Insecticides on single seeds treated with liquid dressings

Jeffs, K. A.; Lord, K. A.; Tuppen, R. J.

doi:10.1002/jsfa.2740190406

Cited by 10 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under certain conditions control is adequate but rarely complete. Damage has often been worse than expected due to late drilling, drought, prolonged winters or very heavy attacks or to inadequate retention of the powder or liquid dressing on the seed (Lord et al, 1967;Jeffs et al, 1968). Griffiths et al (1970) have greatly improved the accuracy of assessing insecticidal efficiency by measuring the amounts of active ingredient on seed samples and correlating this with subsequent control.…”

Section: Introductionmentioning

confidence: 99%

Chemical Control of Wheat Bulb Fly in the East Midlands, 1968–70

Mathias

Roberts²

1973

Plant Pathology

View full text Add to dashboard Cite

SUMMARY Under severe infestation pressure and delayed emergence following mid‐October drilling, only dieldrin seed dressing gave an acceptable control of wheat bulb fly, Leptohylemyia coarctata (Fall.). The control afforded by commercial seed dressings of BHC, carbopheno‐thion, chlorfenvinphos, ethion and the experimental compounds GS 13006 and pirimiphos‐ethyl, and by chlorfenvinphos granules was markedly inferior to that obtained with dieldrin seed dressing. In short‐row screening trials, bendiocarb, C 10015, C 18244, carbo‐furan, dialifor, ethoprop, iodofenphos, methiocarb, ‘Phosvel’, PPC‐3, propoxur and RD 21192 showed little promise. Phoxim and pirimiphos‐ethyl showed some promise but were not sufficiently active to warrant further study. Special seed dressing formulations of ‘Dursban’ did not overcome the inherent phytotoxicity of the compound to germinating wheat seed.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical Control of Wheat Bulb Fly in the East Midlands, 1968–70

Mathias

Roberts²

1973

Plant Pathology

View full text Add to dashboard Cite

show abstract

“…Fungicide was added to the seeds when dry. The amounts of ethion on single seeds were estimated by the method of Jeffs et al (1968).…”

Section: Procedures For Special Formulationsmentioning

confidence: 99%

“…For comparison, some seeds were pre-treated with water (0-6 ml/100 g seed) before adding y-BHC, and others were treated with liquid parafiSn but received no insecticide. The amounts of y-BHC retained by sin^e seeds and by 5 g samples of seed were estimated by the method of Jeffs et al (1968).…”

Section: Procedures For Special Formulationsmentioning

confidence: 99%

Repellents, Synthetic Pyrethroids, and Organophosphorus Compounds as Seed Dresangs against Wheat Bulb Fly (Leptohylemyia coarctata (Fall.)

et al. 1974

Self Cite

View full text Add to dashboard Cite

New insecticides, some in novel formulations, and insect repellents were tested during 1968-71 as seed dressings to protect winter wheat against attack by wheat bulb fly larvae. Preliminary tests in the laboratory were followed by trials in fields in the Midlands and eastern England. The synthetic pyrethroid insecticide resmethrin at one per cent active ingredient to weight of seed significantly decreased attack by wheat bulb fly in one trial on a sandy clay loam but not on other soils or in other years. The best protection against attack in the field was given by the organophosphorus insecticides C8874 (O,O-diethyl C>-2,5-dichJoro-4iodophenyl thiophosphate) and C18244 (d-ethyl-O-(2,5-dichloro-4-î odbphenyl) ethyJ thiophosphohate). These compounds were more eflective than chlorfenvinphos used as a standard but are unlikely to"be developed further in this country.Using polyvinyl acetate formulations, much larger eimounts of pyrethroids could be applied to the seeds without decreasing plant emergence, but insect control was not improved. Pre-treatment with liquid parafi&n, 'Lutanol M40' (polyviny! methyl ether) or 'Polyvis 200' (polybutene) improved adhesion of 7-BHC powder to seed, but effects •nplarit emergence and oH insect control need more testing. A uniform seed to seed distribution of liquid insecticide was obtained by dipping seeds in dilute emulsions of ethion, but these seeds germinated less well than seeds treated with a commercial powder formulation of the same insecticide.

show abstract

“…Seed dressings of y-BHC have been approved since 1958 to protect winter wheat from attack by wheat bulb fly {Leptohylemyia coarctata (Fall.)). Recent analyses (Lord et al, 1967;Jeffs, Lord and Tuppen, 1968) showed that seeds often carry less insecticide than intended, so earlier results with y-BHC seed dressings are difficult to interpret because the amounts of active ingredient on the seeds were not necessarily those presumed. Six experiments were done, therefore, to get information about the effects on wheat and insecticidal efliciency of known amounts of y-BHC checked by gas liquid chromatography (G.L.C.).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Known Amounts of γ‐BHC and Organophosphorus Seed Dressings on Growth of Wheat Seedlings and on Attack by Larvae of Wheat Bulb Fly (Leptohylemyia coarctata (Fall.))

et al. 1970

View full text Add to dashboard Cite

SUMMARY Six trials were done during three years (1966–69) in eastern England to study how known amounts of insecticidal seed dressings affect the growth of winter wheat and the severity of attack by wheat bulb fly larvae. In the first two years γ‐BHC dry dressing was applied to seeds previously treated with a liquid organomercury fungicide, but in the third year seeds were dressed with powders containing fungicide mixed with the insecticides γ‐BHC, chlorfenvinphos or ethion. Analysis using gas liquid chromatography showed that the ethion+ fungicide dressing stuck to the seeds much better than the chlorfenvinphos+fungicide dressing or either formulation of γ‐BHC. Some ethion, γ‐BHC and chlorfenvinphos later fell off the seeds, the exact amount depending on the method of drilling. Small amounts of insecticide, less than about 10μg/seed of γ‐BHC or less than about 15μg/seed of the organophosphorus compounds, were ineffective against wheat bulb fly. Increasing amounts of all three insecticides progressively decreased the percentage of damaged shoots and the percentage of plants with live larvae, but more of the organophosphorus insecticides, especially of ethion, was generally needed to give the same protection as γ‐BHC. No seed treatment damaged seedlings in trials on peaty loams or sandy clay loams, but seeds dressed with the standard amount of liquid organomercury fungicide and several different amounts of γ‐BHC dry dressing germinated poorly in the sandy loam soils.

show abstract

Insecticides on single seeds treated with liquid dressings

Cited by 10 publications

References 1 publication

Chemical Control of Wheat Bulb Fly in the East Midlands, 1968–70

Chemical Control of Wheat Bulb Fly in the East Midlands, 1968–70

Repellents, Synthetic Pyrethroids, and Organophosphorus Compounds as Seed Dresangs against Wheat Bulb Fly (Leptohylemyia coarctata (Fall.)

The Effects of Known Amounts of γ‐BHC and Organophosphorus Seed Dressings on Growth of Wheat Seedlings and on Attack by Larvae of Wheat Bulb Fly (Leptohylemyia coarctata (Fall.))

Contact Info

Product

Resources

About