Herbicides jeopardize the sustainability of agriculture. Unfortunately, no alternative weed management tool can level with their efficacy. Based on 17-years of observations, Scientists Adeux et al. showed that diversified crop rotation allowed low herbicide use, long-term weed management, and high productivity in grain-based cropping.
Coordinating the activity of key agronomy practices can enhance agroecosystem robustness. Scientists Li et al. recently found that including N2-fixing legume crops in the rotation improved resistance to stresses, causing agricultural systems to become more resilient and constant in productivity across rotation cycles. This enhanced robustness led to average increases in crop yield and farm net financial return of 5-8% and 12-23%, respectively.
The expansion of renewable energies aims at meeting the global energy demand while replacing fossil fuels. However, it requires large areas of land, leading to competition for limited land resources. Agrophotovoltaic systems can spare land resources by combining food and solar energy productions. Scientists Weselek et al. recently reviewed that such synergetic combination might increase overall land productivity by up to 70%. They concluded that agrophotovoltaic systems can be a valuable technical approach for more sustainable agriculture.
Perennial forage legume species provide high protein feed to animals and restore soil fertility. However current perennial forage legumes often require re-seeding each time the “perennial phase” is re-established. Scientists Edwards et al. recently introduced the concept of a “perennial ley-farming” system in which the perennial legume self regenerates from a hard seed bank, thus creating a more sustainable agro-ecosystem.
A transition from dominant unsustainable corporate food systems supported by fossil fuels and agrochemicals, to alternative socially just food systems incorporating ecological principals is needed. Scientists Gaitán-Cremaschi et al. reviewed the literature of transitions in food systems and present a framework of how food systems are configured in terms of production systems, value chains and innovation support structures. This overview can inform policies to support certain desired sustainability transition pathways.
Foreseen climate change is expected to impair grapevine natural processes, hence decreasing yield and grape quality. Scientists Bernardo et al. reviewed the effects of environmental stresses on viticulture in a Mediterranean-like climate and the available adaptation strategies for winegrowers and researchers. Rational and focused management can improve grapevine resilience to stresses. Defining clear production objectives appear crucial to develop sustainable viticulture.
Grain legumes such as pea, faba bean and lupin produce high-quality protein for food and feed. However, they are only grown on 1.5% of European arable land due to the belief that their yield is highly variable. Scientists Reckling et al. show that grain legume yields are actually as stable as other spring crops when evaluated in long-term experiments and with an appropriate indicator. These novel findings could overcome the current negative perception of grain legume cultivation and stimulate initiatives to improve the crops agronomy.
Future food systems will be shaped by policymakers and stakeholders through decisions taken at different levels. Scientists Karlsson et al. used a participatory approach, where researchers in agronomy, animal science, nutrition, and systems analysis and stakeholders worked together in an iterative manner, to develop a future food vision for the Nordic countries Sweden, Norway, Denmark, and Finland. They reckon that in the future, organic farming and limited livestock production will provide food for a large population while reducing environmental impacts.
The expansion of rubber cultivation into drought-prone areas of Northeast Thailand, calls for innovative management to increase drought resistance in young trees. Scientists Clermont-Dauphin et al. examined how intercrops affect the young tree root traits and resource availability for tree growth and survival. They found that intercrops improved drought resistance in young rubber trees.
Agro-ecological transition implies deep work transformations for farmers and actors. Coquil et al. review the ways these changes are studied and how such transformations can be assisted by regular advisers. They claim that the focus should be put on the reorientation of development dynamics in farming work. They also reckon that better support should accompany these reorientations during agro-ecological transition.