Agronomy eUpdate September 26th, 2025

Issue 1073

Control annual weeds with fall-applied herbicides

Fall-applied herbicides can provide effective control of winter annual weeds, while also helping manage early spring-germinating weeds such as kochia. Learn which herbicides offer both burndown and residual activity, plus considerations for rotation restrictions and weather impacts.

fall-applied weed control herbicides residual herbicides 

Get control of fall-emerged marestail before next spring

Marestail is especially tough in no-till soybean systems, with resistance to glyphosate and ALS herbicides common in Kansas. This article highlights herbicide, tillage, and cover crop strategies for better control. Taking action in the fall or early spring is key to success.

weed control marestail herbicide resistance residual herbicides horseweed 

Planting cereal rye after corn harvest

Cereal rye is a versatile cover crop that fits well into corn-soybean rotations. It helps manage weeds, reduce evaporation, and anchor soil against erosion. Learn the best practices for seeding rates, timing, and herbicide considerations.

cover crops cereal rye 

Harvest aid application decisions in cotton

Harvest aid applications prepare cotton for a cleaner, more efficient harvest. This article outlines timing methods, product options, and results from recent Kansas trials. Proper timing and coverage can help maximize returns.

cotton harvest aid 

Common causes of late-season stalk lodging in corn

Stalk lodging can severely impact yield and harvest efficiency. Learn the most common causes and steps to minimize losses. Evaluating this year's issues can help prevent repeat problems next season.

stalk rot Fusarium disease corn lodging 

Understanding resolution in remote sensing imagery: What farmers need to know

Satellite and drone imagery can help monitor crop health, nutrient status, and pest pressure, but understanding resolution is key. This article explains spatial, spectral, temporal, and radiometric resolution, and how each affects the quality of your decisions.

drones precision agriculture remote sensing 

Fall soil sampling: Sample collection and submission to K-State Soil Testing Lab

Soil testing provides valuable information to guide fertilizer decisions and improve crop production. This article walks through the proper collection, handling, and submission of samples to the K-State Soil Testing Lab. Following best practices ensures accurate results.

soil sampling Soil Testing Lab soil fertility fall soil sampling 

The challenge of collecting a representative soil sample

Collecting soil samples may sound simple, but field variability makes it challenging to get truly representative results. This article explains why composite sampling, consistent depth, and the right pattern are critical for accuracy. Following these practices leads to more reliable fertilizer recommendations.

soil sampling soil fertility 

Join us for the 2025 Cotton Field Day - September 30

The 2025 Cotton Field Day is coming up on September 30. Producers can explore hands-on demonstrations, local research, and discussions on key cotton production topics. Dinner is provided, and RSVPs are requested online.

cotton Field Day 


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