After three days you should have an indication whether the fumigant is still present. This is not a fool proof method, but it is worth a try. I have more detailed instructions in the office. This herbicide must be incorporated by cultivation in two directions. It provides good control of annual grasses, but is poor for groundsel, ragweed, nightshades and mustard.
Phosphorous uptake is limited in cool soils.
Strawberry transplants will benefit from starter fertilizer high in phosphorous under these conditions. Some early varieties are at this stage near Harrow. More information will be provided in future agriphone messages, or contact your local crop advisor for details. Growers who have had problems with raspberry crown borer should take note of the timing for controlling this pest. Any time now, or as new growth appears, apply a soil drench of daizinon.