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Start of Flowering Is the Ideal Time for White Mold Management in Soybeans
Some early planted soybeans are starting to flower (R1 growth stage). One soybean disease that needs to be managed at this growth stage is white mold.
Fusarium Crown and Root Rot Observed in Oats
Some oat fields are showing plants wilting with tillers dying prematurely and heads looking bleached. Inspecting the crown and sub-crown area reveals the discoloration and rotting and sometimes a pinkish color can be observed. These are typical symptoms of Fusarium root and crown rot.
Is a Fungicide Applied at Tasseling Profitable in Corn?
Corn is currently at tasseling/silking across the state. This is usually the growth stage when a fungicide is applied to control fungal diseases.
Check Fields for Palmer Amaranth
Palmer amaranth, is an aggressive weed from the pigweed family, which has been reported with increasing frequency in recent years around Central South Dakota.
2019 Soybean Fungicide Field Trials Summary
This document contains results of soybean field trials conducted during the 2019 growing season to evaluate foliar fungicides to manage various soybean diseases.
Planting Spring Wheat Into Corn or Milo Residue: Considerations for Scab
Due to current grain prices and other reasons, growers may be considering planting spring wheat into fields that were planted to corn or milo last season. While this type of crop rotation is not generally recommended, economic and logistical challenges sometimes may dictate otherwise.
2019 Wheat Field Plot Trials Summary: Fungal and Bacterial Disease Trials
This publication provides a summary of wheat trials conducted in 2019 to determine efficacy of various products in managing wheat diseases.
Changes in Pesticide Applicator Certification During COVID-19
April 27, 2020
Due to office closures as a result of COVID-19, commercial pesticide applicator testing is currently unavailable at the SDSU Extension Regional Centers and county offices.
Dealing With Alfalfa Winter Kill
Winter kill and general stand loss of alfalfa has specifically been of concern in many parts of South Dakota the last two years. Most observed alfalfa winter kill is due to low, wet or flooded areas where plants were suffocated and died over the winter.
Temperature and Herbicide Performance
In South Dakota, the spring can come with a wide range of temperature fluctuations. This will affect the performance of burndown herbicides. Depending upon the target weed, type of herbicide and application rate, there will likely be decreased weed control in cooler temperatures.