2021 eUpdate Archive


April 2021

849  April 8th, 2021    

Pre-emergence herbicides for grain sorghum grain sorghum weed control pre-emergence residual herbicides 
First hollow stem update: April 8, 2021 wheat dual purpose grazing first hollow stem 
Key nutrients for soybean production in Kansas soybeans soil fertility nutrients 
Kansas Mesonet adds a new tool for tracking days between rainfall events weather Mesonet rainfall tool drought monitoring 
Insect activity report for Kansas - Alfalfa weevils and pea aphids insects pea aphids alfalfa weevils 
Kansas Ag-Climate Update for March 2021 weather Climate March 
Commercial applicator training offered in April application training virtual pesticides 

848  April 1st, 2021    

Soil temperature and moisture update in Kansas - April 1, 2021 soil moisture spring planting soil temperature 
First hollow stem update: April 1, 2021 wheat dual purpose first hollow stem 
What are the causes of yellow wheat? wheat disease yellow wheat nutrient deficiency 
Spring-emerged volunteer wheat: Should producers worry about wheat streak mosaic virus and the green bridge? wheat volunteer wheat wheat streak mosaic 
A classic March wind storm in Kansas weather wind 
Spring soybean cyst nematode sampling soil sampling soybean cyst nematode Plant Disease Diagnostic Lab 
Spring insect activity in Kansas - Alfalfa weevils and army cutworms insects army cutworms alfalfa weevils 
Commercial applicator training offered in April application training online resources pesticides 

March 2021

847  March 26th, 2021    

First hollow stem update: March 26, 2021 dual purpose wheat first hollow stem crop development 

846  March 25th, 2021    

Update on Kansas wheat 2021: A tale of two crops wheat development crop progress 
Outlook for stripe rust in the 2021 Kansas wheat crop wheat disease stripe rust 
World of Weeds - Giant ragweed World of Weeds horseweed giant ragweed 
Join the CoCoRaHS Network...because every drop counts! weather CoCoRaHS 

845  March 23rd, 2021    

First hollow stem update: March 23, 2021 wheat dual purpose first hollow stem 

844  March 18th, 2021    

Residual herbicides for corn corn weed control pre-emergence residual herbicides 
First hollow stem update: March 18, 2021 wheat first hollow stem  
New Kansas Mesonet tool for estimating wheat growth stage wheat Mesonet GDD tool growing degree days 
Optimal corn seeding rate recommendations corn seeding rate plant density plant population yield environment 
2021 Grain sorghum management publication now available grain sorghum publication  

843  March 11th, 2021    

Pay attention to growth stage for spring herbicide decisions on wheat wheat spring herbicide herbicide timing 
Be aware of fire weather conditions during prescribed burning season prescribed burning wildfire fire weather 
Topdressing wheat with sulfur wheat topdress spring fertilizer sulfur 
Chloride as a topdressing nutrient for wheat wheat topdress chloride spring fertilizer 
Be patient as spring planting approaches: Soil temperature and moisture update spring planting planting soil temperature soil moisture optimum planting dates 
Understanding herbicide modes of action publication herbicide weed control  

842  March 4th, 2021    

Optimal time to remove cattle from wheat pastures: First hollow stem wheat grazing dual purpose first hollow stem 
Foxtail infestations in smooth bromegrass hay meadows bromegrass foxtails hay fields 
Kansas Ag-Climate Update for February 2021 weather Climate  
Virtual Crop Talk webinars to end on March 9 virtual webinars  

February 2021

841  February 25th, 2021    

Marestail in soybeans: Strategies for the best control soybeans weed control pre-plant herbicide marestail post-emergence 
World of Weeds - Foxtails World of Weeds annual weeds foxtails 
2020 Kansas Performance Tests with Grain Sorghum Hybrids grain sorghum Performance Tests  
Soil versus air temperatures: Understanding the relationship soil soil moisture soil temperature crop residue freezing temperatures 
Herbicide application practices in Kansas survey herbicide 
Crop Talk webinar series for northwest and north central Kansas virtual webinars  

840  February 18th, 2021    

Potential for winterkill to the Kansas wheat crop wheat winter hardiness winter survival cold temperatures 
Expectations for a late-emerged winter wheat crop wheat dry soils Drought delayed emergence yield potential 
Factors involved in winter survival of canola in Kansas canola winter hardiness winter survival cold temperatures 
Late winter kochia control in fields going to soybeans, sunflowers, and wheat weed control kochia herbicide pre-emergence 
Soil temperature impacts on western corn rootworm eggs insects soil temperature corn rootworm 
2020 Kansas Performance Tests with soybean varieties report Performance Tests soybeans  
Herbicide application practices in Kansas survey herbicide herbicide application 
Soybean seedling diseases webinar series to begin on Feb. 23 soybeans virtual leaf diseases webinars  
Great Plains Cotton Conference, February 23 & 24 Conference cotton virtual  
Crop Talk webinar series for northwest and north central Kansas virtual webinars  

839  February 15th, 2021    

Measuring the Arctic outbreak on the Mesonet Mesonet freeze monitor arctic weather 
Safety guidelines for frozen ponds safety ice frozen ponds 

838  February 11th, 2021    

Late winter kochia control in fields going to corn or grain sorghum weed control kochia pre-emergence 
Cover crop termination considerations weeds cover crops herbicide termination 
2020 Kansas Performance Tests with Corn Hybrids report now available  corn Performance Tests hybrid  
Save the Date - Great Plains Cotton Conference, February 23 & 24 Conference cotton virtual  
New Crop Talk webinar series for northwest and north central Kansas virtual  

837  February 4th, 2021    

Topdressing wheat with nitrogen wheat topdress fertilizer nitrogen 
Is spring wheat a viable option for northwest Kansas? spring wheat cool-season grain 
Topdressing canola: How to maximize the benefits canola topdress 
Pre-plant herbicide applications for kochia control  weed control kochia pre-plant herbicide 
Metabolism-based herbicide resistance in a 6-way resistant Palmer amaranth palmer amaranth herbicide resistance 
Arctic weather is coming - Monitor livestock conditions using Cattle Comfort Tool Mesonet Cattle Comfort Tool cold temperatures 
Kansas Ag-Climate Update for January 2021 weather Climate 
Save the Date - Great Plains Cotton Conference, February 23 & 24 Conference cotton virtual  
Soybean cyst nematode webinar series starting February 11 soybean cyst nematode virtual webinars 
New Crop Talk webinar series for northwest and north central Kansas virtual webinars  

January 2021

836  January 28th, 2021    

Kansas winter wheat disease summary for 2020 wheat disease summary  
Updated 2021 spring wildfire outlook for Kansas wildfire outlook 
New Crop Talk webinar series for northwest and north central Kansas virtual webinars  
2021 Kansas Corn School webinar series - Feb. 4 and 11 Corn Schools virtual  

835  January 21st, 2021    

Sunflower disease management in Kansas sunflower disease management 
2021 wheat variety fall forage yield comparison wheat fall forage dual purpose variety trials 
Emergency measures to control wind erosion soil conservation high winds wind erosion soil loss 
World of Weeds: Marestail World of Weeds marestail horseweed 
2021 Kansas Corn School webinar series - Feb. 4 and 11 Corn Schools virtual  
North Central Experiment Field Winter Update - January 27 virtual experiment field North Central 

834  January 14th, 2021    

Extension Weed Science launches a new podcast on battling weeds weed control podcast War on Weeds 
Summer row crop disease summary for Kansas in 2020 soybeans sorghum corn summary row crops diseases  
Look back at Kansas weather for each month of 2020 weather summary  
Two new soybean publications are available online soybeans publication  
2021 Kansas Corn School webinar series Corn Schools virtual  
North Central Experiment Field Winter Update - January 27 virtual meeting experiment field 
Cover Your Acres Winter Conference goes virtual on January 19 Cover Your Acres virtual  

833  January 7th, 2021    

Extension Agronomy eUpdate moves to Thursday eUpdate 
IMIFLEX herbicide receives EPA approval for igrowth grain sorghum grain sorghum weed control herbicide resistance IMIFLEX 
Using game theory to understand social aspects of weed management decisions soybeans dicamba weed management 
2021 Kansas training information for paraquat and dicamba dicamba paraquat application training  
2020 Kansas severe weather: One for the record books severe weather  
Kansas Ag-Climate Update for December 2020 weather Climate 
2021 Kansas Corn School webinar series Corn Schools virtual  
North Central Experiment Field Winter Update - January 27 Update  
Cover Your Acres Winter Conference goes virtual, January 19 Cover Your Acres virtual  


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