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Sorghum Is in the Ground. Here's How South Texas Producers Are Using John Deere Sprayers to Stay Ahead of Early Weeds
Many South Texas farmers have acres of sorghum planted, but getting that crop to yield requires eliminating the competition immediately: weeds. Grain sorghum is a notoriously weak early competitor against weeds due to slow growth and poor early vigor during the first month of growth. That narrow window before the crop closes canopy is where yield is won or lost. In South Texas's semi-arid coastal environment, the stakes are even higher. Weeds aren't just competing for light; they're competing for the limited soil moisture and nutrients that the sorghum needs most in early vegetative stages. Winning the weed battle this season takes more than chemistry — it takes equipment built for precision. Here's how John Deere's sprayer technology gives South Texas producers the edge, and how King Ranch Ag & Turf can help you put it to work.
Learn More About Integrated Solutions
How John Deere Sprayers Target Weeds
See & Spray™
See & Spray takes the guesswork out of weed control. AI-powered cameras mounted on the boom scan the field in real time, distinguishing weeds from crop at up to 15 mph and covering more than 2,100 square feet per second. When a weed is identified, onboard processors trigger individual ExactApply™ nozzles to apply a precise dose of herbicide right where it's needed, leaving the rest of the field untouched. That level of targeting means you're not waiting for a full-field weed pressure threshold before you spray. Instead, you're addressing problems as they emerge, in-season, without the cost of a broadcast pass across clean acres. The savings add up fast. Producers using See & Spray have cut herbicide spend by up to 60%, which is good for the budget and good for the land. Reduced volume and targeted placement also slow the development of weed resistance over time — a growing concern in South Texas fields that have seen repeated chemical exposure. Rather than blanket applications, you're putting the right chemical in the right place, which is exactly how integrated weed management is supposed to work.
See & Spray's in-crop benefits currently apply to corn, soybean, cotton, and fallow fields, making it a natural fit for diversified operations across the Coastal Bend.
ExactApply™
If you're not in the market for a new sprayer but want more precision from what you've already got, ExactApply is worth a close look. It's a John Deere nozzle system that uses pulse-width modulation technology to give you individual control over every nozzle on the boom — no skips, no overlaps, no wasted product near field borders or waterways.
What sets it apart is consistency. Most sprayers lose droplet size accuracy as speed changes. ExactApply runs at up to three times the pulsing frequency of competing systems and holds your target rate and pressure across a wider speed range. It also handles turn compensation automatically, adjusting application rates as the sprayer navigates headlands so boom-end nozzles don't over-apply while you're coming around. For South Texas fields with irregular boundaries, that matters.
The result is 2 to 5% savings in chemical use through precision alone, and in a season where inputs are a real line item, that adds up across a lot of acres.
ExactApply is available factory-installed on John Deere 400 and 600 Series sprayers.
How to Manage the Sorghum Weed Window
Knowing the tools is one thing. Knowing when and how to use them is what protects your yield. Here's a three-phase approach that takes you from pre-plant through canopy closure.
Phase 1: Start Fresh
Before seed goes in the ground, get the field clean. Grain sorghum works well in no-till systems, and a good burndown — whether that's glyphosate, a residual herbicide, or a combination — sets up everything that follows. For fields with heavy residue or tough broadleaf pressure, deep tillage before planting can physically disrupt the weed seedbank and give your pre-emergent a stronger foundation to work from. John Deere's R4-Series and 400/600 Series self-propelled sprayers are built to cover South Texas's large dryland acres quickly and efficiently, so you're not losing planting window chasing down weeds.
Phase 2: Pre-Emergence Application
Timing is tight here. Pre-emergent herbicides like atrazine, pendimethalin, acetochlor, and trifluralin need to be down before weeds break the surface, ideally at or shortly after planting. In South Texas's drier conditions, activation depends heavily on rainfall timing, so your application window and the forecast need to line up.
ExactApply's consistent coverage across the full boom length means a single pass does the job right — no gaps that give early-emerging weeds a foothold.
Phase 3: Targeted Rescue Treatment
Even the best pre-emergence program can have weed escapes. What matters is how fast you respond. Yield penalties from weed competition start accumulating quickly after emergence, so sitting on weed escapes isn't an option.
See & Spray lets you make a targeted pass over problem areas without treating the whole field. You're applying chemistry where you have a problem — not paying for a broadcast pass across acres that are already clean.
The sorghum weed window doesn't wait. Producers who get ahead of it protect more yield per acre than any other single management decision. King Ranch Ag & Turf's South Texas locations carry John Deere's full sprayer lineup, including See & Spray-equipped models and ExactApply upgrade kits. Our team understands the Coastal Bend growing season and can help you match the right equipment to your acres and your weed pressure.
FAQ: How South Texas Producers Are Using John Deere Sprayers
Why is weed control so important for grain sorghum in South Texas?
Grain sorghum is one of the weakest early competitors against weeds. It establishes slowly and lacks vigor during the first month of growth — which is exactly when weeds are most aggressive. In South
Texas's semi-arid coastal climate, the problem compounds: weeds compete directly for limited soil moisture and nutrients, not just sunlight. Producers who lose that early weed window can see significant yield loss before the crop ever has a chance to close canopy.
What is John Deere See & Spray technology and how does it work?
John Deere See & Spray uses AI-powered cameras mounted on the sprayer boom to distinguish weeds from crops in real time. The cameras scan more than 2,100 square feet of crop per second at speeds up to 15 mph. When the system identifies a weed, onboard processors trigger individual ExactApply™ nozzles to deliver a precise dose of herbicide — only where the weed is detected. The rest of the field goes untreated, reducing input costs and minimizing unnecessary chemical exposure.
Does John Deere See & Spray work during the growing season?
Yes. See & Spray is designed for in-season use, allowing producers to make targeted weed control passes while the crop is actively growing — without waiting for a full-field weed pressure threshold to justify a broadcast application. Current in-crop compatibility includes corn, soybean, cotton, and fallow fields, making it a strong fit for diversified operations across the Coastal Bend.
Where can South Texas producers find John Deere sprayers equipped with See & Spray or ExactApply?
King Ranch Ag & Turf's South Texas locations carry John Deere's full sprayer lineup, including See & Spray-equipped models and ExactApply precision upgrade kits. Their team is familiar with the Coastal Bend growing season and can help match the right equipment to your operation's acreage and weed pressure profile. Find Your Nearest Location to get in touch.
