Diseases of truck crops Diseases of truck crops / Ralph E. Smith diseasesoftruckc119smit Year: 1940 50 California Agricultural Extension Service [Cir. 119 ENDIVE Cottony Rot.—Endive plants affected with cottony rot wilt and die on account of a rotting of the roots and the stem at the surface of the ground. Sclerotinia sclerotiorum, a white, moldy fungus with black sclerotia, can be seen on the surface. See 'Cottony Mold' (p. 90). Rust.—Affected leaves are blighted and spotted with the dusty spore '4 1 P' f ** Fig. 25.—Eust of endive leaves. pustules of a rust fungus, Puccinia hieraci
Diseases of truck crops Diseases of truck crops / Ralph E. Smith diseasesoftruckc119smit Year: 1940 50 California Agricultural Extension Service [Cir. 119 ENDIVE Cottony Rot.—Endive plants affected with cottony rot wilt and die on account of a rotting of the roots and the stem at the surface of the ground. Sclerotinia sclerotiorum, a white, moldy fungus with black sclerotia, can be seen on the surface. See 'Cottony Mold' (p. 90). Rust.—Affected leaves are blighted and spotted with the dusty spore '4 1 P' f ** Fig. 25.—Eust of endive leaves. pustules of a rust fungus, Puccinia hieracii (g. 25). Crops are some- times ruined. No practical treatment for this disease has been suggested. GARLIC2 Nematode.—When this pest is present, the plants are stunted and killed and the bulbs decompose in certain spots in the field. These areas gradually increase in size as the nematode spreads. This is a strain of the same species—Ditylenchus dipsaci—as the bulb or stem nematode (p. 94). The variety of garlic called 'Late' is much more susceptible than the 'Early' variety. Care should be taken in the selection of planting stock, to be sure that it is nematode-free. Infested soil should not be planted to garlic, espe- cially the Late variety. - For further information about garlic culture and diseases see: McCallum, Eoy D, Growing and handling garlic in California. California Agr. Ext. Cir. 84:1-16. 13 figs. 1934.
Size: 1241px × 1611px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
