Vining employees of a pea vinery located on a farm, who vine only
the peas grown on that particular farm, are engaged in agriculture. If
they also vine peas grown on other farms, such operations could not be
within section 3(f) unless the farmer-employer owns or operates the
other farms and vines his own peas exclusively. However, the work of
vining station employees in weeks in which the stations vine only peas
grown by a canner on farms owned or leased by him is considered part of
the canning operations. As such, the cannery operations, including the
vining operations, are within section 3(f) only if the canners can crops
which he grows himself and if the canning operations are subordinate to
the farming operations.