Lookup NU author(s): Dr Kirsten Brandt
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Organic vegetable production attempts to pursue multiple goals concerning influence on environment, production resources, and human health. In areas with limited availability of animal manure, there is a need for considering various off-farm nutrient resources for such production. Different organic and waste-derived fertilizer materials were used for broccoli production at two latitudes (58° and 67°) in Norway during two years. The fertilizer materials were applied at two rates of total N (80 and 170 kg ha–1) and compared with mineral fertilizer (170 kg ha–1) and no fertilizer. Broccoli yield was strongly influenced by fertilizer materials (algae meal < unfertilized control < sheep manure < extruded shrimp shell < anaerobically digested food waste < mineral fertilizer). Yield, but not glucosinolate content, was linearly correlated with estimated potentially plant-available N. However, extruded shrimp shell and mineral NPK fertilizer gave higher glucosinolate contents than sheep manure and no fertilizer. Sensory attributes were less affected by fertilizer material and plant-available N.
Author(s): Øvsthus I, Breland TA, Hagen S, Brandt K, Wold A-B, Bengtsson GB, Seljåsen R
Publication type: Article
Publication status: Published
Journal: Journal of Agricultural and Food Chemistry
Print publication date: 23/12/2015
Online publication date: 09/11/2015
Acceptance date: 09/11/2015
ISSN (print): 0021-8561
ISSN (electronic): 1520-5118
Publisher: American Chemical Society
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