Agricultural Policy/Environmental eXtender
|Jimmy Williams||Hydraulic Engineer||TAES||(254) 774-6124|
|Avery Meinardus||Computer Assistant||TAES||(254) 774-6110|
To provide a tool for managing whole farms or small watersheds to obtain maximum production efficiency and maintain environmental quality.
- Erosion(water and wind)
- N and P cycling
- Pesticide fate
- Soil temperature,
- Plant growth
- Plant environmental control
- Overland flow
- Flood plains
MODEL OPERATIONFarm or watershed may be divided into several (<100)subareas or fields Daily time step - long term simulations (1-4000 yrs) Soil, weather, tillage and crop parameter data supplied with model Soil profile can be divided into thirty layers Homogeneous subareas Weather generation is optional
MANAGEMENT CAPABILITIESWhole farm - - routing allows evaluation of interactions between fields (surface run-on, sediment deposition and degradation, nutrient and pesticide transport, and subsurface flow).
Examples: terrace systems, grass waterways, strip cropping, buffer strips, crop rotations, fertilizer, irrigation, liming, furrow diking, drainage, waste management (feed yards, dairies with or without lagoons)