Ishihara Sangyo Kaisha, Ltd.

Ryu Yamada

Takashi Terada

Hiroyuki Okamoto

Hiroshi Yoshii

Hiroshi Kikugawa

Yoshiaki Ishihara

Tatsuhiko Tsuruta

Tomoaki Kezuka

Yoshikazu Satake

Toshihiko Ueki

Hisaki Tanaka

Ema Mitsuno

Mitsuru Endo

Yoshifumi Saito

Ken Ohno

A novel herbicide having remarkable herbicidal activities against undesired plants is provided. A pyridazinone compound represented by the formula (I) or its salt: wherein X is &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;SO&#x2014;, &#x2014;SO&#x2014; or &#x2014;N(Y)&#x2014;; Q is monocyclic aryl which may be substituted by Z, monocyclic heteroaryl which may be substituted by Z or the like; Y is a hydrogen atom or alkyl; Z is halogen, alkyl or the like; Ris alkyl, alkenyl or the like; Ris a hydrogen atom, alkyl or the like; Ris halogen, hydroxy or the like; Ris a hydrogen atom, alkyl or the like; and n is an integer of from 0 to 4.

Pyridazinone compound or its salt, and herbicide containing it

At present, various herbicidal compositions have been developed and use, but there are a variety of types of weeds to be controlled, and their development lasts for a long period of time. Thus, a herbicidal composition having a broad herbicidal spectrum, having high activity and having a long-lasting effect has been desired. The present invention relates to a herbicidal composition comprising (a) nicosulfuron or its salt and (b) S-metolachlor or its salt. According to the present invention, a herbicidal composition having a broad herbicidal spectrum, having high activity and having a long-lasting effect can be provided.

Herbicidal composition comprising nicosulfuron or its salt and S -metolachlor or its salt

To provide a highly active herbicidal composition to control undesired plants by synergistic herbicidal effects. The present invention provides a herbicidal composition comprising (A) metobromuron or its salt, and (B) at least one herbicidal compound selected from the group consisting of chlorpropham, S-metolachlor, flufenacet, pyroxasulfone, nicosulfuron, fluazifop-P-butyl, prometryn, ioxynil, pendimethalin, trifluralin, prosulfocarb, thiobencarb and indanofan, or its alkyl ester or its salt; and a herbicidal method of using it.

Herbicidal composition

To provide a high active herbicidal composition to control undesired plants represented by weeds to be controlled. A herbicidal composition comprising tiafenacil or its salt and flazasulfuron or its salt.

Herbicide composition

To provide a herbicidal composition which has a high herbicidal effect against undesired plants while stably maintaining the safety for useful plants, independently of various conditions such as weather conditions, soil conditions, varieties of the crop plants, and the timing for the application of the herbicide. A herbicidal composition comprising (1) 1-(1-ethyl-4-(3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)benzoyl)-1H-pyrazol-5-yloxy)ethyl methyl carbonate or its salt and (2) at least one compound selected from the group consisting of fenchlorazole-ethyl, isoxadifen-ethyl, mefenpyr-diethyl, cloquintocet-mexyl and cyprosulfamide.

Herbicidal composition having improved plant safety

Many herbicidal compositions have been developed and are presently used. However, weeds to be controlled are various in types and their emergence extends over a long period. Accordingly, it is desired to develop a herbicidal composition which has a broad herbicidal spectrum, a high activity and a long-lasting effect. The present invention provides a herbicidal composition comprising (A) flazasulfuron or its salt and (B) at least one protoporphyrinogen oxidase inhibitor selected from the group consisting of a phenylpyrazole compound, a triazolinone compound, a N-phenylphthalimide compound, a pyrimidindione compound, an oxadiazole compound, an oxazolidinedione compound, a thiadiazole compound, pyraclonil, profluazol, flufenpyr-ethyl and their salts. According to the present invention, a herbicidal composition which has a broad herbicidal spectrum, a high activity and a long-lasting effect can be provided.

Herbicidal composition comprising flazasulfuron and an inhibitor of protoporphyrinogen oxidase

To provide a high active herbicidal composition having a broad herbicidal spectrum. A herbicidal composition comprising (a) nicosulfuron or its salt, (b) prosulfuron or its salt and (c) at least one herbicidal compound selected from the group consisting of mesotrione, bicyclopyrone, dicamba, dicamba ester, bromoxynil, bromoxynil ester and their salts.

Herbicidal composition comprising nicosulfuron or its salt and S-metolachlor or its salt

In order to reduce the environmental load on an area where a herbicide is applied or a surrounding area thereof more than ever, it has been required to improve activity of a herbicidal active ingredient and to reduce its dose as far as possible. A herbicidal composition comprising (1) a benzoylpyrazole compound represented by the formula (I) or its salt: wherein each of Q, R, R, R, R, R, Rand A is as defined in the specification, and (2) at least one compound selected from the group consisting of a polyoxyalkylene sorbitan fatty acid ester, a polyoxyalkylene fatty acid ester, a polyoxyalkylene styryl aryl ether, a polyoxyalkylene styryl aryl ether condensate and a polyoxyalkylene alkyl ether sulfate.

Herbicidal composition having improved herbicidal activity

To provide a high active herbicidal composition having a broader herbicidal spectrum against a wide variety of weeds to be controlled. A herbicidal composition comprising (a) nicosulfuron or its salt, (b) dimethenamid-P or its salt and (c) topramezone or its salt. This herbicidal composition has a wide herbicidal spectrum and has high activity.

At present, many herbicidal compositions have been developed and used, but they are not necessarily sufficient to control undesired plants such as weeds to be controlled in some cases, and a herbicidal composition having high activity has been desired. A herbicidal composition comprising flazasulfuron or its salt, and at least one herbicidal compound selected from the group consisting of imazapic, hexazinone, mesotrione and their salts, and a method for controlling undesired plants using it.

At present, a large number of herbicidal compositions have been developed and used. However, weeds to be controlled include a lot of kinds, and the emergence thereof extends over a long period of time. Therefore, the appearance of a herbicidal composition having a broad weed spectrum and having a high activity and a long residual effect is desired. The present invention relates to a synergistic herbicidal composition comprising (A) at least one member selected from the group consisting of flazasulfuron, nicosulfuron, and their salts and (B) pyroxasulfone or its salt. According to the synergistic herbicidal composition of the present invention, a herbicidal composition having a broad weed spectrum and having a high activity and a long residual effect can be provided.

To provide a high active herbicidal composition having a broad herbicidal spectrum. A herbicidal composition comprising synergistically effective amounts of (A) pyridate or its salt and (B) at least one sulfonylurea compound selected from the group consisting of flazasuifuron, nicosulfuron, trifioxysulfuron, chlorimuron and its alkyl ester, halosulfuron and its alkyl ester, and their salts.

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Kusatsu, Japan

Ryu Yamada