Considerations of Energy Input of Herbicides and Soil Cultivation | Energetische Betrachtung zum Einsatz von Herbiziden und Bodenbearbeitung
Schwarz, Jürgen
Conservation tillage in Germany increased steadily in recent years. The mentioned benefits of conservation tillage are e.g. time saving and reduced energy consumption. In a long-term field trial at the JKI research field Dahnsdorf (federal state of Brandenburg), the effects of conservation tillage in different plant protection strategies are studied since autumn 2007. This paper examines the impact of energy-use of conventional and conservation tillage. The cultivation is done by the plow and packer (turning soil cultivation) and by cultivator (non-turning soil cultivation). The decision to use or not to use glyphosate in non-turning variants is done year by year and for each crop separately. There is no routine spraying. This is also true for the use of graminicide in winter rape. These decisions are highly dependent on the weather in autumn and the associated soil moisture. The use of the plow has an energy input of around 1,045 MJ/ha. The energy input for the non-turning soil cultivation amounts about 510 MJ/ha averaged over the years and the different crops. So conservation tillage has about half energy input in relation to conventional tillage. However, this value is highly depending on the weather conditions of the year and the crop.
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