Agriculture may be entering a new era in which crops are judged not only by how much food they produce, but by how many ecological functions they can perform at the same time. A perspective published in npj Sustainable Agriculture proposes a trait-based framework for “reframing” crops as multifunctional organisms—plants that can deliver food, support biodiversity, improve soil, regulate water and contribute to climate resilience within the same farming system. The approach challenges the traditional idea that a successful crop is primarily a high-yielding crop.
The paper, led by Mastronardi, Arcieri, Crudele and colleagues, argues that modern agriculture has often reduced crop evaluation to a narrow set of production metrics, including grain yield, harvest index, growth rate and resistance to individual pests or diseases. These measurements remain important, but they can overlook the wider biological effects of a crop. A plant’s architecture, root system, flowering period, chemical composition and interaction with soil organisms may influence functions that extend far beyond the harvested product.
At the centre of the proposed framework is the concept of plant traits. Traits are measurable characteristics of organisms that affect their performance and their interactions with the environment. In crops, these may include root depth and density, leaf area, canopy structure, nitrogen-use efficiency, phenology, plant height, flowering traits, water-use strategy and the production of compounds that influence microbes or herbivores. By connecting these characteristics to ecosystem processes, researchers can begin to predict which crops, varieties or crop combinations are most suitable for specific environmental and social goals.
This shift is significant because sustainable agriculture rarely depends on a single trait. A deep and extensive root system, for example, may allow a crop to access water from lower soil layers, reduce erosion and contribute more organic matter below ground. However, the same root architecture could demand greater carbon investment or compete with neighbouring plants for resources. A crop with a dense canopy might suppress weeds and protect the soil from intense rainfall, yet it could also increase humidity around leaves and create conditions favourable to certain diseases. The trait-based approach is designed to make such benefits and trade-offs visible.
The authors present crops as participants in agroecosystems rather than isolated production units. Their traits can affect nutrient cycling, soil structure, water infiltration, carbon storage and relationships with insects, fungi and microorganisms. Some crops can provide nectar or shelter for pollinators and natural enemies of pests, particularly when they flower at times when surrounding landscapes offer few resources. Others may contribute residues that decompose rapidly and release nutrients, while crops with more resistant tissues may build longer-lasting soil organic matter.
This perspective also has implications for crop breeding. Conventional breeding has frequently prioritised maximum productivity under controlled or highly managed conditions. A multifunctional breeding strategy would still pursue reliable yields, but would evaluate yield alongside resource-use efficiency, soil benefits, compatibility with rotations and contributions to biodiversity. Instead of searching for a universally superior crop, breeders could develop plant types adapted to particular combinations of climate, soil, management and ecosystem objectives.
The framework could also change how farmers design fields. Traits can be assembled through cultivar selection, intercropping, cover crops, agroforestry and diversified rotations. A shallow-rooted crop paired with a deep-rooted companion may exploit different soil layers, while crops with contrasting growth periods can reduce competition and keep living roots in the ground for longer. The success of these arrangements depends on context: temperature, rainfall, soil texture, planting density, nutrient availability and local pest communities all determine whether a trait combination produces synergy or conflict.
A major challenge is measurement. Ecosystem services such as improved soil health, pollination support or greater resilience to drought develop over time and are often more difficult to quantify than harvested yield. The researchers therefore call for integrated assessment systems that combine plant physiology, ecology, agronomy and data analysis. Field observations, remote sensing, root measurements, soil monitoring and environmental models could be used together to connect visible plant characteristics with outcomes at the farm and landscape scales.
The trait-based vision does not suggest that every crop must perform every function, nor that multifunctionality automatically guarantees sustainability. Instead, it offers a common scientific language for identifying what plants do, where they do it and what compromises may result. By treating crops as biological infrastructure with multiple roles, the approach could help agriculture move beyond a simple production-versus-conservation debate. The emerging message is direct: the future of farming may depend less on finding one perfect crop and more on designing communities of plants whose traits work together to produce food while strengthening the ecosystems that make production possible.
Subject of Research: Trait-based multifunctional crops and their role in sustainable agriculture
Article Title: Reframing crops as multifunctional: a trait-based approach for sustainable agriculture
Article References: Mastronardi, M.G., Arcieri, F., Crudele, M. et al. “Reframing crops as multifunctional: a trait-based approach for sustainable agriculture.” npj Sustainable Agriculture 4, 63 (2026). https://doi.org/10.1038/s44264-026-00176-3
Image Credits: AI Generated
DOI: https://doi.org/10.1038/s44264-026-00176-3
Keywords: multifunctional crops, plant traits, sustainable agriculture, agroecology, crop breeding, biodiversity, soil health, ecosystem services, climate resilience, intercropping
Tags: climate resilience in agriculturecrop architecture and ecosystem servicescrop biodiversity supportecological functions in farmingholistic crop assessmentinnovative agricultural frameworksmultifunctional cropsplant traits for sustainabilitysoil health improvementsustainable agriculturetrait-based crop evaluationwater regulation by crops
