Based mostly on Purdue Area Crops Illness Specialist Darcy Telenko, It is rather important proceed to scout for illnesses in each corn and soybeans Inside The approaching days and weeks.
Current rains Throughout the state have created favorable environmental circumstances for The event of foliar illnesses in each crops. Grey leaf spot, northern corn leaf blight, and tar spot in corn and frogeye leaf spot, downy mildew and Septoria brown spot in soybeans have all been confirmed In a quantity of areas of the state.
Telenko states that In all probability the most frequent question she receives is, “Ought to we make a fungicide software?” The reply: What illnesses are you discovering in your field? What’s your hybrid/selection susceptibility and field historic previous? What progress stage are the crops? Are you irrigating?
A fungicide software Might be influenceive at reducing disease and defending yield, however There are a Choice Of issues that farmers Want To imagine about: The sector historic previous/earlier crop, The quantity of disease current Inside The sector, hybrid/selection susceptibility, climate circumstances, The worth of the crop, And worth of fungicide software.
One disease That is on people’s thoughts, As a Outcome of of its relative newness to Indian,a is corn tar spot. It was first confirmed in Indiana in 2015, with little influence on corn yield. In 2018 however, an epidemic occurred that did Finish in yield discount northern Indiana and surrounding states.
For 2021, new counties the place lively tar spot lesions have been found proceed to be added to the Purdue database every week, with the northern An factor of the state presently having The Most very important hazard.
Pathologists are working exhausting To know this new disease To attenuate losses. The good information is that Pretty A pair of fungicides have been found That are extremely efficacious in the direction of tar spot when well timed softwares are made.
For An inventory of useful merchandise and timing ideas, the Crop Safety Community homes An excellent publication at https://bit.ly/2VmCnYP.
For information on tar spot, collectively with assist with identification, The subsequent publication Might be very useful: https://bit.ly/3yikA3v.
Andrew Westfall is director of Purdue Extension White County (Ind.).