Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
  • C07C271/06—Esters of carbamic acids

Definitions

• This invention concerns an agent with an increased effect against phosphoric ester-resistant mites, particularly phytoparasitic spider mites.
• mites (Acarina), and particularly spider mites, (Tetranychidae), become resistant to chemical agents which are used for their control.
• This resistance is built up by agents particularly on the basis of phosphoric esters, which belong to the best known and most effectiveacaricides. It was disconcerting that such resistance of the pests is directed not only against the active substance used, but against all other active substances which belong to the same class of compounds. Beyond that, a resistance is also observed against active substances of other compound classes provided they display their resistance, just like the resistance-causing active substance, apparently due to the inhibition of the cholinesterase enzyme in the animal body.
• the agent according to the invention can be used per se in conjunction with other pest control agents, such as acaricides, insecticides or fungicides. Its preparation is effected in a manner customary for plaut-protectives, using liquid or solid vehicles. Suitable liquid vehicles are, in addition to water, mineral oils or solvents; solid vehicles are, for example, bentonite, bleaching earth, gypsum, lime, kieselguhr, pyprophylite, silicon dioxide, talcum, or flours of vegetable origin, such as from cotton seeds or nut shells.
• the preparations may contain additives, such as emulsifiers, wetting agents, binders, stabilizers, propellant gases, odoriferous substances, attractants or repellents.
• the agents can be used among others as atomizable or sprayable substances, such as suspensions, emulsion or solutions.
• the active substance as mentioned above, is known in itself and can be produced according to methods known in the art.
• the active substance to be used according to the invention can be applied as such and/ or in the form of its salts with inorganic or organic acids, for example, the watersoluble hydrochlorides.
• the content of active substance in the various preparations can vary within wide limits. It depends, among others, on the type of formulation and on the application method and amounts to about 0.1 to by weight of the agent. As mentioned above, lower concentrations than usual are sufficient for the control of phosphoric esterresistant mites. For example, 2 g. of active substance per liter spray broth can be used as can be seen from Example 3, an increase up to 10 g. active substance per 100 liter spray broth already including the safety margin customary in practice.
• EXAMPLE 1 The following table contains the LC values (lethal concentration with 50% mortality) which were obtained for female spider mites by means of the leaf piece method.
• spider mites were used (a) a normal sensitivity laboratory strain of the greenhouse spider mite (T e-tranychus urticae Koch): N; (b) a general phosphoric-ester resistant strain of the carnation spider mite (Tetranychus dinathica Dosse): SR; (c) a resistant strain obtained by selection with 0,0- dimethyl-S-Z- (ethyl-sulfinyl) -ethyl thiophosphate: MR.
• EXAMPLE 2 In this table, the LC values are compiled which are obtained in the treatment of fresh-laid spider mite eggs by killing the larvae emerging from the eggs (ovolarvicidal effect). To this end, female spider mites were placed on leaf pieces and left there for 24 hours to lay their eggs.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7435254

Family Applications (1)

Country Status (12)

Citations (1)

• 1966
  • 1966-09-30 DE DE19661567167 patent/DE1567167A1/de active Pending
• 1967
  • 1967-07-16 IL IL28319A patent/IL28319A/xx unknown
  • 1967-08-07 GB GB36093/67A patent/GB1195412A/en not_active Expired
  • 1967-08-28 BR BR192488/67A patent/BR6792488D0/pt unknown
  • 1967-09-04 CH CH1235567A patent/CH486839A/de not_active IP Right Cessation
  • 1967-09-08 ES ES344879A patent/ES344879A1/es not_active Expired
  • 1967-09-18 AT AT850867A patent/AT276856B/de not_active IP Right Cessation
  • 1967-09-26 US US670794A patent/US3502778A/en not_active Expired - Lifetime
  • 1967-09-27 NL NL6713144A patent/NL6713144A/xx unknown
  • 1967-09-29 BE BE704488D patent/BE704488A/xx not_active IP Right Cessation
• 1971
  • 1971-09-14 CY CY60771A patent/CY607A/xx unknown
  • 1971-12-31 MY MY1971213A patent/MY7100213A/xx unknown

Patent Citations (1)

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