Planning for Soybean Fungicide Application Success

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A successful soybean growing season and harvest starts with planning, and that includes fungicide applications.

Planning ahead for fungicide applications starts with yield goals. Every field will have differing capabilities and challenges such as levels of disease pressure due to management and tillage practices, and field history.

“Another reason to plan fungicide applications is that Mother Nature doesn’t always give us what we want,” said Dr. Joshua Miller, BASF Technical Marketing Manager. “Environmental stresses can have an impact on your plant, and ultimately affect yield. If we plan before the season starts to apply Priaxor® fungicide to capture those benefits, then we can ensure we’re maximizing the potential of every acre.”BASF

A fungicide application is typically the last application that a grower makes in the field and the last dollars spent in the field on the acre. If they haven’t planned ahead, it’s very easy for the grower to decide not to apply as they’ve already made most of their purchasing decisions for the year. However, farm trials have shown that 92% of the time growers will experience a positive yield response to a Priaxorapplication, which means that the decision to not apply may have cost the grower yield and profit.

Considerations When Planning Fungicide Application

When planning ahead for a fungicide application, growers should target fields that will respond best due to yield potential and past experience.

“Another consideration is to target applications to fields with high-end yield potential. Growers have planted their best varieties at the right time on these acres; their fertility is correct on those fields,” Miller said. “They're set up for success, and adding Priaxor or Headline AMP to those acres maximizes their yield potential even more; it’s pushing it to a higher level.”

To plan for the uncertainty of weather, consider two factors related to plant health: growth efficiency and stress tolerance. With Priaxor, given the same amount of sunlight, the plant will conduct photosynthesis more efficiently at a higher rate, which ultimately will give you the byproducts that create yield. Thus, growth efficiency means the unique ability to increase the photosynthetic efficiency within the plant.

Ethylene is a hormone in the plant that is produced when a plant undergoes stress, like heat, cold or water stress. Applying Priaxor prevents ethylene production when the plant is under stress, which helps the plant hold more leaves, prevent pod drop and prevent flower abortion.

“Using Priaxor on your soybean plant helps to proactively mitigate stress better than if you left it untreated or applied another product due to its unique properties,” he said.

When to Begin Planning?

“Seeing is believing when you’re in the combine and the yield bumps up when you go over the test strip put out the year prior,” said Miller. “When the team – the grower, retailer and BASF Innovation Specialist – are preplanning before the end of the growing season, it’s important for all parties involved to revisit how applying a product like Priaxor may have impacted yield.

To learn more about Priaxor fungicide from BASF, visit

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