what happens if agricultural wastes are passed in water?what is the process called

Dear student, 
​Please find below the solution to the asked query        

Agricultural waste refers to waste which comes out of an agricultural field. E.g. grass cuttings, weeds, hedge trimmings, empty pesticides containers, pesticides, weedicides etc.
If such waste is released in the water, the water gets polluted and the consequence would be water pollution.

Please be more specific about the process you are asking for.
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Hope this information will clear your doubts about the topic.    Regards