Spraying Apples for the Plum Curculio
Spraying Apples for the Plum Curculio
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In our eReader you can find the full English version of the book. Read Spraying Apples for the Plum Curculio 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 Spraying Apples for the Plum Curculio
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In view of this fact it seemed to me important that experiments should be made to determine the amount of poison carried by apples treated with this insecticide within a reasonable limit of time after the spray was applied. I consequently directed, in 1905, the spraying of apple- trees with various arsenical compounds, and among others with the home-made arsenate of lead, and obtained analyses of the peelings of apples so sprayed taken from 2 trees within a day of the applica- tion of the insec...ticide, and from a third tree 2 months thereafter.
The first of these trees, of the Duchess variety, received 2 spray- ings with the arsenate of lead the first June 9 and the second July 4 not having been previously sprayed at all that year. In both these sprayings the insecticide was used at 4 times the common strength 12^2 ounces of acetate of lead and 5 ounces of arsenate of soda to i2 l / 2 gallons of water instead of the usual 50 gallons.
The next day, July 5, six apples, averaging two and a fourth inches in diameter, were carefully picked from this tree by the stem and peeled at once, the apple being held upon the point of one knife while it was peeled with another, to avoid removing any part of the poison unnecessarily.
What to read after Spraying Apples for the Plum Curculio?
You can find similar books in the "Read Also" column, or choose other free books by Stephen Alfred Forbes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In view of this fact it seemed to me important that experiments should be made to determine the amount of poison carried by apples treated with this insecticide within a reasonable limit of time after the spray was applied. I consequently directed, in 1905, the spraying of apple- trees with various arsenical compounds, and among others with the home-made arsenate of lead, and obtained analyses of the peelings of apples so sprayed taken from 2 trees within a day of the applica- tion of the insec...ticide, and from a third tree 2 months thereafter.
The first of these trees, of the Duchess variety, received 2 spray- ings with the arsenate of lead the first June 9 and the second July 4 not having been previously sprayed at all that year. In both these sprayings the insecticide was used at 4 times the common strength 12^2 ounces of acetate of lead and 5 ounces of arsenate of soda to i2 l / 2 gallons of water instead of the usual 50 gallons.
The next day, July 5, six apples, averaging two and a fourth inches in diameter, were carefully picked from this tree by the stem and peeled at once, the apple being held upon the point of one knife while it was peeled with another, to avoid removing any part of the poison unnecessarily.
What to read after Spraying Apples for the Plum Curculio?
You can find similar books in the "Read Also" column, or choose other free books by Stephen Alfred Forbes to read onlineMoreLess
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