Scouting Keys to Better Fungicide Decisions – RealAgriculture

Winter is a good time to recalibrate your method to wheat illness administration and fungicide software.

That’s the message from Penn State University plant pathologist Alyssa Collins, who shared with agronomists attending the Ontario Certified Crop Advisors Annual Meeting earlier this month.

It’s a dormant interval for people and in addition for fungi and crops, says Collins. “So we are able to begin from scratch and look forward to what our yr goes to be like and remind ourselves what our important issues are in a given crop.” It’s additionally a very good time for growers to establish the intervals once they’re actively investigating to allow them to collect the sphere suggestions wanted to make good fungicide choices.

In this episode of RealAgriculture’s Wheat School, Collins shares ideas for growers on how to optimize their scouting method for the upcoming rising season.

The very first thing growers want to ask themselves is once they want a fungicide. “There are many conditions the place fungicides aren’t useful,” says Collins. “If you do not have a fungal illness, you will not get any profit from a fungicide. The wheat crop may also undergo from a fungus that’s unattainable for fungicide therapy. For instance, with root rot, we can not get the fungicide into the world the place it might work.”

On the opposite facet of the coin, Collins says it is also necessary to know when a fungicide can actually assist a crop. She stresses the significance of understanding which fungicides are best on particular illnesses. “This info is available and is up to date yearly. There are instances after we know that the fungal illness is inflicting us sufficient yield or high quality loss that we really get an financial profit from a fungicide.” (The story continues after the video.)

Collins says understanding when the wheat crop is prone to illness additionally helps enhance scouting effectiveness. “For instance, winter wheat makes a lot of its yield within the high leaves and head, so something that assaults has the potential to decrease yield. Also, there are specific illnesses the place the pathogen can not really get into the plant besides at sure instances of the yr. Fusarium head rot is an instance of one thing that may solely get into the plant by the buds, so we all know defending the plant outdoors of this time would not actually assist us.”

It’s additionally necessary to know your fungus and which elements of the plant want essentially the most safety.

“The flag leaf is the solar panel for this plant,” Collins factors out. “It absorbs the solar’s power, turns it into sugar and drives it into your grain. Other actually necessary elements are the grain head itself, which additionally does photosynthesis, and the second leaf from the flag leaf. Knowing that, we are able to goal the issues that we actually need to defend in direction of this facility.”

It’s additionally necessary to keep watch over the decrease leaves: “If we see a illness down there, we all know it is extra probably to migrate to the flag leaf. So early scouting continues to be necessary. But early scouting mixed with extra smart fungicide timing will probably prevent essentially the most cash.”

In the video, Collins focuses on three development intervals to give attention to when scouting: “I’d say Green Up is the primary time you need to be on the market scouting for illnesses. Probably a bit earlier for different agronomic issues, akin to like how good your stand, fertilizer, herbicide and issues like which can be, however it’s inexperienced straight away for illnesses as a result of that is after we begin to see issues like powdery mildew and different leaf illness points.”

As the plant nears boot stage, one other necessary interval for scouting is: “That’s after we begin to see manufacturing of those actually important leaves for wheat,” notes Collins.

The ultimate harvest exploration ought to be reserved for maturation. Collins says this crop view would not help make fungicide choices, however it does provide a glimpse into the long run. “If growers are seeing high quality points like scorch and scorch marks when there may be loads of scab, then it’s best to hold that in thoughts when producing seed or when storing seed for sowing in your farm. They might probably make a fungicide resolution for seed therapy for the subsequent crop.”

Click right here for extra Wheat School episodes.

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