hewing gum is different from other. confections because it contains gum. base, which is the insoluble rubbery mass, called a cud or bolus, that remains in the. mouth. Historically, people have chewed. various insoluble materials for eons to. cleanse the mouth and teeth and to abate. thirst.
Late blight in both tomatoes and potatoes is caused by the oomycete Phytophthora infestans, and is a worldwide destructive disease. Under favorable weather conditions, tomato and potato crops can be destroyed within days. Cool, moist conditions are considered most favorable for late blight to develop and spread.
Tomato stems and leaves. Tomato plants are also susceptible to late blight, and the foliar symptoms are similar. Like potato, infected tomato plants (Figure 12) may be rapidly infected and destroyed by P. infestans.White sporulation (sporangia and sporangiophores) (Figure 13) may be visible in humid weather.omato stems and leaves. Tomato plants are also susceptible to late blight, and the foliar symptoms are similar. Like potato, infected tomato plants (Figure 12) may be rapidly infected and destroyed by P. infestans.