Study

Bioavailable phosphorus dynamics in agricultural soils and effects on water quality

  • Published source details Sharpley A.N., Robinson J. & Smith S.J. (1995) Bioavailable phosphorus dynamics in agricultural soils and effects on water quality. Geoderma, 67, 1-15.

Actions

This study is summarised as evidence for the following.

Action Category

Change tillage practices

Action Link
Soil Fertility
  1. Change tillage practices

    A site comparison study in 1981-1982 on clay-, silt- and sandy-loam and loam soils in Oklahoma and Texas, USA (Sharpley et al. 1995) found that total phosphorus loss was 93% lower from no-till soil than conventionally tilled soil. In no-till soil, 73% of the phosphorus was bioavailable (the point at which it becomes available for use after application) compared with 28% in conventionally tilled soil. At Bushland, the wheat Tiricum aestivum – sorghum Sorghum bicolor fallow rotation was under reduced tillage (stubble mulch tillage). At El Reno and Woodward, wheat was under conventional tillage/ploughing (chisel, mouldboard and discing). At Fort Cobb, the peanut Arachis hypogaea – sorghum rotation was under conventional tillage/ploughing (chisel, mouldboard, harrowing and discing). At each unfertilized and fertilized watershed, four soil samples were collected at monthly intervals. Runoff, total, organic and inorganic phosphorus were measured.

     

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust