Last edited by Nera
Tuesday, August 4, 2020 | History

1 edition of Kill of pink bollworms in the cotton gin and the oil mill found in the catalog.

Kill of pink bollworms in the cotton gin and the oil mill

by O. T. Robertson

  • 71 Want to read
  • 14 Currently reading

Published by U.S. Dept. of Agriculture, in cooperation with the Texas Agricultural Experiment Station in Washington, D.C .
Written in English

    Subjects:
  • Control,
  • Cotton,
  • Pink bollworm,
  • Cotton gins and ginning,
  • Diseases and pests

  • Edition Notes

    Statementby O.T. Robertson, V.L. Stedronsky, and D.H. Currie
    SeriesProduction research report -- no. 26
    ContributionsStedronsky, Victor L. (Victor Leo), 1908-, Currie, D. H. (Dennis H.), 1903-
    The Physical Object
    Pagination22 p. :
    Number of Pages22
    ID Numbers
    Open LibraryOL26308314M
    OCLC/WorldCa16416006

    United States first occurred in Texas cotton in At present, the pink bollworm has been recorded in nearly all cotton-growing countries of the world and is a key pest in many of these areas. Existing tactics for achieving a high degree of suppression of estab-lished pink bollworm populations are well advanced and feasible on a field-by. And it mostly occurs in the top layer of soil beneath cotton plants. It is brown n colour and about one-half inch long. It does not feed or move during this period of about seven to eight days. Adult. Adult pink bollworms are brown to grey moths and are approximately one-half inch long. They emerge from pupae in male to female ratio.

    Cotton Bollworms are an invasive pest that destroys the bolls, the rounded seed capsule, of cotton. The adult form of these pests, a large cream-colored moth, lay their eggs on the leaves and of the cotton plant. These eggs, which are also cream colored but turn a darker brown, are about the size of a [ ]. Cotton. Cotton suffers from a number of major insect pests like, bollworms, sucking pests, and leaf-eating caterpillars. Therefore, management becomes tedious as pests are associated with the crop till harvest. The farmers spray insecticides, approximately 10 rounds in rain-fed cotton and 20 rounds of insecticide in irrigated cotton in India.

    This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.   MULTAN: About one million cotton bales get affected every year due to pink bollworms in the country and farmers should pay focus on the elimination pink bollworm. According to assistant director agriculture information Naveed Asmat Kohloon, the pink bollworm is a highly dangerous pest for cotton which complete its life in remains of cotton.


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Kill of pink bollworms in the cotton gin and the oil mill by O. T. Robertson Download PDF EPUB FB2

The following is substantially the authors' summary. Investigations were carried out ua the United States in to determine the mortality of resting larvae of Pectinophora gossypiella (Saund.) resulting from cotton-gin and oil-mill processes and, if possible, to find ways of increasing it.

Associated tests dealt with the kill caused by delinting and hot-water treatment of cottonseed Cited by: 2. Kill of pink bollworms in the cotton gin and the oil mill. Washington, D.C.: U.S. Dept. of Agriculture, in cooperation with the Texas Agricultural Experiment Station, (OCoLC) Kill of pink bollworms in the cotton gin and the oil mill / By O.

(Oris T.) Robertson, D. (Dennis H.) Currie and Victor L. (Victor Leo) Stedronsky Abstract. Since cotton is used for fiber and seed oil, the damage is twofold. Their disruption of the protective tissue around the boll is a portal of entry for other insects and fungi.

In parts of India, the pink bollworm is now resistant to first generation transgenic Bt cotton (Bollgard cotton) that expresses a single Bt gene (Cry1Ac). Cotton is a major market for pesticide use in the United States. More than 90% of the entire cotton acreage in the United States is treated with insecticides.

Insecticide costs for cotton bollworm, tobacco budworm, and pink bollworm usually average around 60–70% of the total pesticide costs to American cotton growers. A recently developed transgenic cotton, Bollguard II, offers suppression of cotton bollworm, along with beet armyworms, pink bollworm, and tobacco budworm.

Eliminate the food supply for pink bollworm by cutting off irrigation early enough to. A cotton gin – meaning "cotton engine" – is a machine that quickly and easily separates cotton fibers from their seeds, enabling much greater productivity than manual cotton separation.

The fibers are then processed into various cotton goods such as calico, while any undamaged cotton is used largely for textiles like separated seeds may be used to grow more cotton. the gin in the seed cotton will be removed before they reach the gin stand.

Those not killed by the seed cotton cleaning machinery will be shunted alive. Maharashtra’s cotton crop, which has completed nearly 60 days after sowing, is already showing signs of a pink bollworm attack.

Although the severity is yet to be known, cotton farmers in the. Mean SE percentage of (A) free adult or (B) encapsulated boll weevils recovered alive from kg of seed cotton subsamples after passage through one or two tower dryers in the gin.

Even now, the pest can be eradicated from some localities if all cottongrowers in an infested area cooperate in the pro- 10 BN— IX Machinery in a modern cotton gin kills pink bollworms by impact during the ginning operation.

gram. Practices to bring about eradication may vary in different lo- calities. Bollworm, any larvae of various moths (order Lepidoptera), including the pink bollworm (Pectinophora gossypiella, family Gelechiidae) and some Helicoverpa species. While these larvae are mostly known for the damage they inflict on cotton bolls, a variety of plants are attacked by bollworms, including peas, alfalfa, beans, soybeans, flax, peanuts, and other commercial crops.

The pink bollworm (Pectinophora gossypiella; Spanish: lagarta rosada) is an insect known for being a pest in cotton farming. The adult is a small, thin, gray moth with fringed wings. The larva is a dull white caterpillar with eight pairs of legs with conspicuous pink banding along its dorsum.

The larva reaches one half inch in length. Cotton is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus Gossypium in the mallow family fiber is almost pure natural conditions, the cotton bolls will increase the dispersal of the seeds.

The plant is a shrub native to tropical and subtropical regions around the world, including the. WASHINGTON, Oct. 19, — U.S. Secretary of Agriculture Sonny Perdue announced today that U.S. cotton is free — after more than years — of the devastating pink bollworm.

This pest has cost U.S. producers tens of millions of dollars in yearly control costs and yield losses. Thanks to rigorous control and regulatory activities carried out by the U.S. Other articles where Pink bollworm is discussed: gelechiid moth: The pink bollworm (Pectinophora gossypiella) is one of the most destructive pests of cotton.

Though probably native to India, it is now distributed worldwide. It bores into cotton bolls, devouring blossoms and seeds. The pinkish-coloured larva generally pupates in a cocoon inside a boll or seed.

Since cotton plant is grown on soil it is also vulnerable to as many species of insects. Among them bollworms are major insect pests and among bollworms, pink bollworm has become a notorious pest. In cotton crop the pink bollworm infestation is reported to loss more than 50% for crop.

Pink bollworm is distributed all over the country. The Pink Bollworm, Bt Cotton and Paradoxes of Indian Governance. How the government has dealt with the crisis among cotton farmers. Boll Weevil Survival through Minimum and Enhanced Seed Cotton Cleaning Processes.

For each replication of each treatment, free adult boll weevils were marked with fluorescent powder, briefly chilled to prevent flight, and distributed as evenly as possible into kg lots of stripper-harvested seed cotton spread along a m conveyor belt.

The pink bollworm infestation on cotton crops has crossed the “economic threshold limit” (ETL) in some parts of Maharashtra.

The insect has hit the crop mainly in Akola, Parbhani, Nanded and. Work now being undertaken in California to develop the biological control of the pink bollworm [Pectinophora gossypiella (Saund.)] of cotton is described.

This includes laboratory studies on rearing the moth and its parasites (including Chelonus curvimaculatus Cam. and Bracon kirkpatricki (Wlkn.), originally from East Africa).

On the basis of circumstantial evidence, the .Description of the Pest. Cotton bollworm moths are about inch long, with a wing span of 1 to inches. Eggs are spherical, flattened, with 10 to 15 perpendicular rows of toothed ribs. Newly hatched, first-instar larvae have several rows of dark tubercles along the back, each bearing one or two bristles.

Larvae range from olive green to dark reddish brown in color and can be best. 5. Who invented the cotton gin and when? Eli Whitney, in 6. Where was cotton first known to be grown in the U.S. and by whom? The Spaniards first grew cotton in Florida.

7. Who invented the first U.S. cotton mill? Samuel Slater 8. What are cotton locks called after removal from the cotton bur? Seed cotton 9.