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Articles related to stratification

Stratification of Tree Seed for Proper Germination - The Complete ...
Stratification - Many dormant tree seeds need to be "after-ripened" before they can germinate. This is the most common cause of seeds failing to germinate.
http://forestry.about.com/od/treeplanting/qt/stratification.htm
Germinating and Planting Common Tree Seeds
Hickory - This tree nut is generally considered to exhibit embryo dormancy. The common treatment is to stratify the nuts in a moist medium at 33 to 50 degrees F ...
http://forestry.about.com/od/plantingandreforestation/a/seed_guide_2.htm
Propagate Hickory Tree Seed - The Complete Forest, Trees and ...
The hickory tree nut is generally considered to exhibit embryo dormancy and needs stratification. The common treatment is to stratify the nuts in a moist medium ...
http://forestry.about.com/od/treeplanting/qt/seed_hickory.htm
Stratification of Seeds to Break Dormancy - Gardening - About.com
Stratification is a means of simulating the chilling and warming that seeds would endure if left outdoors in their native climate for the winter.
http://gardening.about.com/od/seedstarting/g/Seed-Stratification.htm
Stratification - Sociology - About.com
Stratification is the social process through which rewards and resources...
http://sociology.about.com/od/S_Index/g/Stratification.htm
Stratified Charge - Hybrid Cars - Alternative Fuels - About.com
Definition: Stratified charge combustion engines utilize a method of distributing fuel that successively builds layers of fuel in the combustion chamber. The initial  ...
http://alternativefuels.about.com/od/glossary/g/stratifiedchg.htm
stratified random sample - Market Research - About.com
A stratified random sample is classified as a probabilistic sampling procedure. Stratified samples consist of homogeneous sub-groups that are considered to be  ...
http://marketresearch.about.com/od/market.research.glossary/g/Stratified-Random-Sample.htm
Stratified Sample - Sociology - About.com
A stratified sample is a probability sampling technique in which the researcher divides the entire target population into different subgroups, or strata, and then ...
http://sociology.about.com/od/Types-of-Samples/a/Stratified-Sample.htm
Ranking and Social Inequality - About Archaeology
... of Ancient Civilizations, and part of the Dictionary of Archaeology. A fairly brief bibliography of ranking and social stratification has been collected for this entry.
http://archaeology.about.com/od/rterms/g/ranking.htm
What Is a Stratified Sample - Statistics - About.com
Some populations naturally split into several non-overlapping segments. A stratified sample recognizes this and seeks to contain representatives from all of  ...
http://statistics.about.com/od/Glossary/a/What-Is-A-Stratified-Sample.htm
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