Insects Injurious to the Hop in New York, With Special Reference to the Hop Grub And the Hop Redbug ..
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If the underside of such a leaf is examined, silken webs will ho found and beneath these the mites usually rest. Later the leaves turn yellow and a few drop off. The lower leaves are first attacked, and as the.se leaves are killed the mites move upward and some enter the hops.
A few mites were fourul in the hops of on(; yard in the dry summer of 1913.
CONTROL It has never been necessary to adopt control measures against the red spider in New York hopyai'ds. In 1913 a few hills were sprayed with... flour paste (8-100), and others with Ume-sulfur (1-80) and flour paste (4-100), as recomuKuided by Parker (1913, a and b) in conseciuence of his work on the Pacific coast. The action of both materials was satis- factory, but, as neither spray kills the eggs and since only one ajiplica- tion was made, mites were present a few weeks later. Not all the mites were killed, as the mist spray which was used did not always penetrate the webs to the mites beneath. If desirable, flour paste or lime-sulfur may be applied in combination with the Black-leaf-lO used for control of the hop aphis.
What to read after Insects Injurious to the Hop in New York, With Special Reference to the Hop Grub And the Hop Redbug ..?
You can find similar books in the "Read Also" column, or choose other free books by Hawley, Ira Myron, 1884- [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If the underside of such a leaf is examined, silken webs will ho found and beneath these the mites usually rest. Later the leaves turn yellow and a few drop off. The lower leaves are first attacked, and as the.se leaves are killed the mites move upward and some enter the hops.
A few mites were fourul in the hops of on(; yard in the dry summer of 1913.
CONTROL It has never been necessary to adopt control measures against the red spider in New York hopyai'ds. In 1913 a few hills were sprayed with... flour paste (8-100), and others with Ume-sulfur (1-80) and flour paste (4-100), as recomuKuided by Parker (1913, a and b) in conseciuence of his work on the Pacific coast. The action of both materials was satis- factory, but, as neither spray kills the eggs and since only one ajiplica- tion was made, mites were present a few weeks later. Not all the mites were killed, as the mist spray which was used did not always penetrate the webs to the mites beneath. If desirable, flour paste or lime-sulfur may be applied in combination with the Black-leaf-lO used for control of the hop aphis.
What to read after Insects Injurious to the Hop in New York, With Special Reference to the Hop Grub And the Hop Redbug ..?
You can find similar books in the "Read Also" column, or choose other free books by Hawley, Ira Myron, 1884- [from Old Catalog] to read onlineMoreLess
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