Thanks from ttcf and others for answering: P 71 kes to soil taxonomy 2014 : 2. A mesic or thermic soil temperature regime and a moisture control section that in normal years is dry in some part for six-tenths or more of the cumulative days per year when the soil temperature at a depth of 50 cm below the soil surface is higher than 5 oC; or b. Is dry in some part for six-tenths or more ofby hasramezanpour - Soil Taxonomy Forum
Thanks from ttcf and others for answering: 1- In page 116 keys to soil taxonomy have Lithic Xeric Haplocalcids why we have not Xeric Lithic Haplocalcids 2- Lithic ustic torriorthent and aridic lithic ustorthent , lithic has 2 different places why? On the other hand in the first lithic is first prefix however in the later , lithic is the second prefix why ?by hasramezanpour - Soil Taxonomy Forum
Thanks from ttcf and others for answering: 1- In page 116 keys to soil taxonomy have Lithic Xeric Haplocalcids why we have not Xeric Lithic Haplocalcids 2- Lithic ustic torriorthent and aridic lithic ustorthent , lithic has 2 different places why? On the other hand in the first lithic is first prefix however in the later , lithic is the second prefix why ?by hasramezanpour - Soil Taxonomy Forum
please say if it is possible that in Xerertic Calciargids subgroup we have xerertic prefix including xeric and vertic . so question is : 1- why these two words are not written as independent words for this subgroup for example can we say xeric vertic caciargid?? 2- can we say vertic xeric calciargid ?? 3- why xeric is said in the first and ertic is said later??? thanks to receiveby hasramezanpour - Soil Taxonomy Forum
Dear sir I sent 2 days ago one question about how to determine 6/10 of cumulative days per year in aridic subgroup . please send me an example about aridic , xeric or ustic subgroup . thanksby hasramezanpour - Soil Taxonomy Forum
please explain by an example that how can we determine 6/10 of cumulative days? one year is 365 days . is 6/10 of 365 days ?? or if 190 days are as cumulative dry .so we should determine 6/10 of 190 days ?how do we calculate 6/10/? according to definition of aridic in keys to.....: all parts for six-tenths or more of the cumulative days per year when the soil temperature at a depthby hasramezanpour - Soil Taxonomy Forum
Can we have fragipan within E albic horizon? Ex?by hasramezanpour - Soil Taxonomy Forum
If a plow layer is directly above Bt horizon , is it required for more clay content for illuvial Bt to be an argillic ? on the other hand in this condition according to keys to soil taxonomy we think the presence of clay film or skin and thickness is enough to be argillic and no need fo higher clay content in Bt. Is it right?by hasramezanpour - Soil Taxonomy Forum
please - one of important question is about the definition of these two parameter (Human transported and altered material): a : Considering two land use one is Foest land and another is Agriculturing land with cultivated soil in slope of 30 % in a mountain physiography which soil sampling were done in back slope position b: We know that these two land use are bothby hasramezanpour - Soil Taxonomy Forum
please 1- what is the difference of M ( master horizon ) and u ( suffix) . It seems that in keys to soil taxonomy 2014 , the same and similar definition was applied for both of them . please define with an example 2 - Can we apply the u suffix with B master horizon or not ? 3 - Can we use the M horizon in soil profile description without u suffix ? thanksby hasramezanpour - Soil Taxonomy Forum