nonliving factors host:oregonstate.edu

Listing 1 - 6 from 6 for nonliving factors

DIAGNOSING PLANT DAMAGE - Define the Problem
... in the growth or appearance of the plant in response to living or nonliving damaging factors. Many damaging factors can produce the same symptoms; symptoms are not definitive. Signs are evidence ... plant damage. Some pathogens and insects as well as nonliving factors are only damaging if the plant has been predisposed by other primary factors. For example, borers generally only attack trees that ...
oregonstate.edu

DIAGNOSING PLANT DAMAGE - Look for Patterns
... living and nonliving factors that cause plant damage. Nonuniform Damage Pattern (living Factors) vs Uniform Damage Pattern on Plant Community, Plant, Plant Part (nonliving Factors). LIVING FACTORS: There ... usually leave "signs", i.e. excrement cast skins, mycelium, eggs... NONLIVING FACTORS: Damage patterns produced by nonliving factors such as frost or applications of toxic chemicals (Figure 5 ...
oregonstate.edu

DIAGNOSING PLANT DAMAGE - Delineate Development
... III. DELINEATE DEVELOPMENT As already mentioned, another clue for distinguishing between living and nonliving factors causing plant damage is to observe the development of the pattern. Living organisms ... develop (Figure 6), but damage will not spread to plants in uncontaminated areas: NONLIVING FACTORS ARE NOT PROGRESSIVE. This again reemphasizes the necessity of piecing together multiple clues ...
oregonstate.edu

DIAGNOSING PLANT DAMAGE - ANNOTATED BIBLIOGRAPHY
... a hand lens. Includes diagnostic information on plant damage caused by both pathogen and nonliving factors such as environmental extremes, mechanical-physical damage, and chemical disorders. The book is available ... Box 532, Geneva, IL 60134-0532, phone 708-208-9080, fax 708-208-9350. NONLIVING FACTORS -PROBLEM DIAGNOSIS HERBICIDE INJURY DIAGNOSIS APPLIED WEED SCIENCE. 1985. Merrill A. Ross and ...
oregonstate.edu

DIAGNOSING PLANT DAMAGE - Figure 2-4
... nonliving factor such as weather (wind, snow, etc), animal damage, or chemical drift. Top FIGURE 3. SHOOT DIEBACK A. SHOOT DIEBACK CAUSED BY NONLIVING FACTORS: Sudden dying back of a shoot usually indicates nonliving cause such as climatic or chemical damage, - not a living factor. Damage caused by non-living factors ...
oregonstate.edu

DIAGNOSING PLANT DAMAGE - Figure 6
... - Figure 6 A Systematic Approach to DIAGNOSING PLANT DAMAGE FIGURE 6, LEAF DAMAGE PATTERN BY NONLIVING FACTORS, i.e. toxic chemicals taken up through roots or from polluted air filtered through the ...
oregonstate.edu