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18 August 2020 Improving zinc and copper delivery for subirrigated greenhouse-grown pot chrysanthemums
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Abstract

Moderate levels of zinc (3.50, 1.75 or 0.875 μmol·L?1 Zn) or copper (0.75, 0.38 or 0.19 μmol·L?1 Cu), in combination with a complete suite of other essential nutrients, were supplied up to flower bud break only, to two cultivars of subirrigated, potted, pinched chrysanthemums. Market-quality plants were produced with sufficient leaf-zinc or leaf-copper even though the delivery of the respective nutrient could be reduced by 75% compared with an industry standard. These results are interpreted as evidence for improved uptake efficiency with decreasing Zn or Cu delivery. Our modified delivery practice could contribute to low-input production of floricultural crops.

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Barry J. Shelp, Edward J. Flaherty, Skye Duncan Stephens, and Alyna J. Donetz "Improving zinc and copper delivery for subirrigated greenhouse-grown pot chrysanthemums," Canadian Journal of Plant Science 101(2), 268-273, (18 August 2020). https://doi.org/10.1139/cjps-2020-0175
Received: 28 June 2020; Accepted: 16 August 2020; Published: 18 August 2020
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