Report of the Wellcome Tropical Research Laboratories At the Gordon Memorial College, Khartoum
Report of the Wellcome Tropical Research Laboratories At the Gordon Memorial College, Khartoum
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The acacia arabica (sant tree) is liable to be attacked by a scale insect Avhich forms little white balls on the tAvigs. Specimens of tliis and of all the Aphides ha\'e been sent to Mr. Theobald. The acacia insects were given me by Mrs. Broun, the Honorary Secretary of the Museum Board. She had collected them on tlie White Nile.
The Aphis has formed tlie subject of several reports to tlie Secretary-General, but it is evident that in a country like tlie Sudan it is very difficult to employ suita...ble preventive methods. Xo doubt petroleum, naphthalene and quassia Avashes combating the and sprays are effective, but they have to be properly and judiciously applied, T^'sT" ^^^ ^^ many cases spraying apparatus Avould be required. Burning of infected grain would be beneficial, the planting of the castor-oil plant round the fields is said to be useful, and something might be accomplished by merely squirting water through a hose on the plants and thus washing off the insects, but the outlook is scarcely hopeful in this direction.
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To quickly assess the difficulty of the text, read a short excerpt:
The acacia arabica (sant tree) is liable to be attacked by a scale insect Avhich forms little white balls on the tAvigs. Specimens of tliis and of all the Aphides ha\'e been sent to Mr. Theobald. The acacia insects were given me by Mrs. Broun, the Honorary Secretary of the Museum Board. She had collected them on tlie White Nile.
The Aphis has formed tlie subject of several reports to tlie Secretary-General, but it is evident that in a country like tlie Sudan it is very difficult to employ suita...ble preventive methods. Xo doubt petroleum, naphthalene and quassia Avashes combating the and sprays are effective, but they have to be properly and judiciously applied, T^'sT" ^^^ ^^ many cases spraying apparatus Avould be required. Burning of infected grain would be beneficial, the planting of the castor-oil plant round the fields is said to be useful, and something might be accomplished by merely squirting water through a hose on the plants and thus washing off the insects, but the outlook is scarcely hopeful in this direction.
What to read after Report of the Wellcome Tropical Research Laboratories At the Gordon Memorial College, Khartoum?
You can find similar books in the "Read Also" column, or choose other free books by Wellcome Tropical Research Laboratories to read onlineMoreLess
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