Tom Allen

Extension/Research Professor and Plant Pathologist with Mississippi State University at the DREC - corn, cotton, grain sorghum, rice, soybean, and wheat

[Will Eubank @eubank_will]

Great morning at Stoneville with the Delta Region ANR agents. MSU Extension row crop specialists provided an in-season update on current crop conditions, production challenges, and management recommendations across Mississippi’s row crops.

[Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 @MahDuffeck]

Maps for the Corn leafhopper and Corn stunt pathogens distribution in the U.S. available at @CropNetwork

[Crop Protection Network @CropNetwork]

Scouting for Soybean Stem Diseases pub from Extension at https://t.co/fOXO7c5Skv.

@cropdoc08 @baldpathologist @cropdisease @BorisCamiletti @MartinChilvers1 @DylanMangel @dsmuelle @badgercropdoc @AlbertTenuta @DTelenko @UMNExt @BisonBeanDoc @travisfaske @MandyBish1 +others #soybeans #AgTwitter #USSoy

[Erick Larson @MStateCorn]

Why is our corn short? A common cultural factor affecting height is planting date.

Early-plantings develop when days are cooler and shorter, reducing height. Freeze damage also contributed.

If your leaf canopy intercepts 90% of light, yield should not be not be reduced. 🌽

[Bob Kemerait @bobkemerait]

We’ve been getting some calls lately about this gray, granular fungal growth on peanuts and even some young cotton. This is a “slime” mold, though it isn’t slimy. It is here now because of weather, and it is harmless. UGA Extension

[Tom Allen @baldpathologist]

Similar calls in MS……ignore these plants #mscrops

[Bob Kemerait @bobkemerait]

We’ve been getting some calls lately about this gray, granular fungal growth on peanuts and even some young cotton. This is a “slime” mold, though it isn’t slimy. It is here now because of weather, and it is harmless. UGA Extension

[Crop Protection Network @CropNetwork]

Track disease and insect movement at https://t.co/DsCawKFeq9.

Keep tabs on▪️southern rust▪️red crown rot▪️reniform nematode▪️root-knot nematode▪️stripe rust

From Extension. @DTelenko @tjcksn @BorisCamiletti @bobkemerait @alisonrISU @badgercropdoc @MandyBish1 @maddishires @MartinChilvers1 @ashmfaris @baldpathologist @cropdoc08 @dsmuelle @DylanMangel @NDSUcerealpath @AlbertTenuta @DaisyHAhumada @YuanZeng3 @PACropDoc @TNplantDR #soybean #corn #wheat #agx #grow26

[Tom Allen @baldpathologist]

A weather forecast so precise that it only tells you it’s gonna rain RIGHT as the drops start falling…..man….thats what we’ve got this year!

[Erick Larson @MStateCorn]

Y-dropping is a great alternative method to apply liquid N fertilizer. You can apply until nearly tassel, cover acreage fast and reduce tire footprint compared to side-dressing.

You can also apply more N compared to top-dressing granular fert, since there is no leaf burn.🌽

[Tom Allen @baldpathologist]

One of the things we don’t talk about enough…..Xylaria necrophora, the causal organism of taproot decline, can also be a seedling disease-causing organism @MSSOY #mscrops

[Crop Protection Network @CropNetwork]

In general, chemical nematicides move more readily in coarse-textured soils than fine-textured soils, assuming adequate water infiltration.

As a result, chemical nematicides often have a larger zone of root protection in coarse-textured soils than in fine-textured soils such as silts and clays.

Moreover, the zone of protection is more vertical like a “chimney” to protect the developing taproot rather than horizontal to protect lateral roots. 

Therefore, seed-applied nematicides typically work better in strongly tap-rooted crops such as cotton and soybean compared to fibrous root systems like corn.

Read more in "How Seed-Applied Nematicides Work" at https://t.co/Wix4v46A5E.

From @travisfaske @MartinChilvers1 @badgercropdoc @CFAES_OSU & @CUESNews. Funded by @CottonInc.

@UFcropnematodes @UFEntNem @UCDavisEntomolo @NematodeGuy #cotton #soybean #nematodes

[Farm Journal @FarmJournal]

Gerry Powers uncovered one of most historic artifact hoards on record, a massive cache of quartzite blades. https://t.co/5WEEQPs0WL

[Chris Bennett @ChrisBennettMS]

Unreal. When you find El Dorado buried under one foot of sand. Truly, this fella stepped on the motherlode.
https://t.co/axHvkpBCZJ

[Tom Allen @baldpathologist]

Add some moisture, cooler than normal temps, overcast days…..and you get some fun stuff growing on grass #slimemold

[Erick Larson @MStateCorn]

Several questions this morning about this topic. Wait for soils to dry before applying nitrogen fertilizer.

🌽#mscorn #MSUext #saturated

[Crop Protection Network @CropNetwork]

Rhizoctonia infection in cotton can cause seed rot and damping-off with sunken lesions on the hypocotyl (often referred to as sore shin).

Rhizoctonia is commonly found in cotton soils and can occur with other seedling pathogens, forming the “cotton seedling disease complex.”

Management for Rhizoctonia include planting high-quality seed in well-drained soils and using seed treatment fungicides. Certain fungicide products applied in the seed furrow at planting can reduce disease caused by Rhizoctonia.

@travisfaske @ppp_trey @baldpathologist @SpurlockLab #cotton #grow26

[Erick Larson @MStateCorn]

Despite rain coinciding with tasseling, you can still fully benefit from urea applied later. Sustaining N through grain fill is not reliant on pre-tassel timing.

Soil does need to be dry to allow incorporation.

Also, fertilizer will not hamper pollination.

🌽#mscorn #MSUext

[Tom Allen @baldpathologist]

@Agronomy_Guy @MississippiCorn Nope. No temp reductions, no stalk strength, no “plant health”, those things are not responses from fungicides in unbiased data sets…..but that’s the key word, “unbiased”

[Tom Allen @baldpathologist]

Once again, and for the second time this week, fungicides should be used to prevent losses from disease. All the other “talk” about fungicides is just static @MississippiCorn #mscrops

[Crop Protection Network @CropNetwork]

"Most fungicides resulted in greater breakeven probabilities with increasing disease severity. The results emphasize that fungicide applications occurring at VT/R1 and when disease severity exceeds 5% are more likely to result in a positive economic gain."

From the @phytofrontiers article at https://t.co/nuhqww48h5.

By @NabinKDangal @badgercropdoc @baldpathologist @MandyBish1 @kmbiss @MartinChilvers1 @travisfaske @NDSUcerealpath @AG__McCoy @dsmuelle @rodrigobonofre @ppp_trey @alisonrISU @alabamaED @DTelenko @AlbertTenuta @cropdoc08 +others. #corn #fungicide #ROI @plantdisease

[Crop Protection Network @CropNetwork]

“These results demonstrate that seed-applied nematicides provide minimal yield protection under high [root-knot nematode] population densities, whereas host plant resistance remains the most effective and reliable management strategy in soybean production.”

From @PlantDiseaseJ article https://t.co/WxmpcLfhiC by @BigBaker63 @travisfaske +more

@AR_Extension @ArkAgResearch @arkansassoybean @TheSCNCoalition #soybean #USSoy

[Phillip L. Vines @PhillipVines]

The side-by-side differences in stem rust resistance among tall fescue lines never cease to amaze me! #turfbreedingforthefuture