Mateno CompletePlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

!

ChatGPT

GENERAL INSTRUCTIONS

Mateno Complete Herbicide is primarily a residual, soil applied, pre-emergent herbicide, also with early post-emergence activity. Pyroxasulfone is primarily absorbed by the roots and to a lesser extent the shoots of germinating and young seedling weeds. Aclonifen and diflufenican are foliar active herbicides with less soil activity than pyroxasulfone. Activity of Mateno Complete on grass weeds for pre-emergent and early post-emergent application is primarily through root uptake, as well as some foliar uptake for early post-emergent application. Activity on broadleaf weeds from early post-emergence application is primarily via foliar activity. Weed control from pre-emergent application is optimised when Mateno Complete is applied evenly to soil just prior to incorporation by sowing and there is sufficient rainfall soon after sowing to ensure uptake of the herbicide by germinating weeds. Grass weed control from early post-emergent application is optimised when Mateno Complete is applied evenly to the soil and young actively growing weeds and there is sufficient rainfall soon after application to ensure root uptake of the herbicide. Broadleaf weed control from early post-emergent application is optimised when Mateno Complete is applied evenly to young actively growing weeds and there is good even coverage, particularly the meristematic area of the weeds.

Application before Incorporation by Sowing

Weeds germinating from depth, weeds just about to emerge or germinated and emerged weeds at sowing that are not controlled by an effective knockdown herbicide at sowing may not be controlled by Mateno Complete. Ensure complete and even spray coverage of soil is achieved. Poor spray coverage may result from application to ridged or excessively cloddy soil or in situations of high stubble, plant residue or other ground cover. A significant reduction in weed control may result where stubble, plant residue or other ground cover exceeds 50%, and in situations where a ‘cold’ or incomplete burn of stubble results in a mass of material which can act as a physical barrier between the herbicide and germinating weeds – this can be exacerbated in header trails where there may be greater weed seed numbers and higher levels of plant residue. Weed control can be particularly affected where Mateno Complete is applied to a barrier of stubble, plant residue or other ground cover and there is insufficient following rainfall to move the herbicide to the seed and root zone of germinating weeds.

Interval between Application and Incorporation by Sowing

To optimise weed control, sow as soon as practicable after the application of Mateno Complete and no later than 7 days after application.

Incorporation by Sowing

When applied prior to sowing, Mateno Complete should be incorporated by sowing using knife points and press wheels or disc seeding systems (not barley) that are set up to ensure sufficient separation of the crop seed from treated soil, stubble and weeds (see Crop Safety section). Ensure treated soil is not thrown into adjacent furrows. When incorporation is by knife point and press wheels, weeds germinating in or near the seed row (edge of the furrow) may not be controlled. Knife points and press wheel seeding systems are generally safer to the crop than disc seeding systems as they tend to move more treated soil, stubble and weeds away from the crop row and cover the treated soil surface between the crop rows with soil, reducing the risk of Mateno Complete moving and concentrating in the crop row following rainfall. Disc seeding systems that result in minimal soil disturbance and allow the concentration of herbicide in the seeding slot following rainfall will substantially increase the risk of crop damage and should be avoided.

Soil Type

Grass weed control is often more reliable in loam to clay soils, where there is enough rainfall within 7 to 10 days after application to facilitate the uptake of the herbicide by germinating weed seeds. Weed control may be reduced in soils prone to leaching (e.g. light or sandy soils) where rainfall after application and sowing is sufficiently heavy to cause movement of the herbicide out of the weed root zone. Weed control may also be adversely affected by the presence of water repellent soils.

Suppression of great brome and wild oats (IBS application)

Mateno Complete is most effective when grass weed seeds are present on or very close to the soil surface with good soil moisture at the time of application. For this reason, it is recommended that Mateno Complete is applied to uncultivated soil prior to incorporation by sowing. As the depth of weed seeds increases, control from Mateno Complete tends to decrease. It is rare that all great brome and wild oat seeds will be on the soil surface at the time of Mateno Complete application, especially considering that these seeds may remain viable in the soil for several seasons. Plants may germinate from seeds buried by the sowing operation, by livestock or by weed seed self-burial mechanisms particularly in some soil types (e.g. cracking clays and sand). Therefore, only partial control or suppression of the great brome or wild oat population should generally be expected. In these situations, a follow up application with a suitable post-emergent herbicide will generally be required to control remaining plants.

Suppression of broadleaf weeds (IBS application)

The control of broadleaf weeds from the IBS application of Mateno Complete requires sufficient soil moisture for herbicide uptake and may be adversely affected by insufficient rainfall within 7 to 10 days of application. In drier conditions, the control or suppression of broadleaf weeds may be very poor, particularly for some weeds such as denseflower fumitory. Generally, only partial control or suppression of broadleaf weed populations should be expected. In these situations, a follow up application with a suitable post-emergent herbicide will be required to control remaining weeds.

Early Post Emergence (EPE) Application

Annual grass weeds

For early post emergent grass weed control, Mateno Complete should only be used following a pre-sowing application of an effective pre-emergent herbicide relevant for the weed/s being targeted. For example, for the control of up to 3 leaf annual ryegrass in established wheat, Mateno Complete may be applied following the pre-sowing application of trifluralin, Avadex® Xtra, Arcade® or Boxer Gold®. Check with Bayer Crop Science for additional herbicides tested. For reliable control, weeds should be actively growing at the time of application and there should be sufficient rainfall soon after application for the movement of the product into the weed root zone. Weed control may be reduced if grass weeds are under stress (e.g. due to factors such as frosts before and/or after application, dry or waterlogged conditions, nutrient deficiency or damage from insects or disease). Grass weed control on sandy soils may be adversely affected where rainfall after application is sufficiently heavy to cause the movement of the herbicide through and out of the weed root zone.

There may be increased risk of crop damage from application following heavy rainfall in disc sown crops where rainfall is sufficiently heavy to move cause a concentration of herbicide in the crop sowing slot (see Crop Safety section).