What impact do crop protection and fertilizers have on water quality?

Changes of nitrate concentrations were evaluated in groundwater samples collected from 1,225 wells in 56 well networks across the United States (Lindsey and Rupert, 2012). Of the 56 well networks that were analyzed for changes in nitrate concentrations using the Wilcoxon-Pratt signed-rank test (1959), 13 had statistically significant increases in concentrations of nitrate. Five well networks had statistically significant decreases in concentrations of nitrate.


USFRA Point of View

Insects, weeds and plant diseases are serious threats that can devastate crops. Throughout history, farmers have found ways to manage these threats or see their livelihood – and a lot of food – destroyed. Each year farmers face tough management decisions, especially when it comes to the best route... Read more