ZA200903020B - A herbicidal composition - Google Patents
A herbicidal composition Download PDFInfo
- Publication number
- ZA200903020B ZA200903020B ZA2009/03020A ZA200903020A ZA200903020B ZA 200903020 B ZA200903020 B ZA 200903020B ZA 2009/03020 A ZA2009/03020 A ZA 2009/03020A ZA 200903020 A ZA200903020 A ZA 200903020A ZA 200903020 B ZA200903020 B ZA 200903020B
- Authority
- ZA
- South Africa
- Prior art keywords
- herbicidal composition
- adjuvant
- ammonium salt
- surfactant
- diaminomethanal
- Prior art date
Links
- 230000002363 herbicidal effect Effects 0.000 title claims description 66
- 239000000203 mixture Substances 0.000 title claims description 61
- 239000002671 adjuvant Substances 0.000 claims description 54
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 34
- 239000004009 herbicide Substances 0.000 claims description 23
- 235000013877 carbamide Nutrition 0.000 claims description 17
- 150000003863 ammonium salts Chemical class 0.000 claims description 15
- 239000004094 surface-active agent Substances 0.000 claims description 14
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical group OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical group CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 claims description 6
- 229940100389 Sulfonylurea Drugs 0.000 claims description 6
- YROXIXLRRCOBKF-UHFFFAOYSA-N sulfonylurea Chemical class OC(=N)N=S(=O)=O YROXIXLRRCOBKF-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003359 percent control normalization Methods 0.000 description 5
- FIKAKWIAUPDISJ-UHFFFAOYSA-L paraquat dichloride Chemical compound [Cl-].[Cl-].C1=C[N+](C)=CC=C1C1=CC=[N+](C)C=C1 FIKAKWIAUPDISJ-UHFFFAOYSA-L 0.000 description 4
- RBSXHDIPCIWOMG-UHFFFAOYSA-N 1-(4,6-dimethoxypyrimidin-2-yl)-3-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-yl)sulfonylurea Chemical compound CCS(=O)(=O)C=1N=C2C=CC=CN2C=1S(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 RBSXHDIPCIWOMG-UHFFFAOYSA-N 0.000 description 3
- 239000005604 Prosulfuron Substances 0.000 description 3
- LTUNNEGNEKBSEH-UHFFFAOYSA-N Prosulfuron Chemical compound COC1=NC(C)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CC=2)CCC(F)(F)F)=N1 LTUNNEGNEKBSEH-UHFFFAOYSA-N 0.000 description 3
- 239000005619 Sulfosulfuron Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- UPMXNNIRAGDFEH-UHFFFAOYSA-N 3,5-dibromo-4-hydroxybenzonitrile Chemical compound OC1=C(Br)C=C(C#N)C=C1Br UPMXNNIRAGDFEH-UHFFFAOYSA-N 0.000 description 2
- 239000005489 Bromoxynil Substances 0.000 description 2
- 240000006122 Chenopodium album Species 0.000 description 2
- 235000009344 Chenopodium album Nutrition 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 244000104272 Bidens pilosa Species 0.000 description 1
- 235000010662 Bidens pilosa Nutrition 0.000 description 1
- 241001523018 Bromus diandrus Species 0.000 description 1
- 241000593769 Richardia <angiosperm> Species 0.000 description 1
- 240000006694 Stellaria media Species 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- ZJHHPAUQMCHPRB-UHFFFAOYSA-N urea urea Chemical compound NC(N)=O.NC(N)=O ZJHHPAUQMCHPRB-UHFFFAOYSA-N 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
Description
bE
A HERBICIDAL COMPOSITION
This invention relates to a herbicidal composition.
Urea and ammonium nitrate mixtures, commonly referred to as UAN, are well known in the art and are generally used as fertilizers. It has been known to use UAN having equal quantities by mass of urea and ammonium nitrate as an adjuvant to certain herbicides. Although this mixture has been found to be fairly effective as an adjuvant in certain instances, it does suffer the disadvantage that the ratio of urea to ammonium nitrate is not a standard ratio used in the production of fertilizers in many countries and thus requires special batching procedures.
It is an object of this invention to provide a herbicidal composition which will at least partially alleviate some of the abovementioned problems.
In accordance with this invention there is provided a herbicidal composition comprising a herbicide and an adjuvant, wherein the adjuvant comprises an ammonium salt and diaminomethanal in the ratio 1 to less than 1 by weight.
P1977ZA00/COMPLETE (4 Herbicidal Composition) }
Further features of the invention provide for the ratio of ammonium salt to diaminomethanal to be 1. 0.7-0.8 by weight, preferably 1:0.76; for the ammonium salt to be ammonium nitrate; for the adjuvant to include less than 30% by weight of water; and for the adjuvant to have a specific gravity of 1.27 to 1.29, and contain 28% nitrogen.
Still further features of the invention provide for the herbicide to include bipyridylium and sulfonylurea herbicides; and for the adjuvant to be between 0.1% and 1.0% of the composition.
According to one aspect of the invention there is provided for the adjuvant to further include a surfactant; for the surfactant to include a branched alcohol ethoxylate, preferably isotridecanol; for the ratio of surfactant to ammonium salt and diaminomethanal to be 30% (v/v) to 70% (v/v); for the pH of the adjuvant to be greater than 7; and for the specific gravity of the adjuvant to be 1.19.
A further feature of the invention provide for the adjuvant to be between 0.1% and 1.0% of the composition.
The invention also provides an adjuvant for a herbicide substantially as defined above. : 25 The following examples illustrate embodiments of the invention.
EXAMPLE 1
In a first embodiment of the invention an adjuvant solution containing diaminomethanal (urea) and an ammonium salt, in this embodiment ammonium nitrate, is prepared containing 957g/L urea/ammonium nitrate (UAN). This is made up from 543.29 g ammonium nitrate and 413.719 urea
P1971ZA00/COMPLETE (A Herbicidal Composition)
with a 1% variation. The remainder of the solution is water which constitutes less than 30% thereof.
The adjuvant has a specific gravity of between 1.27 and 1.29 and contains approximately 28% nitrogen.
The adjuvant can be mixed with any suitable herbicide. In this embodiment the adjuvant was mixed with bipyridylium herbicides, specifically paraquat and also with sulfonylurea herbicides, specifically sulfosulfuron and prosulfuron. The tables below illustrates the ratio of the mixtures used.
It has been found that the adjuvant significantly increases the activity of the bipyridylium and sulfonylurea herbicides. The following table indicates the effect of the adjuvant on the efficacy of prosulfuron + bromoxynil +
Complement (a mineral oil adjuvant) mixtures on two broadleaf weeds:
Herbicidal
Composition and Bilderdykia
Dosage Rate Days after convolvuls Chenopodium album per ha application %control %control
Peak (prosulfuron) 25 97 60 14g + 3% 93 } 55
Campatop “50° | 80 © |i 60° (bromoxynil) 500mt| + joe SE :
Complement | = | oo (mineral oil EER EEA BEA: : adjuvant) 0.25% | =~ = Cy EE
Peak 14g + 25 97 80
Campatop 500ml+f 36 | ~~ 97 ~~ | = 9
Complement 0.25%| ~ 50 ~ | ° “97 = | i 90 +
Adjuvant 0.5%
From this it will be apparent that the adjuvant greatly increased the long term effect of the herbicidal composition on Bilderdykia convolvuls and increased both the long term and short term effect on Chenopodium album.
P1977ZA00/COMPLETE (4 Herbicidal Composition)
The efficacy of sulfosulfuron with the adjuvant for the control of Bromus diandrus in wheat in the Western Cape 19 days after application (first evaluation) is shown in the following table: 5
Herbicidal Composition Dosage Rate % Control per ha
Monitor (sulfosulfuron) 75 20g +0.25% 65.0
WG + Agral 90 (NPE : surfactant)
Monitor 75 WG + Agral 90 + | 20g + 0.256% + 0.5% 78.8
Adjuvant oo
It will be noted that a remarkable increase in efficacy was achieved through the use of the adjuvant with the herbicide.
The effect of the adjuvant on the herbicidal efficacy of paraquat on broadleaf weed spectrum is illustrated in the following table:
Herbicidal Overall Control | Stellaria media | Bidens pilosa
Composition % (% Control) (% Control)
Skoffel Super | 0.44 65.0 81.3 25.0 (paraquat) + +0.1%
Villa 51 :
Isotridecanol
Skoffel Super | 0.41 + 83.8 91.8 35.0 + Villa 51 0.1% + + Adjuvant 0.5%
Again it will be noted that a remarkable increase in efficacy was achieved through the use of the adjuvant with the herbicide.
EXAMPLE 2
P1977ZA00/COMPLETE (4 Herbicidal Composition)
In a second embodiment of the invention a UAN solution having the same ammonium nitrate and urea composition as that described in Example 1 is mixed with a branched alcohol ethoxylate surfactant, in this embodiment isotridecanol. This surfactant is commonly available under the brand name “Marlipal 013/90" and also “Villa 51”. The solution is 70% UAN to 30% (v/v)
Villa 51.
A small amount of ammonium hydroxide is added to increase the pH to above 7 and the adjuvant has a specific gravity of 1.19.
The adjuvant has been used with sulfonylurea herbicides in the following mixture in the treatment of Richardia braziliensis:
I Le 51(Isotridecanol
Adjuvant
The adjuvant was found to significantly increase the activity of paraquat as will be seen from the results above.
The adjuvant provided in the above Examples shows surprisingly good enhancement of herbicidal activity and has the added benefit that it is relatively easy to manufacture using a standard 32% UAN. This avoids the need for special UAN formulations.
It will be appreciated that many other embodiments of a herbicidal composition and adjuvant for a herbicide exist which fall within the scope of the invention, particularly regarding the herbicide and the amount of adjuvant added thereto. For example, although the Examples illustrate the adjuvant as between 0.1% and 1.0% of the herbicidal composition which is administered a spray solution, it will be appreciated that any suitable amount can be used.
P1977ZA00/COMPLETE (4 Herbicidal Composition)
Also, the herbicide need not be a bipyridylium or sulfonylurea herbicide, or combination of these, but could be any suitable herbicide or mixture of herbicides.
P1977ZA00/COMPLETE (4 Herbicidal Composition)
Claims (30)
1. A herbicidal composition comprising a herbicide and an adjuvant, wherein the adjuvant comprises an ammonium salt and diaminomethanal in the ratio 1 to less than 1 by weight.
2. A herbicidal composition as claimed in claim 1 wherein the ratio of ammonium salt to diaminomethanal to be 1: 0.7-0.8 by weight.
3. A herbicidal composition as claimed in claim 2 wherein the ratio of ammonium salt to diaminomethanal to be 1: 0.76 by weight.
4. A herbicidal composition as claimed in any one of the preceding claims wherein the ammonium salt is ammonium nitrate.
5. A herbicidal composition as claimed in any one of the preceding claims wherein the adjuvant has less than 30% by weight of water.
6. A herbicidal composition as claimed in any one of the preceding claims wherein the adjuvant to have a specific gravity of 1.27 to 1.29.
: 7. A herbicidal composition as claimed in any one of the preceding claims wherein the adjuvant contains 28% nitrogen.
8. A herbicidal composition as claimed in any one of claims 1 to 5 wherein the adjuvant to further include a surfactant.
9. A herbicidal composition as claimed in claim 8 wherein the surfactant : is a branched alcohol ethoxylate. P1977ZA00/COMPLETE (4 Herbicidal Composition)
10. A herbicidal composition as claimed in claim 9 wherein the surfactant is isotridecanol.
11.A herbicidal composition as claimed in any one of claims 8 to 10 wherein the ratio of surfactant to ammonium salt and diaminomethanal is 30% (viv) to 70% (vIv).
12.A herbicidal composition as claimed in any one of claims 8 to 11 wherein the pH of the adjuvant is greater than 7.
13.A herbicidal composition as claimed in any one of claims 8 to 12 wherein the specific gravity of the adjuvant is 1.19.
14.A herbicidal composition as claimed in any one of the preceding claims wherein the herbicide includes bipyridylium and sulfonylurea herbicides.
15.A herbicidal composition as claimed in any one of the preceding claims wherein the adjuvant is between 0.1% and 1.0% of the composition.
16.An adjuvant for a herbicide comprising an ammonium salt and diaminomethanal in the ratio 1 to less than 1 by weight.
17.A herbicidal composition as claimed in claim 16 wherein the ratio of ammonium salt to diaminomethanal to be 1: 0.7-0.8 by weight.
18. A herbicidal composition as claimed in claim 17 wherein the ratio of ammonium salt to diaminomethanal to be 1: 0.76 by weight. P1977ZA00/COMPLETE (4 Herbicidal Composition)
19.A herbicidal composition as claimed in any one of claims 16 to 18 wherein the ammonium salt is ammonium nitrate.
20.A herbicidal composition as claimed in any one of claims 16 to 19 wherein the adjuvant has less than 30% by weight of water.
21.A herbicidal composition as in any one of claims 16 to 20 wherein the adjuvant to have a specific gravity of 1.27 to 1.29.
22.A herbicidal composition as claimed in any one of claims 16 to 21 wherein the adjuvant contains 28% nitrogen.
23.A herbicidal composition as claimed in any one of claims 16 to 19 wherein the adjuvant to further include a surfactant.
24 A herbicidal composition as claimed in claim 23 wherein the surfactant is a branched alcohol ethoxylate.
25. A herbicidal composition as claimed in claim 24 wherein the surfactant is isotridecanol.
26.A herbicidal composition as claimed in any one of claims 23 to 25 wherein the ratio of surfactant to ammonium salt and diaminomethanal is 30% (viv) to 70% (v/v).
27.A herbicidal composition as claimed in any one of claims 23 to 26 wherein the pH of the adjuvant is greater than 7.
28.A herbicidal composition as claimed in any one of claims 23 to 27 wherein the specific gravity of the adjuvant is 1.19. P1977ZA00/COMPLETE (4 Herbicidal Composition)
29.A herbicidal composition substantially as herein described and as exemplified with reference to the adjuvant containing compositions in Examples 1 or 2.
5 .
30.An adjuvant for a herbicide substantially as herein described and as exemplified with reference to Examples 1 or2. Dated this 4" day of May 2009 ; Vr VON SEIDELS Intellectual Property Attorneys for the applicant : P1977ZA00/COMPLETE (4 Herbicidal Composition)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA2009/03020A ZA200903020B (en) | 2009-05-04 | 2009-05-04 | A herbicidal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA2009/03020A ZA200903020B (en) | 2009-05-04 | 2009-05-04 | A herbicidal composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200903020B true ZA200903020B (en) | 2010-02-24 |
Family
ID=58161214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA2009/03020A ZA200903020B (en) | 2009-05-04 | 2009-05-04 | A herbicidal composition |
Country Status (1)
| Country | Link |
|---|---|
| ZA (1) | ZA200903020B (en) |
-
2009
- 2009-05-04 ZA ZA2009/03020A patent/ZA200903020B/en unknown
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