IPI International Potash Institute
IPI International Potash Institute

Scientific abstracts

Title:
Bilan des Éléments Fertilisants sur une Exploitation Laitière de Montagne
Authors:
B. Jeangros and J. Troxler
Published in:
Revue Suisse d'àgriculture 38(3):121-125 (2006), French

Abstract:

From 1994 to 2003 three methods to measure the nutrients balance were compared on the dairy farm La Frêtaz (VD). Since 1994 no mineral fertilizers were applied on permanent grassland. At the whole farm level the difference between nutrients inputs and outputs was null or positive for nitrogen (N), phosphorus (P), potassium (K) and magnesium. Both methods comparing the plant requirements to the estimated or measured nutrients supply indicate a small deficit for N and P. The official method used in Switzerland until 2002 (AEF), which relies on an estimation of the nutrients supplied by livestock, leads to the highest deficits: -19 kg N/ha/year and -3 kg P/ha/year. All three methods show an excess of potassium. The surplus was much higher with the AEF approach than with the method taking into account the nutrients really supplied by the fertilizers. This means that the norm for K excretion by cattle is too high for the dairy farm La Frêtaz. On the whole, though the results differ according to the method and the nutrient, the risks of environment enrichment are small.

Return to the Scientific abstracts

In your Language

Choose your Crop

Choose your App
IPI research e-ifc app for iPad and iPhone available now from the Apple App Store
IPI Research App for Android and Apple phones and tablets.

Infographics
The Role of Potassium (K) in the Plant (in Urdu)
Potassium and Nitrogen Use Efficiency (NUE) in Urdu
Potassium in Soil and Plant Systems (in Urdu)
IPI profile infographic
Chloride - an essential nutrient
Potassium and Nitrogen Use Efficiency (NUE)
Managing Water and Fertilizer for Sustainable Agricultural Intensification - infographic
Potassium Improves your Crop Quality
Potassium Improves your Health
Potassium in Soil and Plant Systems
The Role of Potassium (K) in the Plant
What does a Plant Need to Live
Assessment of the Impact of Targeted Use of Fertilizer on Irrigated Rice in Asia
The Role of Potassium (K) in the Plant (in Urdu)

New publication