Plant protecting and regulating compositions – Plant growth regulating compositions – Plural active ingredients
Patent
1998-09-03
2000-05-16
Clardy, S. Mark
Plant protecting and regulating compositions
Plant growth regulating compositions
Plural active ingredients
A01N 3722, A01N 4310, A01N 4380
Patent
active
060637323
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a novel herbicidal synergistic composition that comprises a combination of herbicides suitable for selectively controlling weeds in crops of cultivated plants, typically in crops of cereals, maize, rice, rape, sugar beer, sugar cane, plantations, cotton and soybeans.
The invention further relates to a process for controlling weeds in crops of cultivated plants and to the use of said novel composition therefor. ##STR2## wherein R.sub.1 is the ##STR3## have herbicidal activity, as is disclosed, inter alia, in U.S. Pat. No. 5,002,606 and U.S. Pat. No. 5,457,085.
The following compound of formula II ##STR4## is also known as herbicide, inter alia from BRIGHTON CROP PROTECTION CONFERENCE--Weeds--1995, Proceedings Volume 1, pages 35-42. Synergistic mixtures of compounds of formula II with the racemates of formula I are disclosed in WO 96/03877.
Surprisingly, it has now been found that a variable amount of a combination of two active ingredients, i.e. of an active ingredient of formula I with an active ingredient of formula II exerts a synergistic effect that is able to control the majority of weeds preferably occurring in crops of cultivated plants preemergence as well as postemergence, without substantial injury to the cultivated plants.
Accordingly, this invention proposes a novel synergistic composition for selectively controlling weeds, which comprises, in addition to conventional inert formulation assistants, as active ingredient on the one hand a compound of formula I ##STR5## wherein R.sub.1 is the ##STR6## and, on the other hand, a synergistically effective amount of the active ingredient of formula II ##STR7## in admixture with each other.
The compounds of formula I are the optical isomers aRS,1'S(-)-N-(1'-methyl-2'-methoxyethyl)-N-chloroacetyl-2-ethyl-6-methylan iline and (1S,aRS)-2-chloro-N-(2,4-dimethyl-3-thienyl)-N-(2-methoxy-1-methylethyl)ac etamide.
It is highly surprising that the combination of an active ingredient of formula I with an active ingredient of formula II has a greater additive action against the weeds to be controlled than to be expected in principle and thus enhances the activity range of both active ingredients in particular in two respects:
On the one hand, the rates of application of the single compounds I and II are reduced while the effectiveness of said compounds is retained. On the other hand, the novel combination also achieves a high degree of weed control where the single compounds have become no longer agriculturally effective at low rates of application. The consequence is a substantial broadening of the activity spectrum against weeds and an additional increase in the selectivity for the cultivated plants that is necessary and desirable in the event of unintentional overapplication of herbicide. Furthermore, the novel composition permits more flexibility in subsequent crops while retaining the excellent control of weeds in cultivated plants.
The novel herbicidal compositions can be used against a great number of agriculturally important weeds, including Stellaria, Agrostis, Digitaria, Avena, Setaria, Sinapis, Lolium, Solanum, Echinochloa, Scirpus, Monochoria, Sagittaria, Bromus, Alopecurus, Sorghum halepense, Rottboellia, Cyperus, Abutilon, Sida, Xanthium, Amaranthus, Chenopodium, Ipomoea, Chrysanthemum, Galium, Viola and Veronica.
The novel compositions are suitable for all standard methods of application used in agriculture, typically preemergence application, postemergence application and seed dressing.
The novel herbicidal combination is preferably suitable for weed control in crops of cultivated plants, typically cereals, rape, sugar beet, sugar cane, plantains, rice, maize and soybeans as well as for non-selective weed control. The novel combination is preferably used in maize and soybeans.
Crops will be understood as meaning also those crops that have been made tolerant to herbicides or classes of herbicides by conventional breeding or genetic engineering methods.
The novel herbicidal combination contains the active ingredient of
REFERENCES:
patent: 5002606 (1991-03-01), Moser et al.
patent: 5457085 (1995-10-01), Seckinger et al.
patent: 5556828 (1996-09-01), Glock et al.
Research Disclosure, No. 372, Elmsworth, GB, pp. 271 and 271,XP000509081, "Neue Herbizide Mittle" (in German), (1995).
Luscombe, B.M. et al., Brighton Crop Protection Conference--Weeds, vol. 1, pp. 35-42 (1995).
The Pesticide Manual, 10th Ed. pp. 345-346.
Chemical Abstracts, vol. 97, No. 9, abstract No. 71671, dated Aug. 30, 1982.
Worthing, C.R. (Editor), The Pesticide Manual, 9th Edition, p. 61, 1991.
Clardy S. Mark
Fishman Irving M.
Morris Michael P.
Novartis Crop Protection, Inc.
Teoli, Jr. William A.
LandOfFree
Herbicidal synergistic composition and method of weed control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Herbicidal synergistic composition and method of weed control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Herbicidal synergistic composition and method of weed control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-258739