Combination of novel nitrification inhibitors and herbicides as well as combination of (thio)phosphoric acid triamides and herbicides

Abstract

A composition including (a) at least one (thio)phosphoric acid triamide (T), where the (thio)phosphoric acid triamide (T) is one of N-n-butylthiophosphoric acid triamide (NBPT) and N-n-propylthiophosphoric acid triamide (NPPT), and (b) at least one specific herbicide.

Claims

1. A composition comprising: a) at least one (thio) phosphoric acid triamide (T), wherein the (thio) phosphoric acid triamide (T) is selected from the group consisting of N-n-butylthiophosphoric acid triamide (NBPT) and N-n-propylthiophosphoric acid triamide (NPPT); b) at least one herbicide selected from the group consisting of saflufenacil and dimethenamid, and c) at least one urea-containing fertilizer (U), wherein the at least one (thio) phosphoric acid triamide (T), the at least one herbicide, and the at least one urea-containing fertilizer (U) are present in a synergistically effective amount.

2. The composition according to claim 1, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:1000 to 1000:1.

3. The composition according to claim 1, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:100 to 100:1.

4. The composition according to claim 1, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:20 to 20:1.

5. The composition according to claim 1, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:6.5 to 6.5:1.

6. A method for increasing the herbicidal activity of a herbicide, the method comprising: treating at least one of (a) a plant growing on at least one of soil or soil substituents, or (b) a locus, soil, or soil substituents where the plant is at least one of growing or intended to grow, with a synergistically effective amount of a) at least one (thio) phosphoric acid triamide (T), wherein the (thio) phosphoric acid triamide (T) is selected from the group consisting of N-n-butylthiophosphoric acid triamide (NBPT) and N-n-propylthiophosphoric acid triamide (NPPT); b) at least one herbicide selected from the group consisting of saflufenacil and dimethenamid; and c) at least one urea-containing fertilizer (U), wherein the plant is a crop plant.

7. The method according to claim 6, wherein the treating with the (thio) phosphoric acid triamide (T) and the at least one herbicide is carried out with a time lag.

8. The method according to claim 7, wherein the treating with the (thio) phosphoric acid triamide (T) and the at least one herbicide is carried out with the time lag, and wherein the time lag is an interval selected from the group consisting of 1 day, 2 days, 3 days, 1 week, 2 weeks, and 3 weeks.

9. The method according to claim 6, wherein the treating with the (thio) phosphoric acid triamide (T) and the at least one herbicide is carried out simultaneously.

10. The method according to claim 6 wherein the at least one urea-containing fertilizer selected from the group consisting of urea, formaldehyde urea, UAN, urea sulfur, stabilized urea, urea based NPK-fertilizers, and urea ammonium sulfate.

11. The method according to claim 10, wherein the treating with the (thio) phosphoric acid triamide (T), the at least one herbicide, and the urea-containing fertilizer is carried out with a time lag.

12. The method according to claim 11, wherein the treating with the (thio) phosphoric acid triamide (T), the at least one herbicide, and the urea-containing fertilizer is carried out with the time lag, and wherein the time lag is an interval selected from the group consisting of 1 day, 2 days, 3 days, 1 week, 2 weeks, and 3 weeks.

13. The method according to claim 10, wherein the treating with the (thio) phosphoric acid triamide (T) and the at least one herbicide is carried out simultaneously.

14. The method according to claim 6, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:1000 to 1000:1.

15. The method according to claim 6, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:100 to 100:1.

16. The method according to claim 6, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:20 to 20:1.

17. The method according to claim 6, wherein the synergistically effective amount comprises a weight ratio between the at least one (thio) phosphoric acid triamide (T) and the at least one herbicide in a range of from about 1:6.5 to 6.5:1.

18. The composition according to claim 1, wherein the (thio) phosphoric acid triamide (T) is a mixture of N-n-butylthiophosphoric acid triamide (NBPT) and N-n-propylthiophosphoric acid triamide (NPPT).

19. The method according to claim 6, wherein the (thio) phosphoric acid triamide (T) is a mixture of N-n-butylthiophosphoric acid triamide (NBPT) and N-n-propylthiophosphoric acid triamide (NPPT).

Description

EXAMPLE 1

(1) Soil was sampled fresh from a field (e.g. Limburgerhof), dried and sieved through a 500 m sieve. Approximately 200 mg of soil were placed into each well of a 48 well plate. Compounds, or DMSO alone, were added at a concentration of 10 ppm, dissolved in 1% DMSO. 6 mol ammonium sulfate was added per well as well as 4.8 mg NaClO.sub.3.

(2) Subsequently, the samples were incubated at room temperature for up to 72 hrs. After the incubation period 64 mg KCl were added and mixed. 25 l of the supernatant were placed into a fresh plate and 260 l of a color reaction solution (from Merck Nr 1.11799.0100) were added.

(3) Measurements were taken with a Tecan plate Reader at 540 nm wavelength.

(4) The results of the measurements (with a dose of 10 ppm) were that all compounds #1 to #215 as shown in Table 1, supra demonstrated an inhibition of 10% compared to a control (DMSO only).

EXAMPLE 2

(5) Roundup Powermax is a SL formulation containing approx. 540 g/L glyphosate (as potassium salt) as active ingredient. Verdict is an EC formulation containing approx. 6 wt. % saflufenacil and approx. 55 wt. % dimethenamid-P as active ingredients. Weedone is an EC formulation containing approx. 640 g/L 2,4-dichlorophenoxyacetic acid, isooctyl ester as active ingredient. UAN is a solution of urea and ammonium nitrate in water. MSO is methylated seed oil. Limus is a mixture of NBPT and NPPT with about NBTP at 63% and NPPT at 22%, secondary compounds at 10%, further secondary compounds such as amines below 4% and dimerease derivatives below 1%. DAT stands for days after treatment. The Latin names for the weeds used in Example 2 are shown below: Giant foxtail=Setaria faberi Velvetleaf=Abutilon theophrasti Waterhemp=Amaranthus rudis Lambsquarters=Chenopodium album Pigweed=Amaranthus palmeri Morningglory=Ipomoea L. sp. Cutleaf Evening Primrose=Oenothera laciniata Marestail=Conyza canadensis
Greenhouse Burndown

(6) This experiment conducted in the BASF greenhouses in RTP, North Carolina, USA. Herbicides and adjuvants were mixed with 28% UAN (UAN=a solution of urea and ammonium nitrate in water) or 32% UAN as a carrier, using a mixing order of UAN.fwdarw.Limus.fwdarw.MSO (if applicable).fwdarw.herbicide. Solutions were agitated before spraying.

(7) Weeds were grown in greenhouse flats to an average height of giant foxtail=6, velvetleaf=5.25, waterhemp=6, and lambsquarters=7.5 before solution was applied. Plants were sprayed in a spray chamber with a 20 boom height and 8003E nozzles at a rate of 47 gal solution/acre.

(8) Treatments were rated for % control over a 25 day period. Limus: 9.6 fl oz/acre Roundup Powermax (high rate) 32 fl oz/acre Roundup Powermax (low rate): 8 fl oz/acre Weedone: 16 fl oz/acre Verdict: 14 fl oz/acre w/ MSO concentrate w/ Leci-Tech: 16 fl oz/acre

(9) The weed control rate (in %) achieved with the different treatments are shown in Table 4.

(10) TABLE-US-00004 TABLE 4 (all values in %) (weed control in greenhouse burndown): UAN 28 UAN 28 Roundup Roundup (low UAN 28 UAN 28 (low rate) UAN 28 Weedone Check UAN 28 Limus rate) Limus Weedone Limus 3DAT giant foxtail 0.0 7.5 10.0 12.5 10.0 10.0 velvetleaf 0.0 8.8 7.5 10.0 11.3 28.8 30.0 waterhemp 0.0 20.0 28.8 30.0 42.5 55.0 lambsquarters 0.0 0.0 0.0 8.8 10.0 45.0 45.0 7 DAT giant foxtail 0.0 5.0 5.0 12.5 12.5 5.0 5.0 velvetleaf 0.0 7.5 7.5 17.5 17.5 40.0 40.0 waterhemp 0.0 17.5 16.3 35.0 33.8 60.0 58.8 lambsquarters 0.0 0.0 0.0 15.0 15.0 52.5 55.0 12 DAT giant foxtail 0.0 0.0 13.8 12.5 5.0 6.3 velvetleaf 0.0 1.3 18.8 20.0 48.8 46.3 waterhemp 0.0 32.5 42.5 38.8 70.0 72.5 lambsquarters 0.0 0.0 0.0 13.8 13.8 57.5 57.5 25 DAT giant foxtail 0.0 0.0 50.0 50.0 0.0 0.0 velvetleaf 0.0 0.0 0.0 40.0 40.0 81.3 80.0 waterhemp 0.0 11.3 67.5 75.0 75.0 96.3 lambsquarters 0.0 0.0 0.0 10.0 11.3 77.5 78.8 UAN 32 UAN 32 UAN 32 UAN 32 UAN 32 Roundup UAN 32 Verdict UAN 32 Weedone UAN 32 Limus Round up Limus Verdict Limus Weedone Limus 3DAT giant foxtail 7.5 21.3 25.0 40.0 36.3 13.8 17.5 velvetleaf 11.3 10.0 12.5 15.0 55.0 57.5 28.8 30.0 waterhemp 27.5 21.3 31.3 31.3 70.0 75.0 47.5 48.8 lambsquarters 0.0 13.8 17.5 52.5 52.5 40.0 50.0 7 DAT giant foxtail 5.0 5.0 28.8 28.8 35.0 36.3 5.0 5.0 velvetleaf 10.0 23.8 25.0 72.5 75.0 40.0 40.0 waterhemp 18.8 17.5 28.8 27.5 87.5 87.5 52.5 57.5 lambsquarters 0.0 0.0 23.8 23.8 72.5 73.8 50.0 50.0 12 DAT giant foxtail 5.0 5.0 40.0 40.0 40.0 41.3 5.0 5.0 velvetleaf 5.0 5.0 31.3 32.5 95.0 92.5 47.5 47.5 waterhemp 42.5 42.5 38.8 38.8 100.0 97.5 53.8 62.5 lambsquarters 0.0 0.0 37.5 35.0 85.0 90.0 50.0 50.0 25 DAT giant foxtail 0.0 0.0 97.5 96.3 78.8 78.8 0.0 0.0 velvetleaf 0.0 0.0 66.3 68.8 95.0 95.0 81.3 80.0 waterhemp 55.0 25.0 70.0 75.0 98.8 97.5 90.0 92.5 lambsquarters 0.0 0.0 63.8 65.0 90.0 88.8 80.0 80.0
Field Pre-Emergence

(11) This experiment took place at the BASF Research Farm in Pine Level, North Carolina, USA. Solutions were mixed as described above and sprayed at 47 gal/acre using a 2 row boom, 18 high, with 11004DG nozzles.

(12) Weed control was rated periodically over 35 days following initial application. Limus: 9.6 fl oz/acre Verdict (med rate): 7 fl oz/acre Verdict (high rate): 14 fl oz/acre

(13) The weed control rate (in %) achieved with the different treatments are shown in Table 5.

(14) TABLE-US-00005 TABLE 5 (all values in %) (weed control in tied pre-emergence): UAN 28 UAN 28 UAN 28 Verdict UAN 28 Verdict Verdict (high Verdict (medium UAN 28 (high rate) (medium rate) Check UAN 28 Limus rate) Limus rate) Limus 7DAT Pigweed 0.0 50.0 50.0 95.0 95.0 95.0 95.0 15DAT Pigweed 0.0 30.0 30.0 100.0 100.0 98.3 100.0 Morning glory 0.0 0.0 0.0 86.7 93.3 85.0 86.7 22DAT Pigweed 0.0 0.0 0.0 98.3 98.3 90.0 95.0 Morning glory 0.0 0.0 0.0 95.0 96.7 85.0 90.0 35DAT Pigweed 0.0 0.0 0.0 98.3 98.3 86.7 93.3 Morning glory 0.0 0.0 0.0 93.3 95.0 85.0 90.0
Field Burndown

(15) This experiment took place at the BASF Research Farm in Pine Level, NC, USA. Solutions were mixed as described above and sprayed at 47 gal/acre using a 2 row boom, 18 high, with 11004DG nozzles.

(16) The weeds evaluated were cutleaf evening primrose and mare's tail. Primrose averaged 10-18 in height and mare's tail averaged 3-6 at 8 DAT.

(17) Treatments were rated for % control over a 25 day period. Limus: 9.6 fl oz/acre Roundup Powermax (high rate): 32 fl oz/acre Roundup Powermax (med rate): 16 fl oz/acre Weedone: 16 fl oz/acre

(18) The weed control rate (in %) achieved with the different treatments are shown in Table 6.

(19) TABLE-US-00006 TABLE 6 (all values in %) (weed control in tied burndown): UAN 28 UAN 28 UAN 28 Roundup UAN 28 Roundup Roundup Power- Roundup Power- Power- max Power- max max (high max (medium UAN 28 (high rate) (medium rate) Check UAN 28 Limus rate) Limus rate) Limus 8 DAT Cutleaf 0.0 21.7 21.7 35.0 33.3 36.7 40.0 Evening Primrose Marestail 0.0 10.0 10.0 35.0 35.0 38.3 40.0 18 DAT Cutleaf 0.0 5.0 5.0 61.7 63.3 65.0 68.3 Evening Primrose Marestail 0.0 5.0 5.0 68.3 68.3 65.0 65.0 25 DAT Cutleaf 0.0 5.0 5.0 66.7 68.3 70.0 71.7 Evening Primrose Marestail 0.0 5.0 5.0 71.7 81.7 71.7 71.7 UAN 28 UAN 28 Roundup Roundup Power- Power- max UAN 28 max (low UAN 28 Weedone (low rate) Weedone LV 6 rate) Limus LV 6 Limus 8 DAT Cutleaf 31.7 33.3 53.3 53.3 Evening Primrose Marestail 33.3 35.0 51.7 51.7 18 DAT Cutleaf 55.0 55.0 66.7 68.3 Evening Primrose Marestail 53.3 51.7 63.3 65.0 25 DAT Cutleaf 61.7 68.3 81.7 83.3 Evening Primrose Marestail 61.7 60.0 78.3 73.3