IL24181A - Preparations for seed dressing containing isothiocyanates - Google Patents

Description

invention oonoerned with preparations for seed dressing having a aotion with the It known that a number of isothiooyanates have biooidal in described the nematodiooidal aotion of and According to Patent Specifications 540 and United States Patent Specification are also suitable for combating The fungicidal and of some of hese mentioned substanoee has also been desoribed that case there oonoerned an agent having a aotion and a spectrum herbioidal The bacteriostatic aotivity of hiooyanate has described in Canadian Specification of isothlooyanate has been deseribed Japanese Patent Specification as a for of despite their good biooidal it has suggested been to use the isothiooyanates as seed dressings because powerful of other disadvantageous physical The present invention is primarily based on observation tha hiooyanates of general formula R 0 in which represents or are eminently sui table for use as seed The preparations of which inolude a as speoi together with an inert a very epeoial advantage to in that they it possible to dispense substances or dressings as is have substantial owing to the toxicity of the outstanding aeed dressing action the preparations of the invention is shown by followi g which serve to illustrate the Test 1 This test illustrates the excellent fungicidal action of upon Fusarium seeds naturally infeoted with Fusarium nivalo were separately either treated h the preparation of the invention or with a meroury dressing or left seeds were then sown in in pots and the plants reared for months in a cool room at 7 to in The degree to which the rye plants were infeoted Fuaarium ni ale was assessed during the period of the test and expressed as a based on the degree of infeotlon of untreated Effeot on Fusarium nlvale cool house test Preparation ml preparation relative infection per control 100 1 Utre solution in xylene with dry 100 g dressing with 200 Control 0 Test test illustrates the powerful aotioh of when used as a seed seeds naturally infeoted with separately either treated with the preparation of the invention or a dressing or left The seeds were then disposed on The degree of myoelium growth emanating the was assessed a 4 inoubatlon at and expressed as a based on the degree of growt observed on the untreated control Effect Fusarium in laboratory tes Preparation preparation mycelium growth per 100 kg 200 litre 14 isothiooyanate solution in xylene with emulsifier 200 g 36 dressing with eh Test 3 test likewise illustrates the powerful fungicidal action o used as seed Wheat seeds were artificially infeoted tritioi by adding the spores to the seeds and agitating grams of spores per kilogram of The seeds were separately either troated with the preparation of the invention or with a mercur dressing or left The seeds were a oool room at In eao of the seeds removed after 3 days and remainder were removed afte a further The average degree of germination of the tr spores remaining in the holes by the seeds was assessed a ter a E oot on Tilletia tritioi in laboratory test Preparation ml preparation Degree of per 100 kg seed germination of spores in after 10 days 80 litre solution in xylene with 80 13 dressing with Control 100 4 test illustrates the powerful fungicidal aotion off when used as seed dressing for grain unde field Test were artificially with T by adding the spores to the and agitating grams of spores per of were eeparately treated the preparation of the invention with a meroury purpose dressing and left The seeds were then under field The ears infeoted with Tilletia tritioi were counted at the time of Barley seeds naturally infeoted with dressing and left The seeds were then under normal field the infected with enae were fungicidal of enate when used as a seed dressing for grain under field conditions Preparation ml preparation Uatilago per 100 kg seed avenae on on winter barley of infeoted stalks paniolea par 100 ml litre solution in xylene wit as dry dressing s dry 300 g dressing with 150 0 75 s Control oan be for by eacting the corresponding amine with and can be by reacting the corresponding ammonium salt of with a chloroformlo acid The active substances can be applied in any of the forma normally used in est for in the of spreading solutions or in the presence of liquid or solid inert carriers also in the of wetting Suitable for organic solvents talcum for and aoid can be used either alone or admixture one with A suitable wetting for sodium it is also possible to use the active substances in admixture ticidal preparation can known for example by mixing the active substance with or dissolving it in the mentioned if neoessary with the aid of a mixing following Examples illustrate a number of possible Example active substance xylene eaulslfier mixture alkylaryl sulphonates and fatty aoid polyglyool Example g active substance 85 talcum 3 substance talcum insufficientOCRQuality

Claims (1)

1. What we claim let Seed dressing pr4parations for fungicidal which preparations contain as active component a oompound of the general formula in which E represents or in admixture an inert mere solutions of the compounds being Seed dressing preparations as claimed in substantially as desoribed in anyone of the Examples method of immunising seed wherein the grain is treated with a preparation containing as active component a compound of the general formula C in whioh represents or Λ method as in claim substantially as described herein with reference to any one of Tests 1 grain when immunised by the method olaira 3 or insufficientOCRQuality