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Herbicide composition

A herbicidal composition and composition technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve problems such as unsatisfactory effects, and achieve faster onset of herbicide effects and long-lasting control effects , good safety effect

Inactive Publication Date: 2008-10-29
JIANGSU HUIFENG BIO AGRI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not ideal for some broad-leaved weeds that are common in corn fields, such as cocklebur, purslane, field bindweed, etc.

Method used

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  • Herbicide composition
  • Herbicide composition

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment

[0025] 1), wettable powder

[0026] With 40 parts by weight of the active ingredient mixture (14 parts by weight of nicosulfuron+21 parts by weight of mesotrione+15 parts by weight of bromoxynil), 4 parts by weight of carboxymethylcellulose, 13 parts by weight of Open powder (alkyl naphthalene sulfonate), 2 parts by weight of bis-naphthalene sulfonate formaldehyde condensate, 41 parts by weight of light calcium carbonate are mixed, and the powder is ultrafinely pulverized to make the powder meet the fineness requirement, and a double-helix type Mixer and coulter mixer are mixed several times to make the product mix evenly, so as to make the dosage form.

[0027] 2), water dispersible granules

[0028] With 51 parts by weight of the active ingredient mixture (3 parts by weight of nicosulfuron+9 parts by weight of mesotrione+39 parts by weight of bromoxynil), 4 parts by weight of polyvinyl alcohol, 3 parts by weight of saponin, 5 parts by weight of methyl cellulose, 37 parts b...

Embodiment 1、2

[0031] B, indoor activity assay (utilize preparation embodiment 1,2 to measure the indoor toxicity assay of purslane)

[0032] Plant purslane in pots indoors until the cotyledons are fully unfolded and a true leaf grows, and then used for chemical treatment. After 10 days of spraying, count the survival number and death number of purslane in each treatment, and calculate the mortality rate. Calculate the virulence regression formula and LC of embodiment 1, 2 with probability value method 50 value. Calculate co-toxicity coefficient by Sun Yunpei's method, determine whether there is synergism between embodiment 1, 2 and single agent. (The co-toxicity coefficient is less than 80 and shows that there is an antagonistic effect between the components; greater than 80 shows that there is an additive effect between the components; greater than 120 shows that there is a synergistic effect between the components), the test results are as follows (Table 1) .

[0033]

m...

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Abstract

The invention relates to a weedicide composite preparation for preventing and removing farmland weeds, in particular to a weedicde used for preventing and removing grassy weeds and broadleaf weeds in corn fields. The weedicide composite is a ternary weedicide mixture of active components of mesotrione, nicosulfuron and bromoxynil (or the salt of bromoxynil), wherein, the weight ratio between the mesotrione, the nicosulfuron and the bromoxynil (or the salt of the bromoxynil) is 1 to 50: 1 to 50: 1 to 50. The preventing effect of the composite is superior to the activity of weedicide by using exclusively, and unexpected synergism is obtained by combination; moreover, the weedicide composite has the positive influence in widening weed preventing and treating scope, reducing weedicide applying time, and decreasing weedicide applying cost, which is safe for the growth of corn in culture and after crops.

Description

technical field [0001] The present invention relates to a herbicidal composition with improved performance, in particular to a herbicidal composition for effectively controlling gramineous weeds and broadleaf weeds in corn fields. Background technique [0002] Nicosulfuron is a sulfonylurea herbicide mainly used to control grassy weeds and broadleaf weeds in corn fields. Nicosulfuron is a systemic conduction herbicide, which can be absorbed by the stems, leaves and roots of plants and conduct rapidly. By inhibiting the activity of acetolactate synthase in plants, it prevents the synthesis of branched-chain amino acids, leucine and isoleucine This in turn prevents cell division and causes sensitive plants to stop growing. Symptoms of weed damage are yellowing, chlorosis, and albinism of the heart leaves, and then other leaves turn yellow from top to bottom. It has a good control effect on annual weeds before the 4-leaf stage and perennial weeds before the 5-leaf stage. Mes...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01P13/00A01N41/10A01N37/34
Inventor 仲汉根韦广权季自珍季红进陈新中
Owner JIANGSU HUIFENG BIO AGRI CO LTD
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