SU507964A1 - Herbicide - Google Patents

Description

(54) HERBICID

boaryloxy-N-arylhydroxylamines, sow the seeds of test plants: wheat, oats, radish and vetch, which are grown in lighted cabinets with temperature control at 25 ° С (+ 1 ° С) for 6 days.

The control plants are those grown on an agar-agar medium that does not contain preparations. Herbicidal activity is determined by measuring the length of sprouts and plant roots.

On the basis of relative indicators, the dose is determined, which inhibits plant growth by 50% compared with the control (see Table 1).

PRI mme R 2. Tests of herbicidal activity in greenhouse conditions are carried out according to the following procedure: Test plants: quinoa, buckwheat, lettuce, mustard, beans, sugar beet are treated with drugs in a dose of 1-2 kg / ha during the growing season. when the plants are in the phase of 2-3 leaves. Daily visually note the effect of drugs. Accounting for the wet weight of the plants is carried out 14 days after the treatment, the herbicidal action is assessed according to the tiballic system: 5-maximum action, O-absence of the herbicidal action. The results are shown in Table 2;

EXAMPLE 3 Similarly, but using sugar beet and quinoa as test plants, compounds of the general formula T are tested in which X ,, and R are respectively: ZLSS.

c, 4-ce ,, n, s, n, 5- / Ie,

All tested compounds in a dose of 2-4 kg / ha almost completely destroy the quinoa and do not damage the sugar beet,

PRI me R 4 Field experience. The site’s weediness averages about 6 million, units per hectare of weeds, crops are clogged with, of course, upturned (84%), weeds are also present: chicken millet (5%), ambrosia polypvolifolia (3%), weeds of the family crucifers (3%), white and white (2%), ternate hibiscus (0.3%),

During the treatment with herbicides (IM), the sugar beet was in phase 1, and a pair of true leaves, a schiritsa was thrown back — in phase 2-3, real leaves, chicken millet — in phase 2-4 leaves, ambrosis polynoliflora, marwhite and cruciferous weeds in the phase of 2-4 true leaves, terbed hibiscus - 1-2 true leaves.

Counting the density of one hundred sugar beets was carried out on special seeding bands without manual weeding and inter-row treatments. The results of the experiments are given in table., 3,

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Claims (1)

с Claims of the invention: Herbicide, which is an industrial N-carboxyloxy-N-arylhydroxylamine derivative of the general formula where X is hydrogen, chlorine, nitro, methyl; - alkyl with 1-4 carbon atoms, aryl; -n is an integer 1 or 2.