Dr. Jason Norsworthy

Distinguished Professor & Elms Farming Chair of Weed Science|University of Arkansas System Division of Agriculture

2024 Abstract - COTTON SESSION - EXPERIENCES WITH THE SEE & SPRAY: PERSPECTIVES FROM A WEED SCIENTIST AND COTTON GROWER: Dr. Jason Norsworthy, weed scientist with the University of Arkansas Systems Division of Agriculture, and David Wildy, cotton farmer in Mississippi County, Arkansas, will discuss their experiences with the See & Spray technology along with pros and cons of using the machine and targeted spray applications. A comparison of the See and Spray Ultimate and See and Spray Premium machines will be presented. The See and Spray Premium was used on more than 8,000 acres of cotton at Wildy Farms in 2023. David will show maps of sprayed fields and the associated spray savings. 2024 Abstract - RICE SESSION - HORIZON AG PROVISIA RICE PANEL: Unified by a commitment to help southern rice farmers manage and steward the Provisia Rice System, university, extension, industry retail, BASF and Horizon Ag representatives met in 2022 to develop Best Management Practices (BMP) to minimize the potential threat of weedy rice outcrosses developing to the ACCase-inhibiting herbicide technology. After the 2023 season, the group met again to analyze results from that effort, and to consider ways to manage new challenges farmers experienced with Provisia rice. By and large, the 2023 growing season was a success for the Provisia Rice System and variety PVL03. Despite PVL03 acreage increasing to almost 30% of the state’s rice plantings, the weedy rice outcrossing issues identified the previous season were significantly reduced, as many farmers adopted BMPs recommended for the system. Those management practices included starting with a clean seed bed, spraying when weeds are small and actively growing, and using recommended residual herbicides. Looking at 2024, the Provisia Rice panel will address key production areas, such as: • Steps in the fall to control weeds and limit early competition • Protect early season plant health with seed treatments and plant nutrition • Seeding rate recommendations • Temperature minimums for optimum herbicide application • Comparing the advantages of three Provisia herbicide application vs. two applications • Proper carrier volumes for ground and aerial applications. • Zero tolerance” for weedy rice and red rice escapes. It will present updated Best Management Practices for Provisia Rice for 2024, with the goal to help make farmers more productive and profitable while effectively stewarding the Provisia Rice System. Those recommendations will include both PVL03 and new PVL04, the first Provisia variety released by the University of Arkansas rice breeding program. 2024 Abstract - ROUNDTABLE SESSION - UTILIZING ROGUE® SC IN HERBICIDE PROGRAMS FOR SUCCESSFUL WEED CONTROL IN SOUTHERN US RICE: This session will concentrate on the utilization of Rogue® SC into successful rice herbicide programs in the Southern US. Rogue® SC is a novel HPPD inhibiting mode of action rice herbicide and the only HPPD inhibiting herbicides used in Southern US rice. Rogue® SC, a pro-herbicide, is active only in floodwater and has no activity when applied to plant foliage or soil. Rogue® SC best management practices developed from research cooperators and on-farm learnings discussed in this session can provide useful insights on herbicide program planning, herbicide application, weed spectrum, and floodwater management. 2024 Abstract - RICE SESSION - NEW, FMC RICE HERBICIDE UPDATE: Update on FMC’s new rice herbicide from university weed scientists from the Mid- south region. In this session, speakers will discuss their findings from studies including the novel herbicide.

Phone: 479-313-1265

Cell Phone:

Address: 1354 West Altheimer Drive

Fayetteville, AR 72704

Email: jnorswor@uark.edu

2024 Conference is Being Updated Daily.

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