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New disease resistant walnut rootstock genotypes are considered genetically engineered plants?
These new genotypes completely eliminate the target disease, e.g. crown gall, phytophthora or lesion nematode?
New rootstock genotypes will eliminate replant disorders?
What is the feeding lifestyle of root lesion nematode, Pratylenchus vulnus?
When soil sampling an existing orchard, plant parasitic nematodes can be detected by collecting composite samples near active roots, edge of the tree canopy, in the wetting zone of drip emitters/microsprinklers.
Fumigated orchard soil provides growers….
Crown and root rots of walnut can be caused by:
Phytophthora crown and root rots are caused by species of:
Choose the least reliable long-term control strategy for integrated management of Phytophthora:
Of currently available rootstocks, which one exhibits the greatest resistance to Phytophthora cinnamomi:
Why can codling moths more easily access developing walnuts?
How does codling moth infestation facilitate navel orangeworm infestation?
Which of these practices are critical to navel orangeworm management in walnuts?
The key plant parasitic nematode in tree nuts is:
The best way to determine if nematodes are a problem in your soils is:
The following root symptom is an indication of nematode damage?
Which of the following field preparations is key for success in fumigating for nematodes?
Which of the following insecticides has proven effective for nematodes?
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