NO124510B - - Google Patents
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- Publication number
- NO124510B NO124510B NO76769A NO76769A NO124510B NO 124510 B NO124510 B NO 124510B NO 76769 A NO76769 A NO 76769A NO 76769 A NO76769 A NO 76769A NO 124510 B NO124510 B NO 124510B
- Authority
- NO
- Norway
- Prior art keywords
- salt
- salts
- ammonium salt
- packaging
- carried out
- Prior art date
Links
- 239000004009 herbicide Substances 0.000 claims description 10
- 150000003863 ammonium salts Chemical class 0.000 claims description 9
- 230000002363 herbicidal effect Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 241001232700 Carex aquatilis Species 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 244000075850 Avena orientalis Species 0.000 description 2
- 235000007319 Avena orientalis Nutrition 0.000 description 2
- 241000646197 Carex nigra Species 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- LCPDWSOZIOUXRV-UHFFFAOYSA-N phenoxyacetic acid Chemical compound OC(=O)COC1=CC=CC=C1 LCPDWSOZIOUXRV-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000195967 Anthoceros Species 0.000 description 1
- 241000195950 Equisetum arvense Species 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 241000721662 Juniperus Species 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 244000110797 Polygonum persicaria Species 0.000 description 1
- 235000004442 Polygonum persicaria Nutrition 0.000 description 1
- 240000006694 Stellaria media Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000000250 methylamino group Chemical class [H]N(*)C([H])([H])[H] 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Herbicid. Herbicide.
Oppfinnelsen angår et nytt herbicid i form av et salt av a-(2,M—diklorfenoxy)-propionsyre, som herefter vil bli benevnt 2,^-DP, i fast form. The invention relates to a new herbicide in the form of a salt of α-(2,M-dichlorophenoxy)-propionic acid, which will hereafter be referred to as 2,^-DP, in solid form.
Det er kjent at salter og estere av 2,^-DP er effektive herbicider som finner utstragt anvendelse i landbruket hvor det anvendes en konsentrert, vandig opplosning- av kaliumsaltet. It is known that salts and esters of 2,^-DP are effective herbicides which find extensive use in agriculture where a concentrated, aqueous solution of the potassium salt is used.
Markedsføring av slike opplosninger medforer imidlertid adskil-lige problemer, som f.eks. hvordan den brukte emballasje, som ikke må efterlates fritt tilgjengelig på grunn av giftfaren, skal kunne kastes. Den må derfor enten returneres eller odelegges på forsvarlig måte, og -det siste vil som regel være vanskelig fordi emballasjen i alminnelighet er beholdere av glass eller metall. However, the marketing of such solutions entails several problems, such as e.g. how the used packaging, which must not be left freely available due to the risk of poisoning, must be disposed of. It must therefore either be returned or disposed of properly, and - the latter will usually be difficult because the packaging is generally glass or metal containers.
Kfr. kl. 12q-14/04 Cf. at 12q-14/04
Et annet problem er av bkonomisk art idet glass- og metall-emballasje er kostbar og veier meget, og det siste gir seg utslag i okede transportomkostninger både ved fremsendelse og returnering. Another problem is of an economic nature, as glass and metal packaging is expensive and weighs a lot, and the latter results in increased transport costs both when sending and returning.
Et tredje problem er faren for krystalliser ing dersom de konsentrerte opplosninger utsettes for avkjoling- under lagring. Hvis det forst har forekommet en krystallisering, vil gjenopplosningen foregå langsomt, og i metallbeholdere kan en krystallisering lett forbli uoppdaget med: det resultat at en vesentlig del av oppløsningen forbrukes for konsentrasjonsnedsettelsen merkes, hvorved den anvendte mengde pr. arealenhet blir usikker, men i hvert fall mindre enn beregnet, og derfor kanskje utilstrekkelig til å sikre den onskede ugressbekjempelse. A third problem is the danger of crystallization if the concentrated solutions are exposed to cooling during storage. If a crystallization has first occurred, the redissolution will take place slowly, and in metal containers a crystallization can easily remain undetected, with the result that a significant part of the solution is consumed for the concentration reduction, whereby the amount used per area unit becomes uncertain, but in any case less than calculated, and therefore perhaps insufficient to ensure the desired weed control.
Av disse grunner går utviklingen mot en markedsføring av herbicidene i form av faste pulvere som opploses umiddelbart for bruk. Slike pulvere pakkes i poser av plastfolie eller av mot fuktighet impregnert papir som lett kan odelegges ved forbrenning. Ved å anvende slike pakninger nedsettes også transportomkostningene, bl.a. fordi det spares transport av det for de konsentrerte opplosninger nodvendige vann og for returnering av emballasjen. Dessuten elimineres krystalliser ingsrisikoen, og herbicidene kan pakkes i passende små porsjoner uten noen vesentlig okning av pak-ning somkostningene og slik at doseringen lettes. For these reasons, development is moving towards marketing the herbicides in the form of solid powders that dissolve immediately for use. Such powders are packed in plastic foil bags or moisture-impregnated paper which can easily be destroyed by burning. By using such seals, the transport costs are also reduced, i.a. because it saves transport of the water needed for the concentrated solutions and for returning the packaging. Furthermore, the risk of crystallization is eliminated, and the herbicides can be packed in suitable small portions without any significant increase in packaging costs and so that dosing is facilitated.
Hittil er i alminnelighet det faste natrium- eller kalium- Until now, the solid sodium or potassium
salt av 2,^-DP blitt anvendt, men disse har vist seg å være forholdsvis omstendelige å fremstille da de krystalliserer meget langsomt. De er videre sterkt hygroskopiske slik at det må tas spesielle forholdsregler for å holde luftfuktigheten nede i de rom hvor disse salter pakkes og lagres, og det må anvendes en spesielt fuktighetstett emballasje da saltene ellers vil være- tilboyelige til å bake seg sammen og derved gjore en opplosning for bruk vanskelig. salt of 2,^-DP has been used, but these have proven to be relatively cumbersome to prepare as they crystallize very slowly. They are also highly hygroscopic so that special precautions must be taken to keep the humidity down in the rooms where these salts are packed and stored, and a particularly moisture-proof packaging must be used as the salts will otherwise be prone to sticking together and thereby making a solution for use difficult.
Det har nu vist seg at ammoniumsaltet av 2,^-rDP, som- såvidt vites ikke tidligere har- vært beskrevet i litteraturen, er lett - It has now been shown that the ammonium salt of 2,^-rDP, which, as far as is known, has not previously been described in the literature, is easily -
å fremstille ved å nbytralisere syren med ammoniakk, at det krystalliserer villig og- at det faste salt er langt mindre hygrosko-pisk enn natrium- og kaliumsaltene slik at det kan pakkes og lagres uten spesielle forholdsregler og ved anvendelse av vanlig, billig emballasje. to produce by neutralizing the acid with ammonia, that it crystallizes willingly and that the solid salt is far less hygroscopic than the sodium and potassium salts so that it can be packed and stored without special precautions and using ordinary, cheap packaging.
Herbicidet ifolge oppfinnelsen er derfor særpreget ved at det The herbicide according to the invention is therefore distinctive in that it
»w a W »w a W
som aktiv bestanddel inneholder ammoniumsaltet av a-(2diklorfenoxy)-propionsyre i fast, krystallinsk form. as active ingredient contains the ammonium salt of α-(2dichlorophenoxy)-propionic acid in solid, crystalline form.
Da dette salt lett og hurtig opplbses, kan egnede opplosninger As this salt dissolves easily and quickly, suitable solutions can be used
for sprbyting lett fremstilles også ved anvendelse av forholdsvis koldt vann, som ofte vil være tilfellet ved sprbyting tidlig på våren. for sprbyting is also easily produced by using relatively cold water, which will often be the case when sprbyting in early spring.
Da ammoniakk dessuten har en forholdsvis lav ekvivalentvekt, vil ammoniumsaltet inneholde en tilsvarende hby prosentuell andel av det herbicide 2,^-DP, og det er derfor billigere å anvende ammoniakk enn noen annen hittil anvendt base for fremstilling av et salt av 2,^-DP med en gitt herbicidvirkning. As ammonia also has a relatively low equivalent weight, the ammonium salt will contain a correspondingly high percentage of the herbicide 2,^-DP, and it is therefore cheaper to use ammonia than any other base used so far for the production of a salt of 2,^- DP with a given herbicidal effect.
Salter og estere av 2,^-DP anvendes spesielt for bekjempelse av vassarve (Stellaria media) og vanlig hbnsegress (Polygonum persicaria) i korn- og gresskulturer da disse ugressplanter ikke er fblsomme overfor de vanlig anvendte herbicider av fenoxyeddik-syretypen. Salts and esters of 2,^-DP are used in particular for the control of water sedge (Stellaria media) and common sedge grass (Polygonum persicaria) in grain and grass crops as these weed plants are not susceptible to the commonly used herbicides of the phenoxyacetic acid type.
For å fastslå virkningen av herbicidet ifblge oppfinnelsen er To determine the effect of the herbicide according to the invention is
det blitt utfort sammenligningsforsbk med det kjente kaliumsalt og det likeledes kjente methylaminsalt av 2,^-DP. comparative experiments have been carried out with the known potassium salt and the likewise known methylamine salt of 2,^-DP.
Et av disse forsbk ble utfort i en byggåker■sådd i april på leireholdig jord. Da sprbytingen ble utfort 31. mai, var bygget 20-25 cm hbyt og i stadiet av begynnende strekking. Ugresset besto hovedsakelig av ca. 10 cm hby vassarve og 10-15 cm hbyt vanlig hbnsegress. One of these trials was carried out in a barley field sown in April on clayey soil. When the spar replacement was carried out on 31 May, the building was 20-25 cm high and in the stage of initial stretching. The weeds mainly consisted of approx. 10 cm high water sedge and 10-15 cm high common sedge grass.
Fire parseller pa hver 50 m 2 ble sprbytet med hvert av kalium-, methylamin- og ammoniumsaltene av 2,^-DP i en mengde tilsvarende 1 kg 2,<*>+-DP pr. hektar under anvendelse av en. vannmengde tilsvarende <!>+00 liter pr. hektar. Four plots of 50 m 2 each were sprayed with each of the potassium, methylamine and ammonium salts of 2,^-DP in an amount corresponding to 1 kg of 2,<*>+-DP per hectares using a amount of water corresponding to <!>+00 liters per hectares.
Bedbmmelsen av ugressvirkningen ble foretatt 30» juni, og innhbstningsutbyttet ble oppgjort 21. august. Resultatene vil frem-gå av den nedenstående tabell. The assessment of the weed effect was carried out on 30 June, and the harvest yield was calculated on 21 August. The results will appear in the table below.
Et annet forsok ble utfort i en havreåker som på samme måte var blitt sådd i april på en humusrik, leireholdig jord. Sprøy-tingen ble utfort 31. mai på tilsvarende måte som i det ovenfor beskrevne forsok. Havren var da ca. 25 cm hoy og i stadiet av begynnende strekking. Også Ener var ugresset hovedsakelig vassarve og vanlig honsegress med en hoyde av henholdsvis 10 og 15 cm. Be-dommelsen av ugressvirkningen ble foretatt 1. juli,og innhbstningsutbyttet ble oppgjort 2h. august. Resultatene er angitt i den nedenstående tabell. Another trial was carried out in an oat field which had been similarly sown in April on a humus-rich, clayey soil. The sprøy thing was carried out on 31 May in a similar way to the trial described above. The oats were then approx. 25 cm high and in the stage of beginning stretching. Also in Juniper, the weeds were mainly water sedge and common horsetail with a height of 10 and 15 cm respectively. The assessment of the weed effect was carried out on 1 July, and the harvest yield was calculated in 2h. August. The results are shown in the table below.
Det fremgår av tabellene at ammoniumsaltet er meget virknings-fullt ovenfor vassarve og honsegress og fullt på hoyde med de andre salter. It can be seen from the tables that the ammonium salt is very effective against water sedge and hornwort and quite on par with the other salts.
Det er imidlertid ganske overraskende at det ved begge forsok ble fastslått et oket innhostningsutbytte ved å anvende ammoniumsaltet for sproytingen, og da hovedformålet med sprøytingen nettopp er å oke avlingen idet den konkurranse om lys, vann og næringsstof-fer som ellers ville forekomme mellom kulturplanter og ugress, unngås ved å utrydde ugresset, er merutbyttet en uventet fordel ved ammoniumsaltet. It is, however, rather surprising that in both trials an increased yield of inhaling was determined by using the ammonium salt for the spraying, and since the main purpose of the spraying is precisely to increase the yield, since the competition for light, water and nutrients that would otherwise occur between cultivated plants and weeds, is avoided by eradicating the weeds, the increased yield is an unexpected advantage of the ammonium salt.
Grunnen til merutbyttet er kanskje at kulturplantene bedre kan tåle ammoniumsaltet enn de kjente salter som det er blitt fastslått har en skadevirkning, selv om den. er liten, på de behandlede kulturplanter . The reason for the increased yield is perhaps that the cultivated plants can tolerate the ammonium salt better than the known salts which have been found to have a harmful effect, even if it. is small, on the treated cultivars.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB923168A GB1221437A (en) | 1968-02-26 | 1968-02-26 | Herbicide and herbicidal preparations |
Publications (1)
Publication Number | Publication Date |
---|---|
NO124510B true NO124510B (en) | 1972-05-02 |
Family
ID=9867937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO76769A NO124510B (en) | 1968-02-26 | 1969-02-25 |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE728900A (en) |
DE (1) | DE1909034A1 (en) |
DK (1) | DK118376B (en) |
GB (1) | GB1221437A (en) |
NL (1) | NL6902831A (en) |
NO (1) | NO124510B (en) |
SE (1) | SE379342B (en) |
-
1968
- 1968-02-26 GB GB923168A patent/GB1221437A/en not_active Expired
- 1968-03-14 DK DK107168A patent/DK118376B/en unknown
-
1969
- 1969-02-22 DE DE19691909034 patent/DE1909034A1/en active Pending
- 1969-02-24 NL NL6902831A patent/NL6902831A/xx unknown
- 1969-02-25 NO NO76769A patent/NO124510B/no unknown
- 1969-02-25 BE BE728900D patent/BE728900A/xx not_active Expired
- 1969-08-27 SE SE254769A patent/SE379342B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL6902831A (en) | 1969-08-28 |
GB1221437A (en) | 1971-02-03 |
BE728900A (en) | 1969-08-01 |
SE379342B (en) | 1975-10-06 |
DK118376B (en) | 1970-08-10 |
DE1909034A1 (en) | 1969-09-11 |
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