Seeds under peeled pods often fail to develop properly. Spraying with one of the recommended insecticides can be justified in situations where there are over 20 larvae per plant. All insecticides have very low LD50 values. All safety precautions outlined on the label should be followed. White Mold White mold can be a serious disease problem in years with wet or humid conditions during flowering.
Infection occurs when dropped petals contact the stem and spores germinate on the dead petals.
Bleached stem lesions occur around the initial infection, then white mold and black fungal bodies grow inside and outside the stem. Sudden wilting and premature dying of individual plants are usually the first noticeable symptoms. Avoid following soybeans, sunflowers and white beans with canola because they are also susceptible to the disease. Treatment with a fungicide may be advisable when conditions favour white mold but the fungicide must be applied before the symptoms appear. The risk of white mold is high when the disease developed in previous crops, when the canola stand is dense and vigorous and when several days of wet weather precede the early flowering stage.