Effects of suboptimal fertilization on arable crops | Effets d'une fertilisation suboptimale en grandes cultures
2008
Flisch, R. | Hausherr, R.M. | Brack, E., Station de recherche Agroscope Reckenholz-Taenikon ART, Zuerich (Switzerland)
The production of high yields and adequate product quality requires a sufficient and balanced nutrients supply of the soil. The field trial, conducted since 1989 for purpose of demonstration, shows both the impact of different fertilizer forms (organic and mineral fertilizer) and the effects of an unbalanced fertilization. No differences in yield and product quality have been observed between the treatments «cattle slurry» and «mineral fertilizer», both well adapted to the nutrient demand of the crops. But the annual application of 250 dt/ha of farmyard manure decreased crop yield and product quality, due to the low availability of nitrogen to the crops and the low content of potash. The lack of a single nutrient element (N, P or K) in the mineral treatments affected crop yield, nutrient contents in crops and soil negatively already after few years. All crops have revealed deficiency symptoms of N, P or K in these treatments.
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