1. Quantifying the effects of tillage practices on annual runoff and phosphorus export through drainage tiles and surface runoff in southern Ontario, Canada Merrin L. Macrae1,…

Slide 1 Introduction The export of nutrients (nitrate and phosphate) from intensively-managed agro-ecosystems of the US Midwest has been blamed for degradation of water quality…

Slide 1 Loweswater: a case study on the importance of ‘local’ scale for ecosystem management Lisa Norton, Claire Waterton, Judith Tsouvalis, Stephen Maberly, Linda May,…

Phosphorus Nutrition of Cotton Outline - P Nutrition of Cotton U.S. cotton yields since 1975 Growth and development of the cotton plant Nutrient uptake General P nutrition…

Phosphorus Nutrition of Cotton Outline - P Nutrition of Cotton U.S. cotton yields since 1975 Growth and development of the cotton plant Nutrient uptake General P nutrition…