CH338052A - Preparations for influencing plant growth, in particular for combating weeds - Google Patents
Preparations for influencing plant growth, in particular for combating weedsInfo
- Publication number
- CH338052A CH338052A CH338052DA CH338052A CH 338052 A CH338052 A CH 338052A CH 338052D A CH338052D A CH 338052DA CH 338052 A CH338052 A CH 338052A
- Authority
- CH
- Switzerland
- Prior art keywords
- plant growth
- preparations
- active substance
- combating weeds
- influencing plant
- Prior art date
Links
- 241000196324 Embryophyta Species 0.000 title claims description 12
- 230000008635 plant growth Effects 0.000 title claims description 7
- 238000002360 preparation method Methods 0.000 title description 4
- 239000013543 active substance Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- -1 hydrocarbon radical Chemical class 0.000 description 8
- 239000004480 active ingredient Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000080 wetting agent Substances 0.000 description 4
- GPIQOFWTZXXOOV-UHFFFAOYSA-N 2-chloro-4,6-dimethoxy-1,3,5-triazine Chemical compound COC1=NC(Cl)=NC(OC)=N1 GPIQOFWTZXXOOV-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Natural products CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- PPRMOCUVAWYCTD-UHFFFAOYSA-N 2,4-dibutoxy-6-chloro-1,3,5-triazine Chemical compound CCCCOC1=NC(Cl)=NC(OCCCC)=N1 PPRMOCUVAWYCTD-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000035613 defoliation Effects 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 150000003918 triazines Chemical class 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- NWZSQZIPVJLICE-UHFFFAOYSA-N 2-chloro-4,6-diethoxy-1,3,5-triazine Chemical compound CCOC1=NC(Cl)=NC(OCC)=N1 NWZSQZIPVJLICE-UHFFFAOYSA-N 0.000 description 1
- 244000056139 Brassica cretica Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Natural products CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000005094 fruit set Effects 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 231100000208 phytotoxic Toxicity 0.000 description 1
- 230000000885 phytotoxic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/66—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
Mittel zur Beeinflussung des Pflanzenwachstums, insbesondere zur Bekämpfung von Unkraut Es hat sich überraschenderweise gezeigt, dass Triazine der Formel
EMI0001.0004
worin X und Y Sauerstoff oder Schwefel, n 0 oder 1 und R Wasserstoff oder einen nichtaromatisch gebun denen Kohlenwasserstoffrest bedeuten, bereits in sehr niedriger Konzentration das Wachstum von Pflanzen beeinflussen, insbesondere hemmen oder die Pflanzen abtöten können.
Verbindungen der oben definierten Formel sind durch stufenweise Umsetzung von Cyanurchlorid mit geeigneten Alkoholen oder Mer- captanen leicht herstellbar.
Sie eignen sich vorzüglich als Wirkstoffe für Un krautbekämpfungsmittel, sowohl zur selektiven Ab tötung von Unkräutern unter Kulturpflanzen wie auch zur totalen Abtötung und Verhinderung unerwünsch ten Pflanzenwuchses.
Unter Unkräutern werden hierbei auch un erwünschte, z. B. vorher oder in der Nähe angebaute Kulturpflanzen verstanden. Die oben definierten Verbindungen eignen sich weiterhin auch als Wirk stoffe zur Ausübung anderer hemmender Beeinflus sungen des Pflanzenwachstums, insbesondere Ent- blätterung, Reifebeschleunigung durch vorzeitiges Austrocknen, z. B. von Kartoffelpflanzen, ferner auch Verminderung des Fruchtansatzes, Verzögerung der Blüte, Verlängerung der Ernteperiode und der Lager fähigkeit.
Als Wirkstoffe kommen beispielsweise die nach stehenden zum Teil bekannten, zum Teil neuen Tri- azinderivate in Frage: 2-Chlor-4,6-dimethoxy-s-triazin, F: ?9-80 , 2-Chlor-4,6-diäthoxy-s-triazin, F: 41-43 , und 2-Chlor-4,6-di-n-butoxy-s-triazin, Kpo,1 110-111 .
Gegenstand vorliegenden Patentes ist ein Mittel zur Beeinflussung des Pflanzenwachstums, insbeson dere zur Bekämpfung von Unkraut, dadurch gekenn zeichnet, dass es eine Verbindung der Formel
EMI0001.0025
worin R, X, Y und n die oben angegebene Bedeu tung haben, und einen oberflächenaktiven Stoff ent hält.
Die erfindungsgemässen Mittel können Emulsio nen oder Suspensionen darstellen. Die Anwendungs formen richten sich ganz nach den Verwendungs zwecken, lediglich müssen alle Applikationsformen eine feine Verteilbarkeit der Wirksubstanz gewähr leisten. Zur Herstellung erfindungsgemässer Mittel werden die Substanzen zum Beispiel als solche oder in einem der weiter unten genannten Lösungsmittel mittels oberflächenaktiven Stoffen, wie Netz- oder Dispergiermitteln, in Wasser homogenisiert.
An kationaktiven Emulgier- oder Dispergiermit- teln seien als Beispiele duaternäre Ammoniumver- bindungen genannt, an anionaktiven Emulgiermitteln Seife, Schmierseife, aliphatische langkettige Schwefel säuremonoester, aliphatische oder aromatische Sulfo- säuren, langkettige Alkoxyessigsäuren,
an nichtiono- genen Emulgiermitteln Polyäthylenäther von Fett- alkoholen und Polyäthylenkondensationsprodukte. Anderseits können auch aus Wirkstoff, Emulgator oder Dispergator und eventuell Lösungsmittel be stehende Konzentrate hergestellt werden, die sich zur Verdünnung mit Wasser eignen.
Zur Herstellung von Lösungen der Wirkstoffe mit oberflächenaktiven Stoffen kommen Lösungs mittel, wie insbesondere Alkohole, z. B. Äthyl- oder Isopropylalkohol, Ketone, wie Aceton oder Cyclo- hexanon, aliphatische Kohlenwasserstoffe, wie Kero- sen und cyclische Kohlenwasserstoffe, wie Benzol, Toluol, Xylol, Tetrahydronaphthalin, alkylierte Naphthaline,
ferner chlorierte Kohlenwasserstoffe, wie Tetrachloräthan, Äthylenchlorid und endlich auch mineralische und pflanzliche Öle oder Gemische der obgenannten Stoffe in Frage.
Insbesondere bei der totalen Abtötung von Pflan zenwuchs, bei der vorzeitigen Austrocknung sowie der Entblätterung kann die Wirkung durch die Ver wendung von an sich phytotoxischen organischen Flüssigkeiten, wie z. B. hochsiedenden Mineralöl fraktionen oder Chlorkohlenwasserstoffe, verstärkt werden; anderseits kommt die Selektivität der Wachs tumshemmung bei der Verwendung von gegenüber Pflanzen indifferenten Trägerstoffen, z. B. in der selektiven Unkrautbekämpfung, unter Umständen deutlicher zur Geltung.
Zur Bereitung von Konzentraten .für Suspensio nen kann man auch zunächst pulverförmige Präparate durch Mischen oder gemeinsames Vermahlen von Wirksubstanz mit einem festen Trägerstoff hergestellt werden. Als solche kommen in Frage: Talkum, Diatomeenerde, Kaolin, Bentonit, Calciumkarbonat, Borsäure, Tricalciumphosphat, aber auch Holzmehl, Korkmehl, Kohle und andere Materialien pflanzlicher Herkunft. Anderseits können die Wirksubstanzen auch mittels eines flüchtigen Lösungsmittels auf die Träger stoffe aufgezogen werden.
Durch Kombination mit Netzmitteln und gegebenenfalls Schutzkolloiden wer den hierauf die pulverförmigen Präparate in Wasser suspendierbar und als Spritzmittel verwendbar ge macht. Zu ähnlichen Mitteln gelangt man auch durch Zusatz von Netzmitteln zu Pasten, das heisst Ge mischen von festen Wirkstoffen mit nichtlösenden Flüssigkeiten.
Die verschiedenen Anwendungsformen können in üblicher Weise durch Zusatz von Stoffen, welche die Verteilung, die Haftfestigkeit, die Regenbestän digkeit und eventuell das Eindringungsvermögen ver bessern, wie von z. B. Fettsäuren, Harzen, Leim, Casein oder Alginaten, den Verwendungszwecken näher angepasst werden.
Ebenso lässt sich ihre biolo- eische Wirkung verbreitern durch Zusatz von Stoffen mit bakteriziden, fungiziden oder ebenfalls das Pflan zenwachstum beeinflussenden Eigenschaften sowie von Dünizemitteln. Des weiteren werden folgende Beispiele für typische Applikationsmittel und -formen angeführt. <I>Beispiel I</I> 20 Teile 2-Chlor-4,6-dimethoxy-s-triazin werden mit 70 Teilen fester inerter Trägersubstanz, z. B.
Kaolin, Bentonit, Kreide oder Kieselgur, 7 Teilen eines nichtionogenen Netzmittels, z. B. eines Sehwefel- säureesters eines Alkylpolyglykoläthers, und 3 Teilen Schutzkolloid, z. B. Sulfitablauge, in einer Stiften- Mühle fein vermahlen. Das erhaltene Pulver ist in Wasser suspendierbar und kann zu Spritzmitteln ver arbeitet werden.
0,5 % ige Emulsionen von 2-Chlor-4,6-dimethoxy- s-triazin bewirkten an Senfpflanzen schwere Blatt verbrennungen.
<I>Beispiel 2</I> 5 Teile 2-Chlor-4,6-di-n-butoxy-s-triazin werden in 90 Teilen flüssigen Trägerstoffes, z. B. Trichlor- äthylen, Xylol, Aceton oder Diacetonalkohol, gelöst und mit 5 Teilen eines nichtionogenen Emulgators, z. B. Polyäthylenäther von Fettalkoholen oder Alkyl- phenolpolyglykoläther versetzt. Die Lösung wird im gewünschten Verhältnis mit Wasser vermischt und bildet eine milchige Emulsion.
Means for influencing plant growth, in particular for combating weeds It has surprisingly been found that triazines of the formula
EMI0001.0004
where X and Y are oxygen or sulfur, n is 0 or 1 and R is hydrogen or a non-aromatic-bound hydrocarbon radical, can influence the growth of plants, in particular inhibit or kill the plants, even in very low concentrations.
Compounds of the formula defined above can easily be prepared by the stepwise reaction of cyanuric chloride with suitable alcohols or mercaptans.
They are particularly suitable as active ingredients for weed control agents, both for the selective killing of weeds under cultivated plants and for the total killing and prevention of undesired vegetation.
Weeds are also unwanted, z. B. understood previously or nearby crops grown. The compounds defined above are also suitable as active substances for exercising other inhibitory influences on plant growth, in particular defoliation, acceleration of ripening through premature drying, eg. B. of potato plants, also reduction of the fruit set, delay of flowering, extension of the harvest period and storage ability.
The following triazine derivatives, some of which are known, some of which are new, are suitable as active ingredients: 2-chloro-4,6-dimethoxy-s-triazine, F: 9-80, 2-chloro-4,6-diethoxy -s-triazine, F: 41-43, and 2-chloro-4,6-di-n-butoxy-s-triazine, Kpo, 1 110-111.
The subject of the present patent is a means for influencing plant growth, in particular for combating weeds, characterized in that it is a compound of the formula
EMI0001.0025
wherein R, X, Y and n are as defined above and contain a surfactant.
The agents according to the invention can be emulsions or suspensions. The forms of application depend entirely on the intended use, all the forms of application only have to ensure that the active substance can be finely distributed. To produce agents according to the invention, the substances are, for example, as such or in one of the solvents mentioned below, by means of surface-active substances, such as wetting agents or dispersants, homogenized in water.
Examples of cationic emulsifiers or dispersants are duaternary ammonium compounds;
of non-ionic emulsifiers, polyethylene ethers from fatty alcohols and polyethylene condensation products. On the other hand, concentrates which are suitable for dilution with water can also be prepared from active ingredient, emulsifier or dispersant and possibly solvent.
For the preparation of solutions of the active ingredients with surface-active substances, solvents, such as alcohols in particular, such. B. ethyl or isopropyl alcohol, ketones such as acetone or cyclohexanone, aliphatic hydrocarbons such as kerosene and cyclic hydrocarbons such as benzene, toluene, xylene, tetrahydronaphthalene, alkylated naphthalenes,
also chlorinated hydrocarbons, such as tetrachloroethane, ethylene chloride and, finally, mineral and vegetable oils or mixtures of the above substances.
Especially in the total killing of plants zenwuchs, in the premature dehydration and defoliation, the effect can be achieved through the use of per se phytotoxic organic liquids such. B. high-boiling mineral oil fractions or chlorinated hydrocarbons are reinforced; on the other hand, the selectivity of the growth inhibition comes when using carriers indifferent to plants, eg. B. in selective weed control, may be more evident.
To prepare concentrates, for suspensions, it is also possible first to prepare powdered preparations by mixing or co-grinding the active substance with a solid carrier. These include: talc, diatomaceous earth, kaolin, bentonite, calcium carbonate, boric acid, tricalcium phosphate, but also wood flour, cork flour, coal and other materials of vegetable origin. On the other hand, the active substances can also be absorbed onto the carrier materials by means of a volatile solvent.
By combining them with wetting agents and optionally protective colloids, who then makes the powdered preparations suspendable in water and usable as sprays. Similar agents can also be obtained by adding wetting agents to pastes, i.e. mixing solid active ingredients with non-dissolving liquids.
The various application forms can be used in the usual way by adding substances that improve the distribution, the adhesive strength, the rain resistance and possibly the penetration ver, such. B. fatty acids, resins, glue, casein or alginates, can be adapted to the intended use.
Their biological effect can also be broadened by adding substances with bactericidal, fungicidal properties or properties that also affect plant growth, as well as fertilizers. The following examples of typical application agents and forms are also given. <I> Example I </I> 20 parts of 2-chloro-4,6-dimethoxy-s-triazine are mixed with 70 parts of solid inert carrier, e.g. B.
Kaolin, bentonite, chalk or kieselguhr, 7 parts of a non-ionic wetting agent, e.g. B. a sulfuric acid ester of an alkyl polyglycol ether, and 3 parts of protective colloid, z. B. sulphite liquor, finely ground in a pin mill. The powder obtained can be suspended in water and can be processed into sprays.
0.5% emulsions of 2-chloro-4,6-dimethoxy-s-triazine caused severe leaf burns on mustard plants.
<I> Example 2 </I> 5 parts of 2-chloro-4,6-di-n-butoxy-s-triazine are dissolved in 90 parts of liquid carrier, e.g. B. trichlorethylene, xylene, acetone or diacetone alcohol, dissolved and treated with 5 parts of a nonionic emulsifier, z. B. Polyethylene ethers of fatty alcohols or alkyl phenol polyglycol ethers added. The solution is mixed with water in the desired ratio and forms a milky emulsion.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH336222T | 1955-01-14 | ||
| CH338052T | 1955-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH338052A true CH338052A (en) | 1959-04-30 |
Family
ID=25736760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH338052D CH338052A (en) | 1955-01-14 | 1955-01-14 | Preparations for influencing plant growth, in particular for combating weeds |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH338052A (en) |
-
1955
- 1955-01-14 CH CH338052D patent/CH338052A/en unknown
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