuelle @badgercropdoc @cropdoc08 +others @maddishires @MandyBish1 @DylanMangel @BisonBeanDoc @baldpathologist @alabamaED @travisfaske @MahDuffeck @DTelenko #harvest26 #soybean #seed #USSoy
ALT Soybean seeds with mold growing on them.
ALT Soybean seeds with purple discoloration.
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An Overview of Root-Knot Nematodes from Extension at cropprotectionnetwork.org/pu….
@travisfaske @baldpathologist @MandyBish1 @ppp_trey +others @alabamaED @NCLegumeLady @NCExtension @CUESNews #soybean #nematodes #USSoy
ALT Illustrated root-knot nematode disease cycle showing overwintering to infection and development and back to an overwintering stage.
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Fungi that cause ear rots can continue to grow, spread, and produce mycotoxins after corn reaches maturity and during storage if grain is not dry.
Wet grain can deteriorate quickly in a harvest truck or grain bin, especially under warm post-harvest conditions, leading to increased mycotoxin levels. Proper storage at low moisture levels can significantly reduce the risk of mycotoxin development.
High-temperature drying effectively stops fungal growth and mycotoxin production. However, it will not reduce existing mycotoxins levels already present in the grain. Quick drying at high temperatures is preferable to slow drying with low temperatures. Exercise caution when using low-temperature, in-bin dryers for moldy corn, and ensure proper airflow and ventilation when storing dry corn to maintain grain quality.
A good post-harvest drying target for storing grain is 15.0 to 15.5 percent moisture. This moisture level is sufficient for short-term storage over the winter. Additionally, cooling the grain to below 55°F (13°C) will slow the growth of fungi and inhibit insect activity.
Read more at cropprotectionnetwork.org/pu….
@travisfaske @baldpathologist @MartinChilvers1 @alisonrISU @ppp_trey @badgercropdoc @AlbertTenuta @MandyBish1 @MahDuffeck @maddishires @DTelenko @ncga #corn #harvest26
ALT Corn inside a grain bin.
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It's essential to test grain for mycotoxins if corn ear rots are a significant problem. Obtaining a representative sample for mycotoxin testing is critical for accurate results.
Read more in Corn Grain and Silage Sampling and Mycotoxin Testing cropprotectionnetwork.org/pu….
From @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @MahDuffeck @alisonrISU @maddishires @DTelenko +others.
#corn #grain #mycotoxins @croptoxcare
ALT Corn ear with green mold and kernels sprouting.
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Ear rot issues during #harvest26?
It's critical to ID ear rots in field as many of the fungi responsible for ear rots produce mycotoxins, which can harm livestock and humans. Grain contaminated with mycotoxins can be difficult to market and may be docked in price.
For more info, check out An Overview of Ear Rots at cropprotectionnetwork.org/pu….
@alisonrISU @MandyBish1 @MartinChilvers1 @travisfaske @ppp_trey @badgercropdoc @DTelenko @BorisCamiletti @baldpathologist #corn
ALT Corn ear with white mold on kernels.
ALT Corn ear with green mold on kernels and sprouting kernels.
ALT Corn ear with green mold on kernels.
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Fusarium stalk rot causes shredded pith that may be tan to light pink. Brown streaks may be observed on the lower internodes.
The fungi overwinter in corn residue, other dead plant residue, and in corn seed.
Resistance to Fusarium stalk rot is available. Rotation and tillage will reduce inoculum.
@DTelenko @badgercropdoc @MandyBish1 @MartinChilvers1 @maddishires @alisonrISU @baldpathologist @alabamaED @travisfaske @ppp_trey @cropdoc08 #corn
ALT Illustration of the Fusarium stalk rot disease cycle demonstrating how the fungus overwinters in corn residue, is spread and infects the plant, and develops within the plant.
ALT Split corn stalk showing degraded pith tissue and pink mold.
ALT Three split stalks on a blue background showing pith that has rotted.
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Check out Scouting for Soybean Seed Diseases from Extension at doi.org/10.31274/cpn-2019062….
@AlbertTenuta @cropdisease @MartinChilvers1 @febina_m @dsmuelle @badgercropdoc @cropdoc08 +others @maddishires @MandyBish1 @DylanMangel @BisonBeanDoc @baldpathologist @alabamaED @travisfaske @MahDuffeck @DTelenko #harvest26 #soybean #seed #USSoy
ALT Soybean pod split open to reveal purple discoloration on soybean seeds.
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"Delaying harvest increases the risk of pod and stem blight, because plants are likely to be exposed to cool and wet conditions that favor disease development. Thus, timely harvest will help reduce the risk of seed decay and preserve seed quality..."
From An Overview of Pod and Stem Blight and Diaporthe Seed Decay doi.org/10.31274/cpn-2019062… by @dsmuelle @cropdisease @MartinChilvers1 @febina_m @AlbertTenuta @cropdoc08 +more
@DylanMangel @BisonBeanDoc @baldpathologist @maddishires @MandyBish1 #soybean #SeedAudio #USSoy
ALT Soybean seed showing fungal growth and discoloration inside a split pod.
ALT Section of soybean stem with linear rows of dark fungal growth.
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Corn stalk rots cost farmers $4.2 billion in the past five years.
Test stalk integrity using the pinch test. Prioritize harvest for a field if 10%+ stalks are rotted.
@alisonrISU @DTelenko @MandyBish1 @maddishires @MartinChilvers1 @badgercropdoc @baldpathologist @cropdoc08 #corn @NDSUExtension @travisfaske @ppp_trey
ALT Corn stalk pinched by a hand.
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There are five major mycotoxins associated with ear rots. Toxic effects vary by type, concentration, exposure, and animal species.
If a field has kernel or ear rot problems (10%+ of ears are moldy), test for mycotoxins.
For more info, see Corn Mycotoxin FAQs at cropprotectionnetwork.org/pu….
From Extension. @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @PACropDoc @MahDuffeck @alisonrISU @DTelenko
@croptoxcare #harvest26 #corn
ALT Pink mold on corn ear.
ALT Green mold on corn ear.
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“Soybean is most susceptible to hail injury during the later reproductive (R) growth stages as the plant's ability to compensate for damage decreases...When pod damage is prevalent, prioritize affected fields for early harvest to minimize harvest issues such as lodging, reduced seed quality, green stem, seed diseases, etc.”
From An Overview of Hail Injury and Fungicide Use on Soybean cropprotectionnetwork.org/pu… by @DylanMangel @MartinChilvers1 @AlbertTenuta @dsmuelle @ISU_IPM @badgerbean
@travisfaske @cropdoc2 @ppp_trey @badgercropdoc @SpurlockLab @BisonBeanDoc #soybean #hail #USSoy
ALT Soybean field with plants showing missing leaves and damaged stems from hail.
ALT Soybean plant showing missing leaves from hail.
ALT Hail stones on the ground and in a person's hand.
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Scouting for Corn Ear Rots. Watch at piped.video/LN-kKuaaxKc.
From @universityofky's @cropdoc08.
@alisonrISU @MartinChilvers1 @badgercropdoc @MandyBish1 #corn
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Five major mycotoxins are associated with corn ear rots. If fields had >10% moldy ears, test for mycotoxins.
Read more in Extension's cropprotectionnetwork.org/pu…
@badgercropdoc @baldpathologist @travisfaske @MartinChilvers1 @ppp_trey @AlbertTenuta @MahDuffeck @PACropDoc @alisonrISU @MandyBish1 @cropdoc08 @AlbertTenuta @LSUAgCenter @croptoxcare
ALT When crushed corn kernels are exposed to a black light, they can glow if kojic acid is present. Two piles of corn are shown. Each pile is shown under regular light and under black blight. In one the pile with kojic acid, it is shown glowing under the black light.
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Fusarium root, crown and foot rot is widespread and can be found in all wheat production regions of the U.S. and Canada. Seedling blight occurs when Fusarium-infected seed is sown. Infected seedlings tend to be reddish with poor vigor and poor tiller production.
Planting into a prepared seedbed with available moisture will reduce stress and disease risk. Depending on the causal Fusarium species, an extended rotation away from a small grain crops reduces risk. Fungicide seed treatments can be used for early season protection against seedling blight and root rot.
@NDSUExtension @StrayerScherer @travisfaske @BorisCamiletti @DTelenko @KelseyFAndersen @cropdisease @ppp_trey @MartinChilvers1 @OSUwheatdisease @AlbertTenuta @maddishires @badgercropdoc @thppdd_lab @OhioCornWheat @WheatInnovation @WheatPete #wheat
ALT A dark brown to red lesion near the first node of a wheat plant.
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Aphanomyces root rot can reduce yield in newly seeded and established alfalfa. If conditions are favorable after seeding, complete loss can occur. The disease can reduce stand longevity, resulting in the need for more frequent rotation to a less profitable forage crop.
One of the most effective practices to reduce the impact of Aphanomyces root rot is to plant cultivars with race-specific resistance. Many commercial cultivars have resistance to one or both races of the pathogen.
Read more at cropprotectionnetwork.org/pu…
From Extension. @cropdoc08 @badgercropdoc @MartinChilvers1 @DTelenko @MahDuffeck @NAFANews @MidwestForage @NDSUExtension @MSU_Extension @UMNExt #alfalfa
ALT Alfalfa seedlings showing disease symptoms like wilting and discoloration.
ALT Alfalfa roots dug from the ground showing rot.
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Fungi that cause ear rots can continue to grow, spread, and produce mycotoxins after corn reaches maturity and during storage if grain is not dry.
Read more at cropprotectionnetwork.org/pu….
Ask local Extension for more info. @travisfaske @baldpathologist @MartinChilvers1 @dsmuelle @ppp_trey @badgercropdoc @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @PACropDoc @MahDuffeck @LSUAgCenter @maddishires @DTelenko @ncga #corn #harvest26
ALT Corn inside a grain bin.
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Keep livestock healthy. Manage mycotoxins in silage. Watch the CPN TV episode on this topic at piped.video/nK_y3V1fG8U.
From @badgercropdoc & @MartinChilvers1.
@NationalCorn @WIAgContent @MSUEFieldCrops @MSUExtension @wicorngrowers @MI_Corn @croptoxcare #mycotoxins #corn #silage
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“The most likely cause of soybean stem purpling is the buildup of anthocyanins in the stem tissue. Anthocyanins are non-photosynthetic pigments that help protect plant cells from oxidative damage caused by too much light.”
From The Science Behind Late Season Purple Soybean Stems doi.org/10.31274/cpn-2021092… by @dsmuelle @badgerbean @ISU_IPM +more
@SoybeanScience1 @SoyResearchInfo #soybean #USSoy
ALT Soybean stems with purple discoloration.
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Fungicide is often considered after hail injury to corn due to the plant health statements present on many fungicide labels coupled with the natural desire to take action following a hailstorm.
An Overview of Hail Injury and Fungicide Use on Corn provides info to evaluate the potential benefits of fungicide application, and make the most profitable management decisions following hail injury in corn in upcoming growing seasons.
Read more at cropprotectionnetwork.org/pu….
@MartinChilvers1 @AlbertTenuta @ISU_IPM @badgercropdoc @PurdueCorn @DaisyHAhumada @baldpathologist @MandyBish1 @travisfaske @NDSUExtension @cropdoc2 @UTcrops @PlantPathISU @ppp_trey @cropdoc08 #corn #fungicide
ALT Hand with large hailstones.
ALT Corn field with shredded and destroyed plants from hail.
ALT Corn field with shredded and destroyed plants from hail.
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Plant certified disease-free wheat seed to minimize the risk of seed-transmitted Stagonospora. Select wheat varieties with resistance to the disease. Resistance to Stagonospora on the leaves and glumes may differ, so check with seed companies to determine how they established their resistance ratings.
Read more in An Overview of Stagonospora at cropprotectionnetwork.org/pu….
From @MartinChilvers1 @NDSUExtension @ILextension @cropdisease @badgercropdoc @cropdoc08 @travisfaske @AlbertTenuta +more
@USWBSI @WheatInnovation @OhioCornWheat @TexasWheat @wheatgrowers #wheat
ALT Wheat leaf with dead and yellowish leaf tissue. Photo by Nathan Kleczewski.
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Corn stalk rots cost farmers $4.2 billion in the past five years.
Test stalk integrity using the pinch test. Prioritize harvest for a field if 10%+ stalk rot.
@alisonrISU @DTelenko @MandyBish1 @maddishires @MartinChilvers1 @badgercropdoc @YuanZeng3 @baldpathologist @MahDuffeck @cropdoc08 @alabamaED @OnofreLab @NDSUExtension @travisfaske @ppp_trey #corn #harvest26
ALT Hand pinching a corn stalk near the base to determine if stalk degradation has occurred.
ALT Split corn stalk showing pink mold inside.
ALT Split corn stalk showing degradation of the interior pith as well as black fungal growth on the inside and outside of the stalk.
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“Fall soil samples collected after harvest (up to 6 weeks after the R8 growth stage) can be useful to monitor changes in [root-knot nematode] population densities or to make management decisions for the subsequent cropping season. Soil samples should be collected at an 8 to 10-inch (20 to 25-cm) soil depth within the root zone of the previously existing crop.”
From the Overview of Root-Knot Nematodes cropprotectionnetwork.org/pu… by @travisfaske @baldpathologist @MartinChilvers1 @PACropDoc @dsmuelle @OnofreLab @ppp_trey @Nemasoil @alabamaED @DTelenko @AlbertTenuta +more
@TheSCNCoalition @MahDuffeck @NematodeGuy @UFcropnematodes #USSoy
ALT Soybean roots with root galls.
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Planting disease-resistant wheat varieties is the first step in managing major wheat diseases like wheat streak mosaic, Fusarium head blight, stripe rust, and tan spot.
@USWBSI @WheatInnovation @OhioCornWheat @wheatgrowers @WheatTrials @maddishires @travisfaske @DTelenko @StrayerScherer @ppp_trey @MartinChilvers1 @baldpathologist @MandyBish1 @badgercropdoc @thppdd_lab
ALT Wheat streak mosaic on wheat plants. It appears as yellowish streaks on leaves.
ALT Orange spores on a wheat leaf.
ALT Orange spores on a bleached wheat head indicative of Fusarium head blight.
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Sclerotinia crown and stem rot of alfalfa is most damaging during the first production or harvest year.
If conditions favor disease after seeding a new stand, complete loss can occur. Reduced biomass and poor yield may be observed if stands are affected within the first year of planting.
Find out more about this disease at cropprotectionnetwork.org/pu….
From Extension. @cropdoc08 @KelseyFAndersen @ISU_IPM @badgercropdoc @MahDuffeck @MartinChilvers1 @jjmichel_crops @DTelenko @dsmuelle @travisfaske @USDA_ARS @ccecornell @UMNExt #alfalfa
ALT Sclerotinia crown and stem rot disease cycle illustration showing the disease process from planting alfalfa to infection to plant death.
ALT Alfalfa plants with white mold growing on them.
ALT Alfalfa plant with a wilted stem.
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Watch Crown Rot of Corn CPN TV at piped.video/3t5-neZu-RE.
From Extension. @alisonrISU @UNL_CropWatch
@UNLExtension @DylanMangel @Talon_Mues @ISUANR @ISUExtension @livdooley14 #corn
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“Charcoal rot symptoms are most prevalent during hot and dry weather conditions, especially during the soybean reproductive growth stages...The characteristic sign of charcoal rot is the presence of microsclerotia in root and stem tissue, which may not be visible until plant maturity or death.”
From the updated publication An Overview of Charcoal Rot at cropprotectionnetwork.org/pu… by @badgercropdoc @MartinChilvers1 @NCLegumeLady @dsmuelle @maddishires @BisonBeanDoc and @cropdoc08.
@baldpathologist @MandyBish1 @MahDuffeck @travisfaske @ppp_trey @DTelenko @AlbertTenuta #soybeans #fungi #USSoy
ALT Soybean stems showing dark fungal growth on the interior and exterior.
ALT Soybean field with a large spot of dead and soybean plants due to charcoal rot.
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There are five major mycotoxins associated with ear rots. Toxic effects vary by type, concentration, exposure, and animal species.
If a field has kernel or ear rot problems (10%+ of ears are moldy), test for mycotoxins.
For more info, see Corn Mycotoxin FAQs at cropprotectionnetwork.org/pu….
From Extension. @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @MahDuffeck @alisonrISU @DTelenko #harvest26 #corn #agtwitter @croptoxcare
ALT Corn with signs of Aspergillus ear rot as a result of infection by the fungus Aspergillus flavus. This image shows a corn ear held over a field and the ear has green mold between some of the kernels.
ALT Characteristic Gibberella ear rot signs on corn which appear as pink and white mold on a corn ear, as shown here.
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Crop Protection Network creates FREE tools to help farmers and agronomists manage crop pests. From Extension.
◾️Fungicide ROI Calculator: cropprotectionnetwork.org/ro…
◾️Fungicide Efficacy Guide: cropprotectionnetwork.org/fu…
◾️Disease Forecasting: cropprotectionnetwork.org/cr…
◾️Crop Issue Reports: cropprotectionnetwork.org/cr… +lots more.
Visit us at the #FarmProgressShow in tent 718!
@FPShow #FPS26 @alisonrISU @DTelenko @alabamaED @badgercropdoc @travisfaske @baldpathologist @MandyBish1 @DylanMangel @BisonBeanDoc @maddishires @ppp_trey
ALT Screenshot of the Crop Lookout tool.
ALT Screenshot of the Crop Risk tool.
ALT Screenshot of the corn fungicide efficacy guide.
ALT Screenshot of the fungicide ROI calculator.
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It's essential to test grain and whole-plant silage for mycotoxins if corn ear rots are a significant problem. Obtaining a representative sample for mycotoxin testing is critical for accurate results.
Read more in Corn Grain and Silage Sampling and Mycotoxin Testing cropprotectionnetwork.org/pu….
From @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @MahDuffeck @alisonrISU @maddishires @DTelenko +others.
#corn #mycotoxins @croptoxcare
ALT Corn ear with green fungus.
ALT Corn ear with green fungus and kernels sprouting.
ALT Corn ear with white fungus.
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1,191
NEW Cotton pest management strategic plan for the U.S. Delta at ipmdata.ipmcenters.org/sourc….
Includes Louisiana, Mississippi, Arkansas, Tennessee, and Missouri.
From @baldpathologist @kmbiss @CottonInc @travisfaske @ppp_trey @LSUNematology @TNplantDR.
@southernipm @TheCottonBoard @LSUAgCenter #cotton
ALT cotton leaves
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Crown rot symptoms are more commonly seen at the end of the season when corn is nearing maturity. Affected plants often die early and may be referred to as “ghost” plants describing the grayish-green discoloration often observed.
Check out the Crown Rot FAQ at cropprotectionnetwork.org/pu….
@alisonrISU @cropdoc08 @baldpathologist @MandyBish1 @MahDuffeck @travisfaske @alabamaED @badgercropdoc @DTelenko @AlbertTenuta @YuanZeng3 #corn
ALT A corn plant that has died early amid healthy plants.
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“Symptoms caused by red crown rot can look similar to those caused by several other diseases. The presence of perithecia on lower stems and roots can improve the accuracy of a red crown rot diagnosis, but other fungi may produce structures that can look similar.”
From An Overview of Red Crown Rot of Soybean cropprotectionnetwork.org/pu… by @cropdisease @baldpathologist @MandyBish1 @BorisCamiletti @MartinChilvers1 @NCLegumeLady @ppp_trey @badgercropdoc @DTelenko +more
@travisfaske @maddishires @ISUCropNews @BisonBeanDoc @SpurlockLab @DylanMangel @alabamaED @ILSoybean @INSoybean #USSoy
ALT Soybean stem with red fungal growth.
ALT Soybean leaves with yellowing and dead tissue.
ALT Soybean stems with fungal growth.
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“These results support prioritizing cereal cover crops over brassica or legume cover crops in [taproot decline]-affected systems when disease is a primary consideration.”
From @planthealthprog's Rethinking Cover Crops: Host Potential for Xylaria necrophora, the Causal Agent of Taproot Decline in Soybean doi.org/10.1094/PHP-02-26-00… by @QiurongF @alejorojas2 +more
@MartinChilvers1 @MSUEFieldCrops @travisfaske @baldpathologist @AginArk @ArkAgResearch #USSoy
ALT Yellowing soybean leaves caused by taproot decline.
ALT Soybean roots impacted by taproot decline.
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“Red crown rot has been reported to reduce soybean yield by 25-70 percent in the U.S. Impacts on a field-scale may be minor at first when patches are small, but as patches get larger over time, red crown rot’s impact on field-scale yield averages can become greater.”
From An Overview of Red Crown Rot of Soybean cropprotectionnetwork.org/pu… by @cropdisease @baldpathologist @MandyBish1 @BorisCamiletti @MartinChilvers1 @NCLegumeLady @ppp_trey @badgercropdoc @DTelenko +more
@travisfaske @maddishires @ISUCropNews @BisonBeanDoc @SpurlockLab @DylanMangel @alabamaED @ILSoybean @INSoybean #USSoy
ALT Soybean field with patches of yellowish plants caused by red crown rot.
ALT Soybean stem with red fungal growth.
ALT Soybean plants with yellowing and browning leaves.
ALT Soybean stem with reddish discoloration.
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