. Fig. 26. Sweet Potato Diseases. a. Black rot at place of a bruise, 6. black shank, c. showing a pycnidium of the black rot fungus, d. dry rot, e. cross section throug'i /, to show the effect of the disease on the root. /. Java black rot surface view, showing strings of spores oozing out from the center of spot, g. cross section through diseased sweet potato root to show pycnidia of the fungus Diplodia tubericola.

. Fig. 26. Sweet Potato Diseases. a. Black rot at place of a bruise, 6. black shank, c. showing a pycnidium of the black rot fungus, d. dry rot, e. cross section throug'i /, to show the effect of the disease on the root. /. Java black rot surface view, showing strings of spores oozing out from the center of spot, g. cross section through diseased sweet potato root to show pycnidia of the fungus Diplodia tubericola. Stock Photo

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