. Bulletin. Agriculture; Agriculture -- Arizona. «10 Thirty-second Annual Report hot water, seed treated with concentrated sulphuric acid and then with mercuric chloride, seed treated with mercuric chloride, and seed treated with formalin. The study should not only afford information regarding the relation of alkali to susceptibility of black arm and leaf spot in cotton, but also facts bearing on the value of different disinfecting agents for use in treating cotton seed. MISCELLANEOUS STUDIES LETTUCE ROT A bad outbreak of bacterial rot of lettuce occurred at Casa Grande and Toltec early in the
. Bulletin. Agriculture; Agriculture -- Arizona. «10 Thirty-second Annual Report hot water, seed treated with concentrated sulphuric acid and then with mercuric chloride, seed treated with mercuric chloride, and seed treated with formalin. The study should not only afford information regarding the relation of alkali to susceptibility of black arm and leaf spot in cotton, but also facts bearing on the value of different disinfecting agents for use in treating cotton seed. MISCELLANEOUS STUDIES LETTUCE ROT A bad outbreak of bacterial rot of lettuce occurred at Casa Grande and Toltec early in the spring of 1921. The disease usually affected first the outer leaves of the head, causing a brown discoloration of the fibrovascular bundles, then of the entire leaves, and eventually turned the head into a dark wet, slimy mass. One entire field of 60 acres near Toltec was Fig. 8.—Head of lettuce from the market, inoculated in the laboratory with bacterial rot from diseased plants taken from field near 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 University of Arizona. Agricultural Experiment Station. Tucson : Agricultural Experiment Station, University of Arizona
Size: 1671px × 1494px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectagriculture
