Dormancy of Trees in Winter: Photoperiod is only one of the variables which interact to control leaf fall and other dormancy phenomena.

TO Perry - Science, 1971 - science.org
Dormancy of Trees in Winter Page 1 tenance of human diversity should be a paramount aim.
As long as our brave new world presents an abundance of choices andas long as we have …

Distinguishing between nitrification and denitrification as sources of gaseous nitrogen production in soil

EA Davidson, WT Swank, TO Perry - Applied and Environmental …, 1986 - Am Soc Microbiol
The source of N 2 O produced in soil is often uncertain because denitrification and nitrification
can occur simultaneously in the same soil aggregate. A technique which exploits the …

The ecology of tree roots and the practical significance thereof.

TO Perry - 1982 - cabidigitallibrary.org
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Ecotypic variation of the photoperiodic response in Populus

SS Pauley, TO Perry - Journal of the Arnold Arboretum, 1954 - JSTOR
During the past few decades, the traditional and complacent notion that genetic differences
within tree species are nonexistent or negligible has been gradually discarded. Most …

[PDF][PDF] Tree roots: facts and fallacies

TO Perry - Arnoldia, 1989 - arborcaresolutions.com.au
Contrariwise, if a tree is repeatedly defoliated, some of its roots will die back. Proper func-tioning
of roots is as essential to the processes of photosynthesis as are the leaves and other …

Genetic variation in the winter chilling requirement for date of dormacy break for Acer rubrum

TO Perry, WC Wu - Ecology, 1960 - JSTOR
Most tree species from the temperate climate must be exposed for a minimulll nu1. lmber of
hours to low tempera-tures (for chilling treatment) before they can break their winter …

[PDF][PDF] Exploring alternatives to tree injection

TO Perry, FS Santamour, RJ Stipes, T Shear, AL Shigo - J. Arboric, 1991 - researchgate.net
The history of injection practices in medicine and arboriculture is reviewed and the
problems associated with these practices are discussed. Columns of occluded (compartmentalized) …

Physiological genetics of the shoot-root ratio.

FT Ledig, TO Perry - 1966 - cabidigitallibrary.org
Experiments with Loblolly Pine revealed differences in the shoot/root ratio, but indicated that
these differences might be due primarily to comparison of seedlings of different weights. …

Dormancy, Turion Formation, and Germination by Different Clones of Spirodela polyrrhiza

TO Perry - Plant physiology, 1968 - academic.oup.com
Some clones of Spirodela polyrrhiza form dormant bodies called turions which require
several weeks of chilling treatment before they proceed to renew growth and develop into …

Pollen dispersion of Slash Pine (Pinus elliottii Engelm.) with special reference to seed orchard management.

CW Wang, TO Perry, AG Johnson - 1960 - cabidigitallibrary.org
Observations were made on pollen dispersal of P. elliottii during the years 1956-58, and the
results, combined with a review of literature, provide the basis for a discussion of the …