OpenAGRICOLA
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- agricultural runoff[remove]55
- application rate[remove]55
- phosphorus34
- water pollution25
- losses from soil24
- AgSpace19
- poultry manure19
- water quality17
- nitrogen16
- fertilizer application15
- soil amendments13
- agricultural soils11
- nitrate nitrogen11
- surface water10
- leaching8
- rainfall simulation8
- ammonium nitrogen7
- cattle manure7
- corn7
- crop production7