Optical Sensing Helps Farmers Reduce Weed Control Costs

New spraying technology allows for more targeted and efficient weed management.

Apr. 18, 2026 at 8:25am

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A highly structured abstract painting featuring sweeping geometric arcs, concentric circles, and precise botanical spirals in earthy tones, conceptually representing the complex interplay of optical sensors, herbicide sprayers, and weed growth patterns in precision agriculture.Innovative spraying technology empowers farmers to precisely target weeds, reducing costs and improving sustainability.Pendleton Today

Agronomist Erin Hightower explains how optical sensing and spot spraying can help farmers like Jason Hill and his father Fritz in Pendleton, Oregon, reduce the costs of controlling weeds like Russian thistle in their wheat and canola fields. The technology allows for more targeted and efficient weed management compared to traditional broadcast spraying.

Why it matters

Weed control is a major challenge and expense for many farmers, especially as herbicide-resistant weeds become more prevalent. Optical sensing and spot spraying offer a more precise and cost-effective solution that can help improve a farm's agronomy and bottom line.

The details

Optical sensing technology allows farmers to detect the presence and location of weeds in their fields. This enables them to only spray herbicide on the areas that need it, rather than doing a blanket application across the entire field. Jason Hill and his father have been using this technology to target Russian thistle and other weeds on their 3,500-acre wheat and canola operation, reducing their weed control costs by $132 per acre.

  • Agronomist Erin Hightower discussed the benefits of optical sensing and spot spraying in April 2026.

The players

Erin Hightower

An agronomist who has been promoting the use of optical sensing and spot spraying technology to improve weed management for farmers.

Jason Hill

A farmer in Pendleton, Oregon who has been using optical sensing and spot spraying to control weeds like Russian thistle on his 3,500-acre wheat and canola operation.

Fritz Hill

Jason Hill's father, who has been working with him to fight weeds on their family farm in Pendleton, Oregon.

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What they’re saying

“While we can't predict the weather, pests' activity, or the price to reduce their strain on next year's crop, we can unlock spraying technology to improve any operation's agronomy.”

— Erin Hightower, Agronomist

What’s next

Farmers interested in adopting optical sensing and spot spraying technology should consult with their local agronomist or equipment dealer to learn more about the available systems and how they can be implemented on their operations.

The takeaway

Precision agriculture technologies like optical sensing and targeted spraying can help farmers significantly reduce their weed control costs while also improving the efficiency and sustainability of their operations.