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Aims Vegetative groundcover and rootstock selection are popular growth control practices for fruit and nut crops. Theoretically, plant potential growth rate should influence competitive effectiveness; however, it is unclear if rootstock vigor alters crop productivity when groundcover is present. Methods In a humid-climate vineyard we grew young grapevines on low- and medium-vigor rootstocks with...
Four-fold variation in leaf-litter Ca concentration among 14 tree species growing in a common garden in central Poland was linked to variation in soil pH, exchangeable Ca, soil base saturation, forest floor turnover rates, and earthworm abundance. Given the potential importance of tissue Ca to biogeochemical processes, in this study we investigated potential controls on leaf Ca concentrations using...
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