. Agriculture for beginners. Fig. iiS. Plant Lice Fig. 119. Cage in whichTO BREED Insects Flowerpot, lamp chimney, andcloth. (From a photographfurnished by Mrs. Anna , Cornell University.) SECTION XXX —ORCHARD INSECTS The San Josd Scale was one of the most dreaded enemiesof fruit trees. It is in fact an outlaw in many states. Itis an illegal act to sell fruit trees affected by it. Fig. 120shows a view of a branch nearly covered with this pest. ORCHARD, GARDEN, AND FIELD INSECTS 12/ Although this scale is a very minute animal, yet so rapidlydoes it multiply that it is very dangerous t
. Agriculture for beginners. Fig. iiS. Plant Lice Fig. 119. Cage in whichTO BREED Insects Flowerpot, lamp chimney, andcloth. (From a photographfurnished by Mrs. Anna , Cornell University.) SECTION XXX —ORCHARD INSECTS The San Josd Scale was one of the most dreaded enemiesof fruit trees. It is in fact an outlaw in many states. Itis an illegal act to sell fruit trees affected by it. Fig. 120shows a view of a branch nearly covered with this pest. ORCHARD, GARDEN, AND FIELD INSECTS 12/ Although this scale is a very minute animal, yet so rapidlydoes it multiply that it is very dangerous to the allow new trees to be brought into your orchardwithout positive knowledge that they are free from thescale. If, however, this scale should in any way gainaccess to your orchard, you can prevent its spreading by. Fig. 120. San Jose Scale Fig. 121. Single San Jos6 Scale From a drawing furnished by the (Magnified.) From an engraving furnished byUnited States Department of the United States Department of Agricul- Agriculture ture thorough spraying with the fire-boiled lime-sulphur mixture has long been used on the Pacific coast as aremedy for various scale insects. When it was first triedin other parts of the United States, the results were notsatisfactory, and its use was abandoned. However, laterexperiments with it have proved that this mixture is thor-oughly effective in killing this scale, and that it is perfectlyharmless to the trees. Until its utility was proved, the 128 AGRICULTURE FOR BEGINNERS San Jose scale was a most dreaded nursery and orchard was even thought necessary to destroy trees when theybecame infected. The hme-sulphur mixture and some modifications of it,known as sulphur washes, not only kill the San Jose scalebut are also useful in reducing fungous injur
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