Academic article

Effects of organic and waste-derived fertilizers on yield, nitrogen and glucosinolate contents, and sensory quality of broccoli (Brassica oleracea L. var. italica)

Øvsthus, Ingunn; Breland, Tor Arvid; Hagen, Sidsel Fiskaa; Brandt, Kirsten; Wold, Anne-Berit; Bengtsson, Gunnar; Seljåsen, Randi

Publication details

Journal: Journal of Agricultural and Food Chemistry, vol. 63, p. 10757–10767, Monday 9. November 2015

Publisher: American Chemical Society (ACS)

Issue: 50

International Standard Numbers:
Printed: 0021-8561
Electronic: 1520-5118

Open Access: none


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.