Symptoms of Disease in Plants
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In our eReader you can find the full English version of the book. Read Symptoms of Disease in Plants 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 Symptoms of Disease in Plants
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— Leaves of the cork-winged elm showing abundant scab spots (Gnomonia nlmea ) . x 2. Orioinal.
or less circular or slightly irregular spots of a nuirked yellow color. In such cases the disease is generally characterized as a "leaf-spot.'' Symp- toms of this kind may be noted in the leaf-spots of tbe oak and violet, and in the antJiracnose of cucumbers and melons. Sometimes the change in color becomes more general, and the whole leaf turns yellow and falls from the tree as in the early summer st...age of apple scab.
Another marked symptom of disease is the occurrence of red or orange i:^ijiit [itdiiifi of Disease in /'hi ills 15 sjiots or [lustulc's. The "Ihists" of our cereals and otlier crops received their name from the fact that in the early stage of the attack, reddish or brownish spore-producing- pustules give the stems or leaves a rusty ap- pearance. Sometimes these rust spots may l)e few in miiiihcr, at other times so numerous that almost the entire surface of leaf or stem is cov- ered, and thus the vigor and productiveness of the crop is seriously im- paired.
What to read after Symptoms of Disease in Plants?
You can find similar books in the "Read Also" column, or choose other free books by Heald, F. D. (Frederick De Forest), B. 1872 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
— Leaves of the cork-winged elm showing abundant scab spots (Gnomonia nlmea ) . x 2. Orioinal.
or less circular or slightly irregular spots of a nuirked yellow color. In such cases the disease is generally characterized as a "leaf-spot.'' Symp- toms of this kind may be noted in the leaf-spots of tbe oak and violet, and in the antJiracnose of cucumbers and melons. Sometimes the change in color becomes more general, and the whole leaf turns yellow and falls from the tree as in the early summer st...age of apple scab.
Another marked symptom of disease is the occurrence of red or orange i:^ijiit [itdiiifi of Disease in /'hi ills 15 sjiots or [lustulc's. The "Ihists" of our cereals and otlier crops received their name from the fact that in the early stage of the attack, reddish or brownish spore-producing- pustules give the stems or leaves a rusty ap- pearance. Sometimes these rust spots may l)e few in miiiihcr, at other times so numerous that almost the entire surface of leaf or stem is cov- ered, and thus the vigor and productiveness of the crop is seriously im- paired.
What to read after Symptoms of Disease in Plants?
You can find similar books in the "Read Also" column, or choose other free books by Heald, F. D. (Frederick De Forest), B. 1872 to read onlineMoreLess
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