SU701626A1 - Herbicidal composition - Google Patents

Description

(54) HERBICIDE STRUCTURE

I

The invention relates to chemical means for controlling weeds in crops of cultivated plants, namely, to herbicidal compositions, with a synergistic mixture of chemical compounds as an active substance.

Herbidide formulations based on simm-triazine derivatives are known. Prometrin (2-methylthio-4,6-bisChizoprpylamino) -symm-triazine) is currently widely used. He especially ef | Stephen against annual weeds. Polyolefin films containing prometrin or a mixture of it with 1,1-dimethyl-3- (3,4-dichlorophenyl) urea 2} are recommended to destroy weeds.

Also known is the herbicidal composition based on a mixture of nromethrin and 3-chlorophenylcarbamic acid 3-isopronyl ester.

Prometrin is used in crops of potatoes, onions, carrots, dill and other

cultures. However, in doses that are effective for weed infestation, the plants cause damage to cultivated plants.

In addition, as most of the derivatives of symriazine, prometrin slowly decomposes in the soil and thereby pollutes the environment.

The aim of the present invention is to obtain a new herbicidal composition based on prometrin, which has an increased herbicidal activity and greater selectiveness of action.

This goal is achieved by the use of a mixture of prometrin formulas - as an active ingredient of the composition.

(CH3) jHNHUjfl-NHClHUH3) 2

and ammonium nitrate (), 3 COOT HOI, iin, and the combopept of Gorbptsilio composition of the following, weight „% .; PrometrynOj02.ljO Nitrate am MOSH1Y2 -50 Water Ostadnoe (up to 10O% Prometry is taken in the form of wetted powder, the consumption of working solution is 200 6 CO l / ha. The working solution is prepared before treatment as ammonium nitrate 5 is added water jipoNfeTpHH is added to the solution, and the solution is increased to a predetermined volume (or weight). The use of this mixture is carried out before the emergence of crop growths that germinated by this time are almost the hardest of all)) the ect is reached at and Using the proposed mixture in dry weather when there is no rain for 2-3 hours after processing, At the planting of potatoes, nroved processing is performed 1-5% before the appearance of cultivated plants, By the time the potato seedlings emerge, the main part of annual weeds grows co. b, which are completely destroyed by prometrin in combination with ammonium nitrate. In the future, timely npoBeneiose between successive cultivations with spud plants will ensure the purity of the crops until the end of the growing season. In the crops of carrots, the treatment of fruit is 1-3 days before the appearance of seedlings. Virtually all annual weeds, all of the shots that have appeared, are destroyed by time. The dosages of prometrin are reduced by a factor of time. “Vtori :) the processing of the crops is carried out in the phase of true carrot leaves using nromethrin in ordinary doses, in the same way as the CIM, the total dosimetricine metrin is reduced by 25--4%, Dill and Parsley is treated in the same way as carrots and seeds in prometrin onion crops mixed with ammonium nitrate are also applied 1-3 days prior to the 1st of the seedlings of the cultivated plants. The seedlings of one-year-old weeds are almost annihilated; Prometrin in doses of O, 25-O, 5O kg / ha in d, c, (active substance) does not produce an otidatel 6-4 jioio / gi on the seedlings of the onion, even when displacing the herbicide with the soil surface in the upper part of the arable layer shortly after the application of LRI / seams or precipitation. EXAMPLE 1. The treatment of the steam field was carried out to study the water of prometrin and ammonium nitrate with a combined effect on weeds. Weeds were mainly represented by white, white, rough, radish, and moorite plants. Scherennye plants had 4 to the time of treatment. in the real; The results are presented in Table 1. The interaction of irometry and ammonium nitrate has the character of sharply pronounced synergism. The combined use of Hei-promethrin at a dose of 0.75 kg / ha with ammonium nitrate (75 kg / ha) provided the same effect as in the variant where prometrin was used at the usual dose (2 kg / ha with.) Example 2 Potato crops were treated for 1-2 days before the emergence of cultivated plants. Potatoes were clogged mainly with lice, white maria, rough mountaineer, field mustard, radish and chamomile odorless. Weed plants were in the phase of seed leaves at the time of processing - one true leaf. Combined use of Prometrin at doses of 0.25 - O, 50 kg / ha in ai. and ammonium phosphorus (1OO-150 kg / ha) provided almost complete suppression of weeds in potato crops. Approximately the same ssi) ect was obtained in the variant where lrome rin was used in the usual dosage (2 kg / ha in d.c.). Prometrin in OsS jaVra dose in d, c. mixed with ammonium nitrate (150 kg / ha) completely destroyed an odorless chamomile that is highly resistant to the specified ger-. The interaction of prometrin and ammonium nitrate has the character of sharply expressed synergism. The oppression of the guns of the assault plants is not t); ffloM of the variants is not marked. Example 3. The processing of carrot crops was carried out 2-3 days before the appearance of seedlings of cultivated plants. Crops were clogged mainly with white marigold, woodfly, shero / mute mountaineers, and windweed. Weeds were treated in flOJLbHbix leaves, one ip micron. The results are presented in table. 3 Joint npHMeFiGnne with a dose of 0.25 kg / ha along the ae. ensured the death of over 98% of weeds. And in this case, the interaction between prometrippe and ammonium nitrate had the character of well-pronounced synergism. Negative1 and cultivated plants were not noted in any of the options. Example 4. The processing of onion-seed crops was visited at MosienT for the appearance of single shoots of cultivated grass. The crops were littered mainly with wild radish, field mustard, white mary, mountaineer rough and woodlice. By the time of treatment, weeds were in the seed phase of the long leaves of the first true leaf. The results are presented in table. 4 The combined use of prometrin at a dose of 0.25 kg / ha in dV, and ammonium nitrate (50 kg / ha) provided the suppression of more than 96% of weeds. Inhibition of cultivated plants was not observed. Prometrin in the usual dose (2 kg / ha for the loc.) Call 1892

1873

1835

1735

1663

639

577 501 833 402 322 251 542 16 О 7

ABOUT

1.1 3.1 3.3 12.2 66.3 69.6 73.6 56.0 78.8 83, O 86.8 71.4 91.6 I1 (ghib) Rui1is i-, onion growth, G1 p and measures 5, Obrpbotku i; ocoi or, 7 uk-cherkushki for 1-2 days before nosiixjiCiinn seedlings are cultured, 1x plants, Sowing were clogged npeMNtymeCTBenHO mario white, mountainous rough, weftG. chamomile and odorless 1p 1 th tenacious. By the time of treatment, the weeds were in-4 out of the seed leaves, the first true leaf. The results are presented in mpl 5. Combined use of prometriyl in a dose of 0.25 icr / ra, willow. and ha of a tratl-ammonia (50-75 KiVra) provided gi. over 95% weeds are harvested. The chamomile is odorless and in this case it was more silmya. But comparing with the variant where iipoNsorfiHn was applied in the usual dose (2 logs,). With a joint NPHNOHOHUH) MOi-plI on ammonium nitrate, the inhibition of cultivated plants was not observed. In where prometrin was used at a dose of 2 itr / ra according to DV, its strong toxic effect on the bow was observed. Table 1

Table 3

about

ABOUT

 7 l

Oh oh

Table 5

about

ABOUT

about

ABOUT

WITH)

10.3

. -Vrf ;, 4.ff,

 t-f- -K «f-, ..- SD /„ LG2)

eleven

Claims (3)

1. Melnikov I., N., Baskakov Yu. A., Chemistry of herbicides and plant growth regulators, Goskhimizdat, M., 1962, with. 674 (prototype). 2. Patent Yapo1-shi No. 20936, class, 2 B1, published. 1972, 3. Author’s own design; CCCL No. 491364. CL, A 01 N 9/02, 1974.