Nitrate leaching after cut grass/clover leys as affected by time of ploughing

  • Published source details Djurhuus J & Olsen P (1997) Nitrate leaching after cut grass/clover leys as affected by time of ploughing. Soil Use and Management, 13, 61-67.


This study is summarised as evidence for the following.

Action Category

Change the timing of ploughing

Action Link
Soil Fertility
  1. Change the timing of ploughing

    A randomized, replicated site comparison study in 1989-1995 on coarse sand and sandy-loam soils in Denmark, found that nitrate loss from soil (leaching) was lower when ploughed in spring (81.5 kg N/ha) compared to winter (106.4 kg N/ha). Nitrate leaching was higher on coarse sand (160-254 kg N/ha) compared to sandy loam (129-233 kg N/ha) soils. Wheat Triticum aestivum, barley Hordeum vulgare and rye Secale cereal were grown at two locations. A ryegrass Lolium perenne/clover Trifolium repens ley mix was used, undersown with spring barley on areas 126 m2. Within these were two sampling plots 11 m2 (at Jyndevad) and 15 m2 (Foulum). There were five treatments: autumn ploughing with wheat followed by rye; autumn ploughing – wheat/barley; autumn ploughing – barley/rye; autumn ploughing – barley both years, spring ploughing – barley/rye. Soil samples were taken at the start and end of each treatment. Soil water, organic carbon and total nitrogen 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 20

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 Bat Conservation InternationalPeople trust for endangered speciesVincet Wildlife Trust