The Injurious Insects And Plant Diseases
The Injurious Insects And Plant Diseases
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In our eReader you can find the full English version of the book. Read The Injurious Insects And Plant Diseases Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Injurious Insects And Plant Diseases
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The lice invariably gather at such points and persist throughout the year in the wounds of this character, or those made from other causes. The colony represented on the side branch at the base of a Digitized by Google 14 leaf is typical of the summer colonies. These rarely make large galls, but become at times very numerous in individuals and pro- duce many winged migrants in the late season. The root is, how- ever, the special seat of attack by this insect in our nurseries. On the roots where...ver attacked characteristic galls or swellings are produced. These may be prominent about the crown of the plant, as well as on the tap root and side branches. This condition is shown in figure 13. A comparison with figures of crown gall will show cloarly discemable differences between the two troubles.
The full-gro^Ti female louse and the pupal form are. shown ^t- figures 14 and 15 respectively. The long wax threads and downy' ^#^f«ff»ff7ri««i»»k«#cMifirii Fig. 16.— WiDged Agamic Female of Woolly Aphis, much enlarged.
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You can find similar books in the "Read Also" column, or choose other free books by William Bradford Alwood to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The lice invariably gather at such points and persist throughout the year in the wounds of this character, or those made from other causes. The colony represented on the side branch at the base of a Digitized by Google 14 leaf is typical of the summer colonies. These rarely make large galls, but become at times very numerous in individuals and pro- duce many winged migrants in the late season. The root is, how- ever, the special seat of attack by this insect in our nurseries. On the roots where...ver attacked characteristic galls or swellings are produced. These may be prominent about the crown of the plant, as well as on the tap root and side branches. This condition is shown in figure 13. A comparison with figures of crown gall will show cloarly discemable differences between the two troubles.
The full-gro^Ti female louse and the pupal form are. shown ^t- figures 14 and 15 respectively. The long wax threads and downy' ^#^f«ff»ff7ri««i»»k«#cMifirii Fig. 16.— WiDged Agamic Female of Woolly Aphis, much enlarged.
What to read after The Injurious Insects And Plant Diseases?
You can find similar books in the "Read Also" column, or choose other free books by William Bradford Alwood to read onlineMoreLess
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