What are the mode of action of herbicides?

The mode of action of herbicides includes inhibition, interruption, disruption, or mitigation of the regular plant growth [21-23]. Herbicides are classified based upon different aspects, such as mode of action, site of action, chemical families, time of application, selectivity, translocation, etc.

What is the classification of herbicides?

There are two major categories of herbicides classified by mode of action: contact herbicides and translocated herbicides. Contact herbicides affect only the part of the plant that they touch.

How many herbicide mode of action are there?

In other cases, the mode of action may be a general description of the injury symptoms seen on susceptible plants. In Oklahoma crop production, 11 different herbicide modes of action are commonly used, and each is unique in the way it controls susceptible plants.

What are seven major mode of action families of herbicides?

Families within the mode of action include triazines, uracils, phenylureas, benzothiadiazoles, nitriles, and pyridazines. Common herbicides include Atrazine, Sencor, Hyvar, Karmex, Basagran, and Buctril.

What is Group 4 herbicide?

Dicamba, the active ingredient in Engenia, is a Group 4 (WSSA) herbicide. Herbicides in this group mimic auxin (a plant hormone) resulting in a hormone imbalance in susceptible plants that interferes with normal plant growth (e.g. cell division, cell enlargement, and protein synthesis).

What are the names of herbicides?

Herbicide List
  • Metribuzin, Dacthal, Sethoxydim.
  • Carfentrazone, Pendimethalin.
  • Halosulfuran-methyl, Bensulide.
  • Trifluralin, Napropamide.

What is the mode of action of glyphosate?

Mode of Action:

In plants, glyphosate disrupts the shikimic acid pathway through inhibition of the enzyme 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase. The resulting deficiency in EPSP production leads to reductions in aromatic amino acids that are vital for protein synthesis and plant growth.

What is a mode of action group?

Groups or families of related chemical compounds have been categorised based on a similar chemical structure and ‘mode of action’. This is the way in which the active ingredients work to inhibit or eliminate the target pest organism.

What is the difference between site of action and mode of action?

The mode of action is the name for the process the herbicide uses to control the weed. So site of action is ‘where’ and mode of action is ‘how’”. According to Dr. Bryan Young in the same article, “Typically the target is an enzyme used in carrying out a process like amino acid production or photosynthesis.

What is the best definition of a herbicide?

: an agent used to destroy or inhibit plant growth.

What is a Group 14 herbicide?

Group 14 herbicides are inhibitors of the protoporphyrinogen oxidase (PPO) enzyme. There are currently no known populations of weeds resistant to Group 14 in Australia. However, there are 6 weeds with confirmed resistant to Group 14 herbicides elsewhere in the world and in particular in populations of Amaranthus spp.

What are the different types of herbicides Class 8?

Examples of specific synthetic chemical pesticides are glyphosate, Acephate, Deet, Propoxur, Metaldehyde, Boric Acid, Diazinon, Dursban, DDT, Malathion, etc.

What are herbicides with example?

Herbicides are pesticides specially meant for killing weeds. Examples include sodium chlroride (NaClO3), sodium arsenite (Na3AsO3) etc.

What is a Group 27 herbicide?

Isoxaflutole, the active ingredient in Alite 27, is a Group 27 (WSSA) herbicide. Isoxaflutole is classified as a HPPD inhibiting herbicide and inhibits 4-hydroxyphenyl-pyruvate dioxygenase (HPPD) enzyme which converts 4-hydroxymethyl pyruvate to homogentisate, a key step in plastoquinone biosynthesis.

What is Group M herbicide?

For the control of tree weeds and unwanted tree plants in forestry, pasture, commercial, industrial and public service areas as per the Directions For Use table. IMPORTANT: READ THE ATTACHED LEAFLET THOROUGHLY BEFORE USING THIS PRODUCT.