Assessing cropping system multifunctionality: An analysis of trade-offs and synergies in French cereal fields

CONTEXT

Identifying the strengths and weaknesses of existing cropping systems in a given context is a key first step before designing new, more sustainable cropping systems. The concept of multifunctionality can be a useful tool for cropping system assessment. Whether and how cropping systems and specific management practices might modulate agroecosystem multifunctionality remains unknown, as do the potential trade-offs and synergies among functions.

OBJECTIVE

This study aimed to (i) assess the multifunctionality of annual cropping systems by estimating their agronomic, ecological and socio-economic performances; (ii) identify trade-offs and synergies among functions; (iii) highlight management practices that can be mobilized to foster synergies between agricultural production and other functions.

METHODS

We measured 14 primary variables, used as proxies for seven functions, in 20 conventional and 20 organic winter cereal fields, in northwestern France. We considered three management practice description levels: (i) farming system (i.e. organic vs. conventional), (ii) combination of management practices that defines a cropping system, and (iii) individual management practices.

RESULTS AND CONCLUSIONS

We found a strong trade-off between functions related to ecological performance and agronomic, socio-economic performances, especially between biodiversity conservation and food and feed production. Organic systems tended to minimize this trade-off. Our study also revealed contrasts in levels of functions despite similar multifunctionality value across cropping systems. The number of field interventions and nitrogen inputs were the main drivers of cropping system multifunctionality and its underlying functions. The results indicate that specific management practices, such as reducing within-field interventions and nitrogen fertilization amount, could be integrated even in conventional cropping systems to improve multifunctionality. More generally, our work opens the door to further studies on how agricultural management fosters the simultaneous provision of multiple functions including socio-economic ones.

SIGNIFICANCE

Besides multifunctionality assessment of cropping systems, our study emphasizes the need to further explore how management practices shape the provision of multiple functions and their potential trade-offs. This knowledge is crucial to develop effective strategies for the design of sustainable cropping systems.