Barclay Crop Protection

April agronomy advice

Most winter sown cereals have come through to the spring well established and by now should have received a fungicide to control the main diseases.

HERBICIDE TREATMENTS:

Any remaining grass-weeds need to be controlled as soon as possible as after GS 31 the effects on final yields become more pronounced. The same can be said for some broadleaved weeds and in particular cleavers (Galium spp).

Hurler which contains fluroxypyr is particularly effective on this the most yield sapping of broadleaved weeds but needs to be applied at at least 0.75lt/Ha when the weed are growing actively to be fully effective. If tank mixed with a product containing ioxynil and bromoxynil trials show some increase in the level of weed control from this combination.

Table 1 below shows the effects of leaving three weed species uncontrolled after the end of March high-lighting the need to control undesirable species as early as possible.

 TABLE1:

The timing of weed competition

From:

IACR- Rothamstead 1994/95

 -Jonathon Harrington Optima Excel -