Method of Controlling Parasitic Weeds with Mixtures Comprising Herbicidal Acetolactate Synthase Inhibitors and Plant Growth Regulators

A method for controlling parasitic weeds, comprising applying to the host plant, the weeds and/or their habitat, a herbicidal mixture of components:

• A) one, two or three herbicidally active compound(s) from the group of acetolactate synthase (ALS) inhibitors, their agriculturally acceptable salts or derivatives;
• and
• B) one, two or three plant growth regulator(s) (PGR) which act as ethylene modulators selected from the groups consisting of L-2-amino-4-alkoxy-trans-3-butenoic acid, L-canaline, Co++ or Ni++ ions in plant-available forms, n-propyl gallate, n-octyl gallate, n-dodecyl gallate, putrescine, spermine or spermidine, α-aminoisobutyric acid, L-aminocyclopropene-1-carboxylic acid, salicylic acid, acibenzolar-S-methyl, prohexadione, prohexadione-calcium, trinexapac, trinexapac-ethyl, paclobutrazole, metconazole, uniconazole, 1-methylcyclopropene, 2,5-norbornadiene, 3-amino-1,2,4-triazole or Ag++ ions, their agriculturally acceptable salts or derivatives,
• in a synergistically effective amount.

A method to increase the yield of the crop plant, comprising applying to the host plant, the weeds and/or their habitat, a herbicidal mixture of components:

• A) one, two or three herbicidally active compound(s) from the group of acetolactate synthase (ALS) inhibitors, their agriculturally acceptable salts or derivatives;
• and
• B) one, two or three plant growth regulator(s) (PGR) which act as ethylene modulators selected from the groups consisting of L-2-amino-4-alkoxy-trans-3-butenoic acid, L-canaline, Co++ or Ni++ ions in plant-available forms, n-propyl gallate, n-octyl gallate, n-dodecyl gallate, putrescine, spermine or spermidine, α-aminoisobutyric acid, L-aminocyclopropene-1-carboxylic acid, salicylic acid, acibenzolar-S-methyl, prohexadione, prohexadione-calcium, trinexapac, trinexapac-ethyl, paclobutrazole, metconazole, uniconazole, 1-methylcyclopropene, 2,5-norbornadiene, 3-amino-1,2,4-triazole or Ag++ ions, their agriculturally acceptable salts or derivatives,
• in a synergistically effective amount.