. Fig. 173. A variety of cotton resistant to the wilt; note the complete failure of the other varieties. After Orton. where the disease runs its course more slowly, the intervals between the different stages are more prolonged. In light sand the disease may progress very rapidly and may con- sist of only two stages, the sudden wilted condition followed by speedy death. The final diagnostic symptom of the dis- ease, however, as in the case of many other wilts, is the darkening of the affected veins, which change from the normal white to light brown or black. Though in most cases the plant dies,
. Fig. 173. A variety of cotton resistant to the wilt; note the complete failure of the other varieties. After Orton. where the disease runs its course more slowly, the intervals between the different stages are more prolonged. In light sand the disease may progress very rapidly and may con- sist of only two stages, the sudden wilted condition followed by speedy death. The final diagnostic symptom of the dis- ease, however, as in the case of many other wilts, is the darkening of the affected veins, which change from the normal white to light brown or black. Though in most cases the plant dies, occasionally one revives and seems to
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
