Seed Dressings for the Control of Wheat Bulb Fly

Gough, H. C.; Woods, Albert F.

doi:10.1038/1741151b0

Cited by 19 publications

(15 citation statements)

References 5 publications

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“…GLC values of insecticide retention indicated that neither of these insecticides exhibited any substantial systemic action, thus confirming the results obtained by . This contrasts with the organochlorine seed dressing dieldrin, which was thought to cause a high rate of larval mortality within the shoot due to systemic action (Gough and Woods, 1954).…”

Section: Resultsmentioning

confidence: 95%

“…It is concluded from the present work that control of adult wheat bulb fly populations by means of insecticidal seed dressings on wheat crops in the previous year is unlikely to be a practical method with the new organophosphorus insecticides. Little is known of the effectiveness of organochlorine insecticides as a means of decreasing the number of pupae formed, but Gough and Woods (1954) suggested that dieldrin caused a high rate of larval mortality.…”

Section: Resultsmentioning

confidence: 99%

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The Use of Insecticidal Seed Dressings as a Means of Decreasing a Population of Wheat Bulh Fly (Leptohylemyia coarctata(Fall.))

Dixon¹,

Rogerson²

1972

Plant Pathology

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SUMMARY An attempt was made in 1968 to reduce a wheat bulb fly population in a field in northern England by means of insecticidal seed dressings on early and late‐sown winter wheat. Ethion seed dressing reduced plant and shoot attack and also decreased the number of larvae within the plants on the late‐sown plots but not on the early‐sown. Chlorfenvin‐ phos seed dressing had no significant effect on either sowing. It is concluded that the control of wheat bulb fly populations by the use of these seed dressings on wheat crops in the previous year is not a promising means of control.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

The Use of Insecticidal Seed Dressings as a Means of Decreasing a Population of Wheat Bulh Fly (Leptohylemyia coarctata(Fall.))

Dixon¹,

Rogerson²

1972

Plant Pathology

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“…Dieldrin and y-BHC seed-dressings have been used for more than 10 years to control wheat bulb fly. Results of many trials have shown that y-BHC acts mainly by preventing larvae entering the plants and kills few larvae that succeed in entering, whereas dieldrin acts mainly by killing larvae after they enter (Gough & Woods, 1954;Bardner, 1958;Way, 1959;Maskell & Gair, 1961 ;Gough, Woods, Maskell & Towler, 1961). Both materials are less effective in organic soils than in mineral soils (Gough et al, 1961.…”

Section: Introductionmentioning

confidence: 99%

Persistence and distribution of insecticidal seed‐dressings for control of the wheat bulb fly, Leptohylemyia coarctata

Lord

Scott

Jeffs

et al. 1967

Annals of Applied Biology

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S U M M A R YSamples of plants and soil from two experimental sites, one clay loam and one peaty loam, were analysed chemically to try to explain differing results with y B H C and dieldrin seed-dressings applied to control wheat bulb fly on different soil types, and to suggest reasons for patchy plant stands and occasional failure to control the pest. Seed dressed with dieldrin yielded more than untreated seed on both sites, whereas seed treated with y-BHC yielded as much as seed treated with dieldrin on the clay site, but it yielded less than untreated seed on peat. The chemical analyses showed that the poor performance of y-BHC on the peat site could not be explained by its failure to persist, because the soil still contained considerable quantities of y-BHC at the time of insect attack. Possible reasons may be sorption of the poison by organic matter making it less available, and deeper sowing, permitting larvae to reach the plants without prolonged contact with the insecticide.Bayer 381 56 (0-ethyl S-p-tolyl ethyl phosphonodithioate) and trichloronate (0-ethyl O-z,4,5-trichlorophenyl ethyl phosphonothionate) persisted in soil long enough and were sufficiently toxic to wheat bulb fly to suggest that organophosphorus compounds might provide alternatives to chlorinated hydrocarbon insecticides for control of the fly.Analyses made on seeds dressed at the laboratory for the experiment showed that the amounts of insecticide on seeds were smaller than expected and that the amounts on individual seeds differed greatly. Of ten samples of seeds dressed commercially with y-BHC, three carried very little insecticide, and the variations in the other seven samples were greater than with experimentally applied dressings.

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“…However dieldrin and most dosages of carbophenothion failed to decrease the percentage damaged shoots significantly at Semer and at Rothamsted. This result with dieldrin is to be expected because dieldrin is only partly effective in preventing larvae entering the plants, acting mainly by killing larvae after they have entered (Gough and Woods, 1954). Carbophenothion, however, acts principally by preventing larvae entering the plants and its failure to do so at Semer and Rothamsted was disappointing.…”

Section: Short-row Trials 1972-73mentioning

confidence: 98%

Relationships between Control of Wheat Bulb Fly (Leptohylemyia coarctata (Fall.)) and Amounts of Dieldrin, Carbophenothion and Chlorfenvinphos on Treated Seed

et al. 1976

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Trials were done in eastern England in 1972-74 to study relationships between control of wheat bulb fly larvae and amounts of insecticide on treated seed. Carbophenothion in short-row trials in 1972-73 was relatively ineffective even at the largest dose, 100 ju,g/seed. Chlorfenvinphos at low dosages did not significantly decrease the percentage of plants with live larvae but was increasingly effective as the dos.age increased. Dieldrin decreased the percentage of plants with live larvae even at small dosages, .about 10 /xg/seed. Clilorfenvinphos was further studied in larger plots (c. 0-01 ha) in 1973-74. Plant examinations confirmed results of the previous year but large yield increases were obtained at only two of four sites, one with the greatest plant attack (55 per cent damaged shoots) and the other with the latest sowing date (22 November).

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Seed Dressings for the Control of Wheat Bulb Fly

Cited by 19 publications

References 5 publications

The Use of Insecticidal Seed Dressings as a Means of Decreasing a Population of Wheat Bulh Fly (Leptohylemyia coarctata(Fall.))

The Use of Insecticidal Seed Dressings as a Means of Decreasing a Population of Wheat Bulh Fly (Leptohylemyia coarctata(Fall.))

Persistence and distribution of insecticidal seed‐dressings for control of the wheat bulb fly, Leptohylemyia coarctata

Relationships between Control of Wheat Bulb Fly (Leptohylemyia coarctata (Fall.)) and Amounts of Dieldrin, Carbophenothion and Chlorfenvinphos on Treated Seed

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