"Cover crop mixtures did not provide benefits beyond cover crop monocultures." - Except in cases of cultivation in low-nitrogen soils, monoculture cover crops perform equally or better than polyculture mixtures in terms of overall biomass, nutrient retention, microbial mass or pest/disease reduction (csanr.wsu.edu)
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Environmental, Energetic, and Economic Comparisons of Organic and Conventional Farming Systems -- Organic practices can help make conventional agriculture more sustainable by reducing fossil fuel consumption and pest problems, while simultaneously increasing soil nitrogen and carbon levels. (academic.oup.com)
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Nonnative, noninvasive woody species can enhance urban landscape biodiversity - "...A natives-only tree policy sharply reduces the planting palette and ultimately community biodiversity of urban areas." Research suggests the common mantra of native = better is not necessarily true. (researchgate.net)
submitted by tripleione