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- AgSpace[remove]4
- Zea mays[remove]4
- corn4
- drainage water4
- losses from soil4
- nitrate nitrogen4
- simulation models4
- subsurface drainage[remove]4
- Glycine max3
- fertilizer application3
- nitrogen fertilizers3
- soybeans3
- Root Zone Water Quality Model2
- fertilizer rates2
- leaching2
- nitrogen2
- water pollution2
- Triticum aestivum1
- agricultural management models1
- agricultural soils1