DTPA-extractable micronutrients: A geostatistical study from Ordu, Turkey

Authors : Tayfun Aşkın, Ferhat Türkmen, Ceyhan Tarakçıoğlu, Sezen Kulaç, Selahattin Aygün

Pages : 154-160

Doi:10.18393/ejss.286626

View : 21 | Download : 5

Publication Date : 2017-04-01

Article Type : Research Paper

Abstract :In present study, geostatistical techniques were applied to assess the spatial variability of DTPA-extractable micronutrients which are named heavy metals as chemistry such as; iron insert ignore into journalissuearticles values(Fe);, copper insert ignore into journalissuearticles values(Cu);, manganese insert ignore into journalissuearticles values(Mn); and zinc insert ignore into journalissuearticles values(Zn); in the non-tillaged layer in Ordu province- Altınordu district, Black sea region, Eastern part of Turkey. Study area was approximately 40095.8 ha where was divided into grids with 2500 x 2500 m spacing with including 66 sampling points from 0-0.2 m in depth. Soil reaction insert ignore into journalissuearticles values(pH); was the least variable property while electrical conductivity insert ignore into journalissuearticles values(EC); was the most variable. While the highest nugget effect occurred for Ext-Cu with moderate spatial dependence, the lowest for Ext-Mn with strong spatial dependence. The greatest range of influence insert ignore into journalissuearticles values(17424 m); occurred for Ext-Cu and the least range insert ignore into journalissuearticles values(692 m); for Ext-Zn. 
Keywords : DPTA extractable micronutrients, spatial variability, site specific management