Lawn Irrigation & Fertilization Trends (image) Cary Institute of Ecosystem Studies Caption While there were some exceptions, irrigation practices were largely driven by climate, while fertilization was more dependent on socio-economic status. Credit Matt Howe (irrigation), Bochkarev Photography (fertilizer) Usage Restrictions May only be used to promote this press release. 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.