Agroecosystem management and nutritional quality of plant foods: the case of organic fruits and vegetables

Summary

This critical review, published in Critical Reviews in Plant Sciences, evaluates the scientific evidence linking organic agroecosystem management to changes in the nutritional quality of fruit and vegetables. The authors, drawing on a broad body of comparative literature, consider the biological mechanisms — including plant stress responses and reduced nitrogen inputs — that may explain observed differences in phytonutrient levels between organic and conventionally grown produce. The paper concludes that organic management can, under certain conditions, increase concentrations of specific secondary metabolites and antioxidants, though the magnitude and consistency of effects vary by crop, compound, and management context.

UK applicability

The review includes evidence from European trials, including UK-based research associated with the Nafferton Farming Systems Comparison at Newcastle University, making its findings directly relevant to UK horticultural practice and ongoing policy debate around organic standards and food quality.

Key measures

Phytochemical concentrations (e.g. polyphenols, flavonoids, ascorbic acid, carotenoids); mineral content; antioxidant capacity; comparison of organic vs. conventional management systems

Outcomes reported

The review examines how organic versus conventional agroecosystem management practices influence the concentrations of nutritionally relevant compounds — including antioxidants, polyphenols, vitamins, and minerals — in fruit and vegetables. It assesses the evidence base for whether organic production systems consistently yield produce with enhanced nutritional or phytochemical profiles.

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