Species-rich non-intensively managed grasslands are among the most threatened ecosystems of Central Europe. Therefore, they are the focus of various conservation efforts at the regional, national and international level. In this context, contractual nature conservation schemes are widely imple-mented to ensure conservation of these grasslands through adequate agricultural management. These contracts preclude the use of fertilizer and allow only one to two cuts per year, starting not before June. In this study, we analysed data from 468 samples of the first and second cut, from 145 non-intensively managed grassland locations of different vegetation types from grasslands in south-western Luxembourg. The data cover the period 2001 to 2018. With this data set we assessed the long-term impact of low-input grassland management on parameters of fodder quality and quantity, and whether the patterns differ between vegetation types. Based on these findings we evaluated the potential to integrate the harvested fodder ...