In This Section

Topics

Compitox, Mecoprop: mecoprop

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 21 January 2008
Pub 75: Guide to Weed Control > Notes on Herbicides > Compitox, Mecoprop: mecoprop
Excerpt from Chapter 4, Publication 75, Guide to Weed Control, Order this publication
Trade Names
Compitox, Mecoprop
Formulation Sn
Guaranteed active concentration 150 g/L
Ontario Schedule 3
Winter Storage A
Chemical Family Phenoxy
Group 4
Crop and/or Non-Crop Registrations Cereals, turf.
Sensitive Weeds Many broadleaf weeds such as chickweed, cleavers, plantain, clover, corn spurry, stitchwort, black medick, knotweed, shepherd's-purse, buttercup, Canada thistle (top-growth control) and dandelion. For complete control of Canada thistle, dandelion and black medick, a repeat application will likely be required.
Uptake and Translocation Absorbed readily by foliage and translocated to roots and throughout shoots, especially to growing points.
Basis of Selectivity Differences in interception, penetration, translocation, metabolism and sensitivity of active sites result in broadleaf species being more sensitive than grasses.
Application Methods Postemergence. Apply to cereals between the 3-leaf and early flag-leaf stage. In lawns and turf, apply when weeds are actively growing (May, June and September).
Residual Activity Can persist in soil up to 4 weeks, however, grass can normally be seeded within 1-2 weeks after treatment.
Unique Characteristics Controls 2,4-D-resistant weeds such as chickweed, clovers, black medick and young knotweed. Do not spray on grain underseeded to legumes. If cereals are stressed at the time of application, deformed heads and missing florets may result. Can be safely used on bentgrass, however, injury may occur if temperature is above 27°C. Effectiveness will be reduced if rain occurs within 4-6 hr. after treatment.
Manufacturer/ Registrant Compitox Nufarm Agriculture
Mecoprop  United Agri Products

| Top of Page |

Related Links

| Top of Page |

For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca