Implementing Best Management Practices (BMPs) in Corn Production to Protect Water Quality.

P.Troy^* and J. Love

Suwannee Valley Agricultural Extension Center, 7580 CR 136, Live Oak, FL 32060. ptroy@ufl.edu 386/362-1725 x 112

Driven by the proposed 2016 adoption of the Basin Management Action Plan (BMAP) for the Suwannee River Basin, strong emphasis is being placed on irrigation and nutrient management in the area. Farmers are encouraged by the Florida Department of Consumer Services (FDACS) to enroll in Best Management Practices (BMPs) to conseve water and reduce nitrate leaching (DEP 2016). Using 12 advanced corn hybrids varieties in a RCBD, 8 BMPs were implemented in Live Oak to demonstrate their efficacy. The practices included covercropping, soil sampling, poultry litter applications, crop nutrient budgeting, soil moisture sensor installation, ear leaf tissue sampling, side dress fertilizer application, and pivot nozzel upgrade/calibration (via Mobile Irrigation Lab).

We harvested an average of 220 bushes per acre with applied nitrogen inputs of 246 lbs to acheive an efficiency ratio of 89% (compared typical ratios of 60-70%). Such a trial proves high yields are possible while minimizing the risk to leaching. Additonally, water savings of approximately 8% were recored through close monitoring of volumentric water content at various soil depths with a Sentek TDR probe. Full implementation of these practices could reduce inputs by approximately $95/acre. With encouraging results, UF/IFAS will expand this demonstration to neighboring farms, so as to document both high yields and nutrient savings (from leaching and expense). Quantifying the economics and environmental services now will encourage early adoption and greater financial success.

Poster link: https://www.slideshare.net/PatrickTroy3/implementing-bmps-in-corn