Broad-leaved Weeds

Key Points

Broad-leaved Weed Germination Profile

Weeds can harbour infestations of insect pests

 

High weed populations compete with the crop for water, nutrients and light.

 

Broad-leaved weed control programs begin in the autumn

Follow-up treatments are normally applied by GS30-32 of the crop.

  

Use the emergence chart below to plan applications around your weed profile

 

 

 

 

 

     

Weed

Jan

 

Feb

 

Mar

 

Apr

 

May

 

Jun

 

Jul

 

Aug

 

Sep

 

Oct

 

Nov

 

Dec

 

Cleavers

Galium aparine

                             

 

 

Charlock

Sinapsis arvensis

                       

 

 

Mayweed

Matricaria spp.

                     

 

 

Common poppy
Papaver rhoeas

                                 

 

 

Common chickweed
Stellaria media

                     

 

 

Redshank

Polygunum persicaria

                                     

 

 

Knotgrass

Polygunum aviculare

                                   

 

 

Common speedwell
Veronica persica

                     

 

 

Ivy-leaved speedwell
Veronica hederaefolia

                               

 

 

Groundsel

Senecio vulgaris

                     

 

 

Field pansy

Viola arvensis

                             


Darker colours represent peak of emergence.

Biology

Land used for cereal crops can become infested with annual and pereninial weeds. To minimise competition between weeds and crop it is advisable to treat broad-leaved weeds in cereal crops beofre they compete significantly with the crop. Programs begin in autumn often with additional treatments made in the spring, around GS 30-32.


Control Options

A key benefit of Spitfire is its robustness of control of major weeds from early autumn to late spring. As the spring progresses even more options become available for broad-leaved weed control in cereals.

Starane XL, GF-184, Hiker, Starane Gold and Starane Vantage can all be applied once the crop has reached GS13. Best results are achieved from applications made from late March onwards.

Starane 2 can be used from late April onwards, when temperatures are warmer and the risk of night frosts has diminished.

Broad-leaved weeds and grassweeds:

The introduction of pyroxsulam, found in UNITE, Broadway Star and Broadway Sunrise, has created a whole new concept in weed control. In the past, most herbicides have focused on either effectively controlling grassweeds or broad-leaved weeds - our pyroxsulam products control both weed types without comprise - that's 'cross spectrum' weed control.