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Long and short term changes incrop yield and soil properties induced by the reduction of soil tillage in a long term experiment in Switzerland

Büchi, Lucie; Wendling, Marina; Amossé, Camille; Jeangros, Bernard; Sinaj, Sokrat and Charles, Raphaël (2017) Long and short term changes incrop yield and soil properties induced by the reduction of soil tillage in a long term experiment in Switzerland. Soil & Tillage Research, 174, pp. 120-129.

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Online at: https://www.sciencedirect.com/science/article/pii/S0167198717301290

Summary

To address the influence of soil tillage reduction on crop yield and soil properties, an experiment was set up in 1969 in the western part of Switzerland. A conventional tillage treatment with plough was compared to a minimum tillage treatment and a deep non inversion tillage treatment, converted to no till in 2007. Evolution of crop yield through time was investigated, as well as the soil properties in 2013. Mean soil properties and their stratification with depth were assessed. The results showed that, after 44 years, globally, all tillage treatments allowedtomaintainsimilaryieldsinthelongterm.However,duringthesametime,soilpropertieshavechanged deeply. Soil organic carbon has decreased compared to the initial situation, in all treatments except in the minimum tillage. This treatment also allowed to reach high clay to carbon ratio in the upper layer, suggesting good soil structural quality compared to the other treatments. In contrast, this did not result in significant differences in carbon stocks between tillage treatments, probably due to low carbon inputs in all treatments. In addition, a strong stratification patternwith depth was observedfor most of the nutrientsin the minimumtillage treatment, while the situation was more homogeneous in the plough treatment. The adoption of no till also modified soil properties and lead to clear stratification patterns after only six years. These results showed that crop yield could globally be maintained in reduced tillage systems, while insuring high soil fertility and structural quality. The important decrease in the number of tillage interventions and intensity of disturbance induced an improvement of soil properties. Reduced tillage practices could thus be advantageously adopted to insure crop production together with soil fertility improvement in rather short time period.


EPrint Type:Journal paper
Keywords:No till, Carbon sequestration, Stratification, reduced tillage, soil fertility
Subjects: Soil > Soil quality
Crop husbandry > Soil tillage
"Organics" in general > Countries and regions > Switzerland
Research affiliation: Switzerland > Agroscope
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Sustainability > Climate
ISSN:0167-1987
DOI:10.1016/j.still.2017.07.002
Deposited By: Charles, Dr. Raphaël
ID Code:33975
Deposited On:09 Nov 2018 13:55
Last Modified:06 Jan 2021 15:32
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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