117- 



Soil is apt to "be deficient in potash (K) and phosphorus (P). 



There are 3 classifications of soil: 

 1) Physical. 



Texture, sine o." particles: gravel, r.r.nd, silt , clay. 



2} Chemical 



ind, lonrn, clay, etc. 



In 



.11=3 in pl??ce; transport .uti, water, ice, or gravity. 



; thre; s main constituent! 3 of soil are: cant?, clay and humus. 

 Loarr. ic :.l i'cnej; may contain all three constituents. 

 ieultur-'l soil; 1 2-2j million grains. 



Origin ci> cnti: ':? c:i ossified according to their trans- 

 porti;- 



llurialJ by ",--. tor: fine, stratified. 

 Colluvial: by gravity: coarse. 



j) . "by wind: very fine. 

 \1; by ice: irrsgule*. 



So i 1 - s : 



1) le soil .':'-;. ter ) 



tion ) Important factors. 



lure } 



ess of "i*: tor to pi ^.n t s . 



1) CV lly: furni;3}ies ?.?nd N. 

 ration current . 



An B 3? ^ood forest uoes pOOO,? water per year chemically and 

 -7b'0 tonr :e-^r for tr- r,i ?ire. tion currents. /-. beech in Europe lost 



10 torus of --tor per day during the grov/in^ sear.on. A layer Of 1* of 



v/ater over an aero weisha 113 tono. 



ter ia loot to plants in three ways: 



1} aun-off 



2; .- -tioii froK. soil 



3} Water that sin/.o inlo Uia ^ro-ind to tlio water- table ( 

 lon) . 



:oodo transpire iauch mo re v.'nt.er t)ian conifer a, as a class, 

 latter have shallow root aystei/is and arc able to live on less 



. 



A/aount of \vater UISGU on Forest, and Farm 



jjocation : Tens dry natter: Indies vator 

 : : produced per A : needed par 

 : ; per year ; year 



; Forest : 1-^ : 2-7 

 ; Farm 4-9 : 16-40 



