Square Plot (image) American Society of Agronomy Share Print E-Mail Caption At the onset of the experiment, a pesticide sprayer is used to apply blue-dyed water on top of a 39 inch square (1 m by 1 m) soil plot. Credit Genevieve Ali Usage Restrictions Please use with story only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.