water or other liquids across a creek, ravine, or other depres- 

 sion which lies across the course of a canal or ditch location. 



Flyway 



A migration route of birds, e.g., the Mississippi River 



flyway. 



Fodder 



The dried, cured plants of crops such as corn and sor- 

 ghum, including all parts above ground including the grain, 

 cf. Stover, Hay. 



Foehn 



A dry wind which is warm for the season. It blows down 

 leeward slopes of mountains, especially in the Alps. cf. 

 Chinook. 



fog 



The condensation of water vapor on particles of dust or 



smoke particles. 



Foliaceous 



Refers to structures that are leafy or leaf-like, thin. 



Foliage Cover 



See Cover. 



Foliar Diagnosis 



Evaluation of the status of plant nutrients in a plant, 

 or the plant-nutrient requirements of a soil, by the analysis 

 of leaves. 



Follicle 



A dry, many-seeded fruit developed from a simple ovary 

 which when ripe splits along a single line, e.g., the larkspur 

 fruit. 



Food-chain 



A figure of speech for the dependence for food of organ- 



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