One method of controlling volunteer cereals and other annual
weeds is to disc or cultivate immediately after harvest and
then till the soil again just before seeding the cover crop
Care should be taken not to delay the date of seeding, since
a vigorous and competitive cover crop is your best weed control.
There are no herbicides registered for use on oilseed radish
crops. Care should be taken that the oilseed radish crop is
not allowed to establish viable seed, unless it is to be harvested
for seed production, to reduce problems with volunteer oilseed
radish in the next crop.
There is a certain percentage of hard seed that may not germinate
in the year of planting and may pose a weed problem in later
Oilseed radish can bolt and flower by October. If viable
seed is set, this too could become a weed problem.