OpenAGRICOLA
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- water pollution[remove]2
- agricultural watersheds1
- costs and returns1
- erosion control1
- income1
- lakes1
- nonpoint source pollution1
- phosphorus1
- pollution load1
- rivers1
- seasonal variation1
- sediment contamination1
- soil conservation1
- soil erosion1
- temporal variation1
- time series analysis1
- total suspended solids1
- water quality1