Autumn Semester 2020 takes place in a mixed form of online and classroom teaching.
Please read the published information on the individual courses carefully.

751-3402-00L  Plant Nutrition II - Integrated Nutrient Management

SemesterSpring Semester 2015
LecturersE. Frossard, A. Oberson Dräyer
Periodicityyearly recurring course
Language of instructionGerman


AbstractTeaching knowledge on nutrient fluxes in agroecosystems so as to maximize nutrient use efficiency by crops and minimize losses to the environment while providing optimal nutrient supply to crops. Methods to establish nutrient budgets are presented. Nutrient input and output variables (e.g. losses by various pathways) are treated and their optimal management presented.
ObjectiveAt the end of the lecture the students can establish nutrient budgets, can critically evaluate agricultural systems as source of elements for the environment and can propose agricultural practices that limit these losses while maximizing nutrient use efficiency and optimizing nutrient supply to crops.
ContentThis course provides understanding of nutrient fluxes in agro-ecosystems so as to maximize nutrient use efficiency by crops while minimizing nutrient losses to the environment at optimal nutrient supply to the crop. First, different approaches to calculate nutrient budgets at various levels of the agro-ecosystem will be studied. Then the characteristics of input and output variables will be treated. These variables encompass organic (e.g. animal manure, plant residues, recycled organic wastes) and mineral fertilizers (e.g. minerals and products from recycling), symbiotic nitrogen fixation, nutrient deposition and pathways of nutrient losses. Measures to mitigate nutrient losses to the environment will be presented. Using case studies on nutrient rich and nutrient poor agro-ecosystems, strategies for an optimal nutrient management will be discussed that integrate attributes of soils, plants and fertilizers.