News & Podcasts

Key points pulled from the episode

• ▸Hybrid rice is more susceptible to Loyant injury than inbred varieties.
• ▸Sequential applications of Loyant increase the risk of crop damage.
• ▸Environmental factors like temperature and soil moisture affect herbicide efficacy.
• ▸Glyphosate is ineffective against yellow nutsedge; alternative strategies are needed.

Key points pulled from the episode

• ▸Cotton acreage in Arkansas may decrease to under 500,000 acres this year.
• ▸Farmers are expected to plant up to 95% Xtend cotton, reflecting a shift in technology use.
• ▸Starting clean with effective residuals is crucial to manage resistant weed populations.
• ▸Mixing two residual herbicides is recommended for better control of pigweed and grasses.

Key points pulled from the episode

• ▸Phosphorus should be applied as close to planting as possible for optimal uptake.
• ▸Potassium has a wider application window and can be applied later in the growth cycle.
• ▸Zinc seed treatments are effective in marginal deficiency scenarios but require careful consideration of soil tests.
• ▸Starter fertilizers can help in cold, wet conditions but may not always lead to significant yield increases.

Key points pulled from the episode

• ▸Palmer amaranth is the primary weed concern in Arkansas soybean production.
• ▸Resistance to multiple herbicide sites of action is widespread, complicating control efforts.
• ▸Metribuzin remains a critical pre-emergence herbicide with no confirmed resistance yet.
• ▸Dicamba regulations are currently under review, creating uncertainty for farmers.

Key points pulled from the episode

• ▸Ryegrass is highly resistant to multiple herbicide modes of action, making it a poor choice for cover cropping.
• ▸Cereal rye is recommended over ryegrass for its effectiveness in weed suppression and biomass production.
• ▸Legume cover crops can release nitrogen but may stimulate weed emergence if not managed properly.
• ▸Timing of cover crop termination is crucial for effective weed control and crop yield.

Key points pulled from the episode

• ▸Insecticide seed treatments for rice can increase yields by 12-14%.
• ▸Soybean seed treatments show a consistent 2-bushel yield advantage.
• ▸Pests targeted include grape colaspis, rice water weevil, and bean leaf beetles.
• ▸Combination treatments provide better pest control and yield outcomes.

Key points pulled from the episode

• ▸Clethodim has a 30-day replant interval for corn and grain sorghum.
• ▸Metribusin carryover may allow for planting grain sorghum with minimal injury if applied correctly.
• ▸Timely herbicide applications are crucial for effective weed control in corn.
• ▸Corn is easier to manage for weed control compared to other crops, but timing is key.

Key points pulled from the episode

• ▸Standard seeding rates for rice are 30 seeds/sq ft on silt loam soils.
• ▸Adjustments are recommended based on soil type, planting method, and conditions.
• ▸Newer planting technologies may reduce the need for higher seeding rates.
• ▸Higher seeding rates can increase yield but may not improve net returns significantly.

Key points pulled from the episode

• ▸Barnyard grass is the most problematic weed for Arkansas rice, causing significant yield losses.
• ▸Using multiple effective residual herbicides is critical for controlling barnyard grass early.
• ▸Command and Quinclorac are recommended for effective barnyard grass management.
• ▸Overlapping residual applications every 14 days is essential for maintaining weed control.

Key points pulled from the episode

• ▸Barnyard grass resistance to propanil and quinchlorac exceeds 50%.
• ▸ALS-resistant barnyard grass is present in about 40% of samples tested.
• ▸Sedges like yellow nutsedge and rice flatsedge are also developing resistance.
• ▸Weedy rice shows a 95% resistance rate to ALS herbicides.

Key points pulled from the episode

• ▸Glufosinate-resistant Palmer amaranth confirmed in limited areas of Arkansas.
• ▸Key management strategies include starting clean and using multiple residual herbicides.
• ▸Timely post-emergence applications are critical for effective pigweed control.
• ▸Rotating herbicide modes of action helps reduce resistance pressure.

Key points pulled from the episode

• ▸Rising temperatures above 55°F are critical for herbicide effectiveness.
• ▸Tank mixes of 2,4-D and glyphosate are economical for winter annual broadleaf weeds.
• ▸Resistance to ALS inhibitors in ryegrass is a growing concern in Arkansas.
• ▸Paraquat may be necessary for effective ryegrass control, often requiring two applications.