TY - JOUR 
AU - Tayfun   Aşkın  
AU -  
AU - Rezan Yılmaz
AU - Vladimir Olekhov
AU - Natalya Mudrykh
AU - Iraida Samofalova
TI - Soil exchangeable cations: A geostatistical study from Russia
JO - Eurasian Journal of Soil Science
VL - 1
IS - 1
PB - Federation of Eurasian Soil Science Societies 
SN - 2147-4249 
UR - http://ejss.fesss.org/10.18393/2012.1.034-039
DO - 10.18393/2012.1.034-039
SP , EP - 34 - 39
KW  - Exchangeable cations, spatial variability, site specific management
PY  - 2012
AB  - In present study, geostatistical techniques was applied to assess the spatial variability of exchangeable cations such as; calcium (Ex-Ca2+), magnesium (Ex-Mg2+), potassium (Ex-K+) and sodium (Ex-Na+) in the tillaged layer in a Perm State Agricultural Academy Farm site in Perm region, West Urals, Russia. A 250x100 m plot (approximately 2.35 ha) was divided into grids with 25x25 m spacing that included 51 sampling points from 0-0.2 m in depth. Soil reaction (pH) was the least variable property while the Ex-K was the most variable. The greatest range of influence (237.6 m) occurred for Ex-Ca and the least range (49.7 m) for Ex-Mg.
ER  -