. The culture and diseases of the sweet pea. . Fig. 15.—Powdery Mildew, healthy and diseased leaves. Notice the white covering of the affected leaves, due to the growth of the mildew fungus on the surface of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Taubenhaus, J. J. (Jacob Joseph), 1885-. New York : E. P. Dutton & Company

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