Simple, Surprising Tips for Tree Planting & Maintenance
(Page 2 of 2)
May/June 2007
Aubrey Vaughn
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Q: Homeowners are often told to apply
fertilizers to newly planted trees to promote their growth. You
advise against this ? why?
A: Fertilization suppresses the natural defense
systems. There's really strong evidence that the faster a tree
grows, the lower the level of its defenses. Fertilization also
makes trees more nutritious to insects. So insects feeding on
fertilized trees grow faster, have higher survival rates, and lay
more eggs. We found the same in our research of disease.
Fertilization weakens the tree's defense response to diseases.
Fertilization can even make the trees more susceptible to drought
stress by decreasing the root/shoot ratio (by stimulating leaf
growth, proportionally, more than root growth).
For tree planting tips and instructions, check out
'
Home Landscaping,' from
Mother Earth News
magazine. The National Arbor Day
Foundation will help you discover a wide selection of tree
varieties, their specific growing needs and which trees grow best
where.
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