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2018 Field Plot Summaries for Oat and Sorghum Foliar Disease Management Trials

An oat crown rust integrated management trial and a sorghum foliar fungicide trials were conducted to determine the efficacy of fungicides to manage crown rust and fungal diseases in oat and sorghum respectively. Crown rust is one of the most devastating diseases of oat in the state. Stragego fungicide was applied at three different timings to determine the most effective timing for crown rust management. For sorghum, the study investigated the efficacy of two different rates of Nexicor for managing sorghum foliar diseases. The oat field experiment was maintained at Northeast Research Farm (NERF), Southeast research farm (SERF) and Volga research farm. The sorghum experiment was at Volga.

corn field with sunrise in the background

2018 Field Plot Summaries for Corn: Fungicide Trials

This document contains results of corn field trials conducted during the 2018 growing season to evaluate foliar fungicides to manage various corn diseases.

Fungicide Resistance: Risk and Management

What is fungicide resistance?
Fungicide resistance can be defined as when a pathogen population is no longer sensitive or has reduced sensitivity to the fungicide that used to control the same pathogen.

A middle portion of a corn leaf enlarged to show tan-brownish lesions with dark brown wavy margins.

Bacterial Leaf Streak of Corn: A New Corn Disease in South Dakota

Bacterial leaf streak, caused by Xanthomonas vasicola pv. vasculorum (Xvv), is a recently discovered disease of corn in South Dakota. The disease was first identified in Nebraska in 2016 but now has been found in the majority of the Corn Belt states. Under favorable weather conditions bacterial leaf streak can develop to reach yield reducing levels. Like any other bacterial disease, once symptoms develop there is little that can be done to control it in the field. However, it is important to correctly diagnose this as a bacterial disease because it can be confused with gray leaf spot which is a fungal disease.

Wheat blade exhibiting brown, crusting strip rust pustules running laterally throughout the blade.

Wheat Diseases Identification Pocket Guide

Accurate plant disease identification is the first step in designing effective and sustainable disease management programs. The purpose of this guide is to provide information on how to recognize wheat diseases and also to provide possible management options.

Tan Spot of Wheat

Tan spot is a devastating disease of wheat in South Dakota and the rest of the wheat producing regions world over. It causes an estimated yield loss of about 5 percent in South Dakota but this loss can go up to 30 percent in individual fields.

fruit and vegetable garden with raised beds

Growing Sweet Corn in South Dakota

Sweet corn is a delicious vegetable enjoyed by both kids and adults. It is popular in the mid-to-late summer and is often bought at stands on street corners and grocery stores throughout small towns in South Dakota. What many people don’t know, however, is that sweet corn is a remarkably easy vegetable to grow yourself. All you need are a few essential materials and some basic knowledge to grow your own delicious sweet corn.