Corn field weeding composition with synergistic effect
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A herbicidal composition and a synergistic technology, applied in the field of pesticides, to achieve the effects of reducing the cost of medication, rapidly exerting the efficacy of the drug, and reducing the dosage
Inactive Publication Date: 2014-05-07
GUANGDONG ZHONGXUN AGRI TECH
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Abstract
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Problems solved by technology
[0010] The purpose of the present invention is to solve the shortcomings of single or dual use of herbicides, and provide a herbicidal composition that can effectively control weeds in cornfields
Method used
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Embodiment 1
[0023] Example 1: Indoor toxicity determination of chlorpyrazosulfuron, nicosulfuron, bromoxynil and their compounds on crabgrass, barnyardgrass, Cyperus cyperi, and amaranth
[0024] Table 1. Indoor toxicity test results of clopyrazosulfuron, nicosulfuron, bromoxynil and their compound pair crabgrass.
[0025]
[0026] Table 2. Laboratory toxicity test results of chlorpyrazosulfuron, nicosulfuron, bromoxynil and their compound on barnyardgrass.
[0027]
[0028] Table 3. Indoor toxicity test results of chlorpyrazosulfuron, nicosulfuron, bromoxynil and their compound pair Cyperus.
[0029]
[0030] Table 4. Indoor toxicity test results of chlorpyrazosulfuron, nicosulfuron, bromoxynil and their compound on amaranth.
[0031]
[0032] According to the Colby method to evaluate the combination of herbicides (NY / T 1155.7-2006), the formula is as follows:
[0033] E 0 = A × ...
Embodiment 2
[0042] Embodiment 2: field efficacy test.
[0043] Table five, field efficacy test result of composition of the present invention.
[0044]
[0045] According to the results of the drug efficacy test, it can be known that the ternary compound excipients of clopyrazosulfuron-methyl, nicosulfuron-methyl, and bromoxynil octanoyl are water-dispersible granules, oil suspension concentrates, and suspension concentrates. The control effects of crabgrass, barnyardgrass, Cyperus cyperi, thistle, bindweed, and amaranth are all above 90%.
[0046] To sum up, the composition of the invention is reasonable, has a significant synergistic effect, expands the herbicidal spectrum, and has a good prospect of being developed for weeding in corn fields.
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Abstract
The invention relates to a corn field weeding composition with synergistic effect, which is composed of effective components A, B and C and proper amounts of pesticide adjuvants, wherein the effective component A is halosulfuron-methyl, B is nicosulfuron or rimsulfuron, and C is bromoxynil or bromoxynil octanoate. The weeding composition is reasonable in components, has synergistic effect, overcomes the defects of incomplete weeding spectrum or lower activity for some weed and slow effect taking due to use of single weedicide, and lowers the risk in resistance due to use of single or two-element compounds. The weeding composition has obviously better preventing and treating effects than a single agent, lowers the consumption of the pesticide, and reduces the adverse effect of the pesticide on the ecological environment; and the weeding composition has important meanings for comprehensive treatment of weed resistance, and has huge economic benefit and social benefit.
Description
technical field [0001] The invention belongs to the technical field of pesticides, in particular to a cornfield herbicide composition with synergistic effect. Background technique [0002] Clopyrazosulfuron-methyl is a sulfonylurea systemic agricultural compound, which can be absorbed by the stems, leaves and roots of plants. Weeds stop growing first and then die. It is mainly used to control annual broad-leaved weeds and Cyperaceae weeds. Rhizoma Cyperus has special effects. [0003] Bromoxynil octanoyl is a contact-killing herbicide for selective post-emergence stem and leaf treatment. It is mainly absorbed by leaves and conducts extremely limited conduction in plants. By inhibiting various processes of photosynthesis, including photophosphorylation and electron transfer, In particular, the Hill reaction of photosynthesis causes the rapid necrosis of plant tissues, thereby achieving the purpose of herbicide. When the temperature is high, it accelerates the death of leaves...
Claims
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