. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 141. Leaf Spot of Beets 3IO FUNGOUS DISEASES OF PLANTS. Fig. 142. Effects of the Leaf-SpotFungus: Prolonged Crown nearly upright, although some-what curled or rolled, present-ing a characteristic appearancein the field. Since the outer leaves arethe first to succumb, the plantcontinues to develop new leavesfrom the bud, and the crownmay thus become considerablyelongated (Fig. 142), at a seri-ous sacrifice to root develop-ment, and probably at great lossto the sugar content. It has been stated by Ger
. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 141. Leaf Spot of Beets 3IO FUNGOUS DISEASES OF PLANTS. Fig. 142. Effects of the Leaf-SpotFungus: Prolonged Crown nearly upright, although some-what curled or rolled, present-ing a characteristic appearancein the field. Since the outer leaves arethe first to succumb, the plantcontinues to develop new leavesfrom the bud, and the crownmay thus become considerablyelongated (Fig. 142), at a seri-ous sacrifice to root develop-ment, and probably at great lossto the sugar content. It has been stated by Germanobservers that the leaf-spot fun-gus may also be found upon thebracts, peduncles, and even uponthe seed pods. It is therefore thought that the fungus may be spread with the seed. The fungus. When the leaf spotsappear gray at the centers one maybe sure of finding the conidiophoresand conidia of the fungus in abun-dance. The former arise in smallclusters, apparently through thestomates at first. The base of thecluster is usually a few-celled conidiophores are flavous, andordinarily 35-55X4-5/^- The co-nidia are produced at the apices
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