DE1567156C3 - - Google Patents

Description

Active ingredient g active ingredient /
100 kg of seeds Relative
Snow mold
infestation
of rye 25th
l-methoxy-2-amino-
ethane
untreated control 375 10
100

30th

CH ₁ O-CH ₂ -CH ₂

NH,

avoid these disadvantages.

The agents according to the invention are, for. B. very effective against cereal diseases of the species Fusarium, Tilletia, Helminthosporium, and Ustilago, among others. and surpass TMTD in this regard. This effect could not be predicted. In addition, l-methoxy-2-aminoethane is inconsistent with that for mercury Active ingredients have a characteristic toxicity risk, which is a particular advantage as nowadays there are higher toxicity requirements for agents used in agriculture be asked.

The agents according to the invention can be used alone or as a mixture with other crop protection agents, e.g. B. Insecticides. The active ingredient is known per se and can be prepared according to methods known per se getting produced.

It is expediently used in a dry manner customary for seed treatment compositions or liquid form with the addition of solid and / or liquid diluents or carriers and optionally of adhesives, wetting agents, emulsifying agents and / or dispersing agents.

The proportion of the active ingredient in the mean can expediently be 10 to 75 percent by weight, in particular 25 to 50 percent by weight of the agent. The exact concentration of the active ingredient used for the product depends mainly on the amount in which the agent used to treat the seed should be.

The following examples show the excellent action of the agents according to the invention against parasitic fungi on seeds. The active ingredient was used as a 20 ° / "strength emulsion or solution or as a 50 ° / ₀ Trockenbeize strength.

Example 2

Effect against wheat stone brandy (Tilletia caries)
Test method:

After artificial infection by shaking with 3 g of wheat stone brandy spores (Tilletia caries) pro 1 kg of seeds of untreated wheat or wheat treated according to the table was sown outdoors. At harvest time the ears affected by the wheat stone fire were counted.

Test results

Active ingredient g active ingredient /
100 kg of seeds Number of from
Stone fire
infected ears
in % l-methoxy-2-amino-
ethane
untreated control 250 0.3
72.7

Example 3

Effect against streak disease on barley
(Helminthosporium gramineum)

Test method:

Barley seed with natural infestation by streak disease (Helminthosporium gramineum) was sown untreated or treated in accordance with the table. After the lap the streaked stalks counted.

Test results Active ingredient g active ingredient /
100 kg of seeds number of
strip sick
Straws
in % l-methoxy-2-amino-
ethane
untreated control Well
375 0
14.7

infested panicles counted. Three attempts were made.

Test results

Example4

Effect against fire blight on oats
(Ustilago avenae)

Test method:

Oat seeds with natural flight blight (Ustilago avenae) were additionally processed using the vacuum-wet method (PURDY, 1958, Plant Dis. Reptr., P. 233-237) artificially infected. Untreated or according to Tables of treated oats were sown in the field. At the time of harvest they were caught by the flight fire

Active ingredient g active ingredient /
100 kg of seeds An2
I.
befa
1 -ablder
Hugbrai
len B
in"/"
Try
2 from the
id
jspen
1
3 l-methoxy-2-amino-
ethane 563
600
400 2.8
10.8
23.7 1.67
7.78
10.28
18.39 0 TMTD 1.74 untreated
control

The above findings show both the good ao effectiveness of the agents according to the invention against Grain diseases as well as their superiority over the known comparison agent.

Claims (1)

Claim: Seed treatment agent, labeled by a content of l-methoxy-2-aminoethane. 15th The invention relates to fungicidal seed treatment compositions containing l-methoxy-2-aminoethane. For the control of parasitic fungi on the seeds, see in practice. predominantly containing mercury Use of active ingredients or universal stains, which, however, have the disadvantage of high toxicity. Organic Fungicides such as B. Tetramethylthiuramdisulfid (TMTD), have a contrast Significantly lower toxicity, but not always have a satisfactory effect. It has now been found that seed treatment agents containing l-methoxy-2-aminoethane as active ingredient the formula example 1 Effect against snow mold on rye
(Fusarium nivale) Test method: Rye seeds with natural infestation by snow mold (Fusarium nivale) were untreated or After the treatments given in the table, sown in clay pots with unsterile soil and put in the refrigerator at 7 to 12 ° C daily for 14 hours under artificial lighting for 2 months. While The snow mold infestation of the rye plants was rated over the duration of the experiment. The respective infestation is given as a relative value (untreated control = 100). Test results