Plant protecting and regulating compositions – Plant growth regulating compositions – Plural active ingredients
Patent
1997-03-24
1998-03-03
Clardy, S. Mark
Plant protecting and regulating compositions
Plant growth regulating compositions
Plural active ingredients
504282, A01N 4318, A01N 4356
Patent
active
057234086
DESCRIPTION:
BRIEF SUMMARY
This application has been filed under 35 USC 371 as a national stage application of PCT/JP95/02180, filed Jun. 27, 1995.
TECHNICAL FIELD
The present invention relates to a herbicide composition containing pyrazole derivative.
TECHNICAL BACKGROUND
Herbicides are very important chemicals for saving weed-controlling labors and improving the yield of agricultural and horticultural crops and have been therefore aggressively studied and developed for many years, and a diversity of herbicides have now been put to practical use. However, it cannot be said that herbicides which have been so far developed have broad herbicidal spectra, and at present there are an increasing number of weeds which are difficult to control. Herbicides having broad herbicidal spectra are therefore desired. For overcoming the environmental pollution problem of conventional herbicides, further, there are desired herbicides which are effective at a further decreased dosage.
The present inventors already found that a variety of pyrazole derivatives in which a thiochroman ring is bonded to a pyrazole ring through a carbonyl group is free from damaging gramineous upland crops but can control gramineous weeds and broad-leaved weeds together at a low dosage by any one of soil treatment and foliar treatment, and filed patent applications directed to these pyrazole derivatives and herbicides containing these as active ingredients. Of these patent applications, some have been already laid-open as International Laid-open Patent Publications Nos. WO95/04054, WO93/18031, WO94/01431 and WO95/13275. Japanese Patent Applications Nos. 6-237981, 7-80059 and 7-158842 have not yet been laid-open.
Those pyrazole derivatives disclosed in the above International Laid-open Patent Publications and Japanese Patent Applications can control gramineous weeds and broad-leaved weeds together at a low dosage by any one of soil treatment and foliar treatment, while there is desired a herbicide which can control a broad range of gramineous weeds and broad-leaved weeds at a further decreased dosage.
It is therefore an object of the present invention to provide herbicide compositions which can control a broad range of gramineous weeds and broad-leaved weeds at a very low dosage without damaging crops such as corn, etc., by using the pyrazole derivatives disclosed in the International Laid-open Patent Publications and the above Japanese Patent Applications in combination with other herbicide compounds.
The present inventors have made diligent studies to achieve the above object, and as a result have found that when a pyrazole derivative of the following general formula (I) described in the above International Laid-open Patent Publications and Japanese Patent Applications (to be sometimes referred to as "pyrazole derivative (I)" hereinafter) and a specific herbicide compound are used in combination, a broad range of gramineous weeds and broad-leaved weeds can be controlled at a very low dosage by synergistic effects of the pyrazole derivative (I) and the said specific herbicide compound without damaging crops such as corn, etc. The present invention has been accordingly completed.
DISCLOSURE OF THE INVENTION
The gist of the present invention is a herbicide composition containing, as active ingredients, a pyrazole derivative of the general formula (I), ##STR2## {wherein: R.sup.1 is a C.sub.1 .about.C.sub.4 alkyl group, a C.sub.2 .about.C.sub.4 alkenyl group or a C.sub.2 .about.C.sub.4 haloalkeny group, .about.C.sub.4 haloalkyl group or a C.sub.2 .about.C.sub.4 alkoxyalkyl group, haloalkyl group, a C.sub.2 .about.C.sub.4 alkoxyalkyl group, a halogen atom, a C.sub.1 .about.C.sub.4 alkoxy group or a C.sub.1 .about.C.sub.4 haloalkoxy group, atom, a C.sub.1 .about.C.sub.4 alkyl group, a C.sub.1 .about.C.sub.4 haloalkyl group or a C.sub.2 .about.C.sub.4, alkoxyalkyl group, ##STR3## (in which each of R.sup.7 and R.sup.8 is independently a hydrogen atom or a C.sub.1 .about.C.sub.4, alkyl group), and cycloalkyl group or a group of ##STR4## (in which Y is a C.sub.1 .about.C.su
REFERENCES:
Shibata et al. CA 12:164162b. Abstract of PCT Application WO 93/18,031. 16 Sep. 1993.
Nasuno et al. CA 120:245092f. Abstract of PCT Application WO 94/01,431. 20 Jan. 1994.
Koike Kazuyoshi
Nakamura Kazufumi
Nasuno Ichiro
Shibata Mitsuru
Yoshikawa Misako
Clardy S. Mark
Idemitsu Kosan Co. Ltd.
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