. Better fruit. Fruit-culture. Figure 1, Brown mile; 2. Red spider; 3, 4, 5 and fi, LarvEc, pupa, adult and egg of Scymnus punc- tum. Figure 1 enlarged. 66 times; 2, times; 3. 4, a and 6, 30 times. Original. Miss M. A. Palmer, delineator. Colorado Experiment Station. WOOLLY APHIS, ROOT FORM a, Small root showing swellings caused by the lice; b, Wingless louse, showing woolly secretion; c, Winged louse. (After Saunders.) its control is relatively easy. Spraying with bordeaux or lime-sulphur at the time the leaf buds are opening, and, pos- sibly, one or two later applications of bordeaux, d
. Better fruit. Fruit-culture. Figure 1, Brown mile; 2. Red spider; 3, 4, 5 and fi, LarvEc, pupa, adult and egg of Scymnus punc- tum. Figure 1 enlarged. 66 times; 2, times; 3. 4, a and 6, 30 times. Original. Miss M. A. Palmer, delineator. Colorado Experiment Station. WOOLLY APHIS, ROOT FORM a, Small root showing swellings caused by the lice; b, Wingless louse, showing woolly secretion; c, Winged louse. (After Saunders.) its control is relatively easy. Spraying with bordeaux or lime-sulphur at the time the leaf buds are opening, and, pos- sibly, one or two later applications of bordeaux, depending on the weather conditions, will control this trouble. In this locality, as well as other coast sec- tions, bordeaux should be used with cau- tion, for the fogs and humidity are apt to cause bordeaux injury to the fruit as well as the foliage. The malady known in this section as "sappy bark disease" is still an unsettled problem, both as to its cause and means of control. At present the most serious pest with which the apple growers of Pajaro Val- ley have to contend is the apple powdery mildew. It is relatively quite common throughout the state—in fact throughout the arid West—but does most damage along the coast. It usually occurs on the lower side of the leaf and has a white powdery appearance, as the name would indicate. Even a small infection is sufficient to stunt the growth and cause a crinkling of that particular portion of the leaf, and when several infections become estab- lished at once on a young growing leaf the result is an almost immediate check- ing of growth and the stunted leaf becomes very much crinkled. The cur- rent year's twigs are also very suscep- tible to infection, becoming entirely cov- ered with the white powdery growth. As a terminal bud is expanding the emerging leaves may become infected on. SCURVY BARK LOUSE a, Twig showing scales of female louse; b, Twig showing scales of male louse; c, Scale of female, greatly enlarged; d,
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