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Tag Archives: disease

FMC launches at-plant corn fungicide

fmc logo

FMC has laucnhed Xyway 3D fungicide, the first at-plant corn fungicide to provide season-long disease protection. It combines the triazole fungicide, flutriafol, with unique at-plant flexibility, according to a company news release. When soil-applied, the active ingredient is rapidly taken up by plant roots and is quickly translocated throughout the plant before diseases emerge, providing early, systemic and long-lasting residual ... Read More »

Southern rust of corn makes season’s first appearance in Arkansas

IPM map

• By Travis Faske and Terry Spurlock • Southern rust was detected last week (July 6) in Arkansas, Jefferson, and Lincoln counties, Arkansas. Disease incidence and severity was low (one leaf on two plants with 30-40 pustules/leaf; Fig. 2) on corn at blister to milk growth stage (R2-R3). The timing is about right for southern rust — for the past ... Read More »

Investigating a rapid decline in North Florida corn fields

fusarium root rot

• By De Broughton, Ian Small and Fanny Iriarte • What are the symptoms? In recent weeks, extension agents in various locations across North Florida (primarily in the Northeast) have received calls from growers and consultants about symptoms of rapid decline in corn. Symptoms observed include leaf blight and in general, a wilted, scalded appearance of foliage still in the ... Read More »

Scout and correctly ID diseases to aid management

southern rust

• By Heather Marie Kelly • Relatively low disease has been observed in Tennessee so far. The warmer winters most areas had may have allowed survival of disease inoculum and paired with storms coming from the south could result in more disease development this season. So scouting and correctly identifying diseases are important. Whether a disease will develop and cause ... Read More »

UK study shows tasseling fungicide applications may offer greatest benefits

gray leaf spot

Corn producers have the greatest chance of controlling foliar diseases and improving the crop’s stalk strength when foliar fungicide treatments are applied at the tasseling (VT) growth stage, according to a University of Kentucky study. “Foliar diseases like gray leaf spot and southern rust frequently appear after tasseling and into grain fill. This prompts farmers and agribusiness personnel to ask ... Read More »

Biodegradable Spray Helps Battle Crop Pathogens

aflatoxin control

A new sprayable bioplastic — made of cornstarch and other natural ingredients — offers a potentially effective method for delivering beneficial microbes to fight aflatoxin and other agricultural pathogens and pests. Aflatoxin is a highly toxic substance produced by many species of Aspergillus fungi. Annual losses are estimated at more than $200 million for corn. The U.S. Food and Drug ... Read More »

Hot off the press: Arkansas’ MP weed, insect and disease guides

arkansas MP guides

The 2020 versions of the University of Arkansas System Division of Agriculture publications on managing insects, weeds and plant diseases are now available online, through Cooperative Extension Service offices across the state, and, in one case, as a mobile-friendly website. MP44, “Recommended Chemicals for Weed and Brush Control”; MP144, “Insecticide Recommendations for Arkansas”; and MP154, the “Arkansas Plant Disease Control ... Read More »

New tool provides producers with impacts of diseases

southern rust

Kentucky grain producers have a new, free tool at their disposal to see the past yield losses and economic impacts of common diseases affecting corn and soybeans. This tool can help them plan their disease management strategy for the upcoming growing season. Developed by the Crop Protection Network, the Field Crop Disease Loss Calculator can tell producers how much in ... Read More »

Multi-state study examines how cover crops termination affects plant pests

alison robertson

A multi-state experiment that recently received a major grant will examine how planting cover crops on farm fields affects plant disease, pests and weeds. Alison Robertson, a professor of plant pathology and microbiology at Iowa State University, will lead a portion of the experiments as part of a much larger project awarded a $10 million grant from the U.S. Department ... Read More »

Southern Rust Confirmed In Tennessee

Southern rust

• By Heather Marie Kelly • This week I received the first sample of southern rust in corn from Martin, Tennessee (Weakley County). Not surprisingly after the storms of Barry, more counties along the Mississippi river have confirmed southern rust (Image 1. Confirmed reports of southern rust can be found at https://corn.ipmpipe.org/southerncornrust/). The majority of corn in Tennessee is past ... Read More »