[word=management] [□=□] □
[word=management] [word=□] □
[word=management] [tag=□] □
" This means that on both sides of the Rio Grande , irrigation districts must line their larger canals , substitute small canals with pipe systems , and on-farm irrigation has to be improved by replacing ditches with flexible plastic pipes , often called poly pipe , and improve water management practices to reduce runoff and deep percolation . Their research has helped establish management practices to reduce plant-related losses . Water Quality - Improved field and watershed management practices to reduce chemical concentrations in surface runoff .