Dramatic Changes to Austin Fertilizer Recommendations
http://www.naturalgardeneraustin.com/ladybugbrand/recommendations.html

Stillhouse Spring Fertilizer Study
http://www.ci.austin.tx.us/watershed/publications/files/sr0307_fertilizerimpact.pdf

Leachate, Soil and Turf Concentrations of Nutrients from Fertilizer; Results from the Stillhouse Neighborhood Fertilizer Leachate http://www.ci.austin.tx.us/growgreen/downloads/stillhouse_leachate_study.pdf