The effect of dilute liquid lime-sulphur sprays on the photosynthesis of apple leaves

Brody, H.W.; Childers, N.F.

Proceedings of the American Society for Horticultural Science 36: 205-209


ISSN/ISBN: 0099-4065
Accession: 013558621

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These sprays may reduce the apparent rate of photosynthesis of Stayman apple leaves for 3 to 5 days after spray treatment, even though no visible burning occurs. When the maximum temp. reaches 90°-100° F assimilation is usually significantly reduced, regardless of the spray conc. in contact with the leaf tissues. Except for 3 cases in these expts., the rate of photosynthesis of sprayed leaves showed a reduction on the 1st day after treatment; otherwise the reduction in assimilation occurred not later than the 2d day following the spray application.