Planning Research for Resource DecisionsIowa State University Press, 1970 - Всего страниц: 183 Scientists, research, and resource management. Planning research programs. Problem analysis and project planning. Scientific methods and models. Defining the study objective. Selecting study procedures. Preparing written study plans. Maintaining essential research records. Writing for publication. Being your own editor. Final throughts. An exhibit of research plans. |
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Стр. 150
... infection indicates blister - rust loss . Yield will be reduced by blister - rust infection in many white pine stands . To estimate the amount of loss we will estimate the rate of infection and the relationship between infection rate ...
... infection indicates blister - rust loss . Yield will be reduced by blister - rust infection in many white pine stands . To estimate the amount of loss we will estimate the rate of infection and the relationship between infection rate ...
Стр. 152
... infection because it often takes this long for an infection to kill the tree . On the other hand , a stand 50 years from harvest may lose 30 percent of its present stocking by future infection if the rate of infection is like that ...
... infection because it often takes this long for an infection to kill the tree . On the other hand , a stand 50 years from harvest may lose 30 percent of its present stocking by future infection if the rate of infection is like that ...
Стр. 155
... INFECTION RATE . The saving in yield at harvest associated with pest control is directly predictable from the relationships outlined in Sections 4.1 and 4.2 , if the impact of control on infection rate is predictable . 4.31 Blister ...
... INFECTION RATE . The saving in yield at harvest associated with pest control is directly predictable from the relationships outlined in Sections 4.1 and 4.2 , if the impact of control on infection rate is predictable . 4.31 Blister ...
Содержание
SCIENTISTS RESEARCH AND RESOURCE MANAGEMENT | 3 |
PLANNING RESEARCH PROGRAMS | 13 |
PROBLEM ANALYSIS AND PROJECT PLANNING | 25 |
Авторские права | |
Не показаны другие разделы: 6
Часто встречающиеся слова и выражения
alternatives areas authorship average blister-rust infection clientele condition class considered cost decision-makers define dependent determine develop eastern white pine efficient estimate evaluating even-aged example experience factors fatal infection FER-NE Forestry Grammar of Science gross yield growth rates hardwoods harvest hypothesis important independent variables inductive reasoning infection rate initial stand condition injury rate management and pest-control manuscript measure methods needed NEFES noun number of injuries observed overstory pest pest-control activities prediction problem analysis profitable project plan pruning publication punched cards rate of fatal reader records relationship research planning resource manager resource research sample scientific scientific methods scientists selected shortleaf pine significant solve specific statistical study objective study plan study procedures stumpage timber tree U.S. Forest Service various verb volume growth volume loss weevil injury white pine production white pine stands writing