. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. If Hflnlt to piMw vith tbab Mietto littlt bMki. 'jk UHj ialMtd tm or branch vfll Imooim m tiiidlj oieniftod with tht 'tt tht bark is oomplatoly coii> •wML (8m 1%. >.) Sndi branofaat Iwdc at if they were oovartd with aahee. If «• eat fbnmffii Am baik ^tliqoaly wt ahdl tm thst the tiarae bnaath am aa tit m tha oBtv aapwood ia oonapieaooaly oolorad potpla. On young branche* and MUMfy atoak thara ia freqnantly, but not always, a reddiah area aroond where
. San Jose scale [microform]. San José scale; Fruits; Insect pests; Insectes nuisibles, Lutte contre les; Pou de San José; Fruit. If Hflnlt to piMw vith tbab Mietto littlt bMki. 'jk UHj ialMtd tm or branch vfll Imooim m tiiidlj oieniftod with tht 'tt tht bark is oomplatoly coii> •wML (8m 1%. >.) Sndi branofaat Iwdc at if they were oovartd with aahee. If «• eat fbnmffii Am baik ^tliqoaly wt ahdl tm thst the tiarae bnaath am aa tit m tha oBtv aapwood ia oonapieaooaly oolorad potpla. On young branche* and MUMfy atoak thara ia freqnantly, but not always, a reddiah area aroond where the aeala feada. This halpa tha inapeetor to And tlie iaaact man eaaily. Tha skin of tta fmi^ eqweiaUy of apples and pears, is also oonspicnonsly marked witii thesa rid diaeokirationa, which often make it'eaay to dateet the preaence of the scale evn withont looking at the bark. On xpfim tha inaeels are legolarly moat nnmanms ia the calyx and atam ends, probaibly beeaaarihese are more sheltered {wrts. Leavsa, ttioQgfa not so commonly attacked as fniit and bark, are (rften badly infested,. Fl«. 8. San Jos« Scale on pear leares And dlsootontlons natural liie (after Lowe and Parrot). caused tttereby. especially on the upper surface. ne insect caoses these also to become discolored. (See Fig. 8.) The injury done by San Jos^ Scale is cansed by the miUions, or more correctly biUions, of the little creatures sucking the juice out of the plant through their long delicate beaks, and thus starring the tree by depriving it of ite food. It is claimed' that they also secrete a poison which increases the injury. Small trees may be Wiled ii a couple of years; larger trees usually take longer, and an old apple tree may sunrive for six years or more, but ultimately will perish if not treated Ilie same fate will befall any orchard once attacked and left unsprayed. In old trees M^ I ?*?' branches, that die first, and in putting a tree into shape to spray one jrften finds It necessary to c
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectpests, bookyear
