专利摘要:
This invention relates to chemical methods of protecting plants. The purpose of the invention is to reduce the phytotoxicity of the method with respect to sorghum plants, pretreatment of seeds with an antidote, a benz / acetonitrile derivative of the formula SbHbS (= L-0-CH2- [SzN502]) (CN) in the amount of 0.75-4 g / kg seed and pre-emergence tillage in sorghum crops with the herbicide -N-
公开号:SU1715187A3
申请号:SU792807710
申请日:1979-08-31
公开日:1992-02-23
发明作者:Щепански Хенри;Мартин Хенри;Фери Вернер;Пассиотас Георг
申请人:Циба-Гейги Аг (Фирма);
IPC主号:
专利说明:

The invention relates to chemical methods of plant protection, specifically to a method of controlling weeds in sorghum crops by treating plants or their bioton with the N- (1-methyl-2-methoxy-methyl) -N (chloroacetyl) -2-ethyl-6- herbicide herbicide. methaniline (metolachlor), and seed treatment with an antidote derivative of methoxyiminobenzyl cyanide.
The purpose of the invention is to reduce the phytotoxicity of the method with respect to sorghum plants.
PRI me R 1. Synthesis of N- (1,3-dioxolan-2-yl-methoxy) -iminobenzoacetonitrile (compound I).
To a suspension of 33.6 g (0.2 mol) of sodium salt-phenylacetonitriloxime in 140 ml of dimethyl sulfoxide was added dropwise with stirring and cooling in an ice-water bath of 33.8 g (0.2 mol) of 2-bromo-methyl-1,3- dioxolane. Then the reaction mixture is stirred for 4 hours at 60-70 ° C, extracted with 600
ml of ether and washed three times with 2% NaOH solution. The ether extract is dried with sodium sulfate, filtered and evaporated. The residue was recrystallized from hexane and 44.1 g (95% of theory) of compound I were obtained as colorless crystals with m.p. 67 ° C.
PRI mme R 2. Antidote activity of compound I.
Sorghum seeds (100 g) and antidote were placed in a glass jar. The vessel is shaken and rotated to ensure good displacement.
In 5-10 days after seed dressing, they are sown in a greenhouse in plastic pots with a diameter of 11 cm or containers 5 cm high (25x17 cm), which are filled with sandy loam. Dose of seeds is 10-20 kg / ha. The surface of the land is then treated with a herbicide by spraying.
Antidote activity is determined 21 days after application of the herbicide. The data presented in the table.
Thus, the proposed method has high efficiency at low consumption rates.
权利要求:
Claims (1)
[1]
Invention Formula
A method for controlling weeds in sorghum crops by pretreatment of seeds with an antidote derived from benzacetonitrile and pre-emergence tillage with the herbicide M- {1-methyl-2-methoxy-ethyl-6-chloroacetyl-2-ethyl-6-methylaniline in a dose
1.5-2.5 kg / ha. different temcht. In order to reduce the phytotoxic effect of the sorghum herbicide, a compound of the formula is used as a benzacetonitrile derivative.
L C-SI.
at II / o
H-0-CH-
0
in the amount of 0.75-4 g / kg seed n.
 Compound A - anhydride, 8-naphthalic acid. Compound B - cysnometaxyminobenzeneetpiitrill
类似技术:
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
CH925278|1978-09-01|LV930416A| LV5650A3|1978-09-01|1993-05-25|Seduction for Sickness in Soros Faces|
LTRP1284A| LT2613B|1978-09-01|1993-09-29|THE FIGHT AGAINST PICTURE FIGHT ON SORG'S PASELS|
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