Dwarf Mistletoe Does Not Increase Truck Taper in Released Red Firs in California PDF Download
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Author: Robert F. Scharpf
Publisher:
ISBN:
Category : Arceuthobium
Languages : en
Pages : 4
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Dwarf mistletoe had no noticeable effect on trunk taper of young, dominant and codominant red firs 4 to 22 inches (10.2 to 55.9 cm) d.b.h. Also, taper was not influenced by live crown ratio of infected and uninfected trees. Trees less than 7 inches d.b.h. had significantly more taper than larger trees, irrespective of dwarf mistletoe.
Author: Robert F. Scharpf
Publisher:
ISBN:
Category : Arceuthobium
Languages : en
Pages : 4
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Dwarf mistletoe had no noticeable effect on trunk taper of young, dominant and codominant red firs 4 to 22 inches (10.2 to 55.9 cm) d.b.h. Also, taper was not influenced by live crown ratio of infected and uninfected trees. Trees less than 7 inches d.b.h. had significantly more taper than larger trees, irrespective of dwarf mistletoe.
Author:
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Category :
Languages : en
Pages :
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Author: Robert F. Scharpf
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ISBN:
Category :
Languages : en
Pages : 3
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Author:
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ISBN:
Category : Arceuthobium
Languages : en
Pages : 200
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Author: Robert F. Scharpf
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ISBN:
Category : Arceuthobium
Languages : en
Pages : 16
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Young red firs (Abies magnifica A. Murr.) and white firs (A. concolor [Gord. & Glend.] Lindl. ex Hildebr.) on the Stanislaus National Forest, California, were inoculated with seeds of dwarf mistletoe (Arceuthobium abietinum) for 5 successive years. Only 3 to 4 percent of about 7000 seeds placed on branches resulted in infections. Second-generation infections developed and populations of the parasite built up on some trees but not on others after 17 years. Variables that appeared to regulate population increases included an 8- to 9-year average between inoculation and fruiting of plants, low rate of fruit production among female plants, low proportion of plants producing abundant fruit (100 or more/year), and irregular production of fruit on plants over the years, Death of infected branches also helped keep populations of the parasite in check. In vigorous, well-managed stands of young firs, dwarf mistletoe populations may not build up rapidly enough to result in serious losses.
Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 152
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Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 524
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 92
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Author: Frank G. Hawksworth
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ISBN:
Category : Arceuthobium
Languages : en
Pages : 28
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Author: Lee Alfred Paine
Publisher:
ISBN:
Category :
Languages : en
Pages : 650
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