Wei encouraged growers to question their grapevine suppliers in detail about their certified stock
, "because certified stock
is supposed to be clean, but as many of you know, it is not always."
Look for plants described as 'Certified Stock
' inspected under the Government's Certification Scheme which guarantees healthy stock.
The calibration curves (1-5 were established with solutions prepared from a 1000 g/L certified stock
* "Some overseas customers like to specify certified stock
but when we quote a higher cost they usually purchase non-certified stock at a lesser price."
The rootstock that we use comes from certified stock
growers, and is sturdy and disease free.
may be grown only from Foundation stock.
In your September 2001 issue ("Strawberry Fields Forever") you said "even organic farmers depend on certified stock
that is pathogen-free, courtesy of methyl bromide." I have been growing organic strawberries for the past 15 years and have bought certified stock
only at the start.
They should all have certified stock
labels and only yesterday I found some excellent bags containing just over six pounds of potatoes for pounds 1.85.
Replace old and diseased soft fruit bushes but only choose certified stock
Vine stock has been exclusively planted as non-certified dormant, own-rooted vines with the potential for certified stock
entering the market during the next five years via Foundation Plant Services in Davis, Calif.
Always start with runners that are certified as virus tested from which you can propagate your own runners for the next four or five years after which it is advisable to buy in certified stock