Multi-criteria decision analysis methods in agri-food research

Picture copyright Gésan-Guiziou et al.

The assessment of agri-food system sustainability requires a multi-criteria approach based on multidisciplinary efforts. Scientists Gésan-Guiziou et al. analyzed the diversity and potentiality of multi-criteria decision analysis techniques in agri-food research. They showed a strong influence of scientific disciplines on the methods used and suggested potential improvements. To become more effective, these methods must extend to ecosystem services and include participatory science actors in the construction and decision processes.

By dispersing seeds, bats generate essential ecosystem services

Picture copyright Enríquez-Acevedo et al.

When frugivorous bats forage for fruits in forests or agricultural lands, they serve the important ecological function of seed dispersal. In the Colombian Andean region, researchers Enríquez-Acevedo et al. studied how seed dispersal by fruit bats can generate important ecosystem services for agroecosystems, mixed-crops being more impacted than extensive livestock agroecosystems, and eventually for society.

Insights from 40 years of research on mycorrhiza – walnut tree root interactions

Picture copyright Mortier et al.

Walnut trees strongly depend on arbuscular mycorrhizae for their mineral nutrition. In return, these fungi obtain from the trees, sugars and lipids to sustain their growth and reproduction. Scientists Mortier et al. surveyed 40 years of scientific literature on the relationships between arbuscular mycorrhizae and walnut tree roots. The root colonization process leads to enhanced seedling survival and quality. The knowledge of positive and negative feedbacks between walnut planting and the fungi allows developing sustainable walnut agroforestry systems.

Fertilization strategies for integrated crop-livestock systems

Picture copyright Carie van Ravenswaay

Integrated Crop-Livestock Systems are nature-inspired food production systems, seeking sustainable intensification. They count on diversity and nutrient cycling to deliver ecosystem services, although their current fertilization practices follow a conventional per crop basis. Scientists Farias et al. evaluated several systems growing soybean in rotation with pastures for sheep. They showed that adopting a system fertilization strategy and integrating crops with livestock saved on fertilization, thereby decreasing costs and pollution while retrieving autonomy at the farm level.

Agroecological principles and elements for sustainable food systems

Picture copyright Jerzy Górecki

Persistent malnutrition and rural poverty, environmental degradation, and loss of biodiversity are global challenges for food systems, aggravated by the growing consequences of climate change. Agroecological principles, when applied in context, generate transition pathways that transform agricultural and food systems to address these issues. Scientists Wezel et al. identified among these principles, four key entry points for systems transformation: diversity, circular and solidarity economy, co-creation and sharing of knowledge, and responsible governance.

Organic olive rainfed system for less erosion and better soil health

Picture copyright Duran et al.

Soil erosion rates are high in rainfed olive mountain plantations applying conventional practices, compromising, therefore, their long-term sustainability. Implementing sustainable soil management strategies is essential for hillslopes and low-fertility soils where plantations cover vast tracts of land. Researchers Durán et al. revealed potential environmental benefits of the organic system in controlling water erosion and improving soil health restoration compared to the conventional system.

The effect of shade trees on robusta coffee depends on tree age

Picture copyright Piato et al.

Coffee plantation productivity is threatened by both climate change and decreasing revenues of growers. Scientists Piato et al. analyzed how growing robusta coffee under shade trees impacts coffee growth, yield, and quality. They found that the effects depend on tree age and the robusta clone tested. Whereas moderate shade can increase growth and yield, excessive shade may alter cup quality.

Citizen science creates opportunities for reshaping agricultural research

Picture copyright Jeske van de Gevel

Citizen science promises an innovative approach to participation in research but its potential in agricultural research has not been systematically examined. Scientists van de Gevel et al. reviewed the literature and found that citizen science opens up four opportunities for creatively reshaping research: (i) new possibilities for interdisciplinary collaboration, (ii) rethinking configurations of socio-computational systems, (iii) democratization of science, and (iv) new accountabilities.

Do all grain legumes provide comparable ecosystem services?

Picture copyright Guinet et al.

Legumes have a key role to play in agriculture transition towards greater sustainability, due to their ability to provide ecosystem services. However, choosing the right grain legumes to provide specific ecosystem services remains difficult because references are lacking for a diversity of species. Guinet et al. characterized and distinguished ten-grain legumes according to their ability to deliver contrasted nitrogen-related ecosystem services. Their study provides a rationale for choosing legumes species according to intended objectives and for adjusting N management in cropping systems.

Optimizing nitrogen fertilization for sustainable potato production

Picture copyright Wang et al.

Food security and environmental protection require optimizing crop N fertilization. Scientists Wang et al. reviewed studies on Chinese potato production to determine the optimal N-fertilization rate at a regional scale. The recommended rate improved N use efficiency and agronomic efficiency without sacrificing potato yield. These practices establish a reasonable trade-off between potato production and N-fertilizer management for the development of more sustainable agricultural systems.