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
  • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
  • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
  • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals

Definitions

• N-phosphono-methylglycine also known by its common name glyphosate.
• the length of time during which glyphosate is somewhat vulnerable to rain depends on many environmental and plant factors, and on the duration and intensity of rain, but can be as short as thirty minutes or as long as twelve hours or more after application. In the great majority of cases rain falling six or more hours after application does not seriously affect performance ofthe herbicide.
• the amount of such additional surfactant other than alcohol alkoxylate to be included depends greatly on the chemical composition of that surfactant, on the plant species targeted and on environmental factors. Normally, however, the weight/weight ratio of alcohol alkoxylate to the total of other surfactants is in the range from about 1:20 to about 5:1, preferably from about 1:10 to about 2:1 and most preferably from about 1:5 to about IJ.
• the present invention is illustrated by but not limited to the following Examples. In describing concentrate compositions ofthe Examples, percentages are given by weight unless otherwise indicated. In describing concentrations of surfactants in spray solutions, percentages are given by volume.
• the test species was Elymus repens (quackgrass, AGRRE). All glyphosate formulations were applied at both 0.75 and 1.5 lb. a.e./acre (0.84 and 1.68 kg a.e./ha) in a spray volume of 20 gallons/acre (187 l/ha). Commercial Roundup herbicide was included as a standard. Simulated rain was apphed in the amount of 6 mm over a period of 15 minutes, beginning 1 hour after glyphosate treatment. Data on percent inhibition without and with "rain” are presented in Table 3. Table 3 : Percent inhibition of quackgrass 28 DAT without simulated rain (means of 3 replicates).
• Data in Table 4 show percent inhibition as recorded 21 days after treatment (DAT) with glyphosate at the rate of 0.75 lb. a.e./acre (0.84 kg a.e./ha), without and with "rain” as described above.
• Gl in which x + y is 8 and n is an average of 7.7
• G2 in which x + y is 12 and n is an average of 9.0.
• the formulations of this example were combined with aqueous solution of isopropyl amine salt of glyphosate and the resulting solution was further diluted with water to produce a spray solution.
• the spray solution was sprayed on plants in a greenhouse to determine their herbicidal efficacy.

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)

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Publications (2)

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• 1996
  • 1996-06-17 EP EP96923316A patent/EP0854676A4/de not_active Withdrawn
  • 1996-06-17 WO PCT/US1996/010467 patent/WO1997000010A1/en not_active Ceased
  • 1996-06-17 CA CA002224364A patent/CA2224364A1/en not_active Abandoned
  • 1996-06-17 NZ NZ312352A patent/NZ312352A/xx unknown
  • 1996-06-17 AU AU63863/96A patent/AU696607B2/en not_active Ceased
  • 1996-06-17 JP JP50340097A patent/JP3980640B2/ja not_active Expired - Lifetime

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