Spatial variability of agrochemical properties of arable soils (case study: Trubchevsk district of the Bryansk region)
Abstract
The degree of spatial variation of agrochemically important properties of plowing horizon (pH KCl, hydrolytic acidity, absorption capacity, the degree of saturation of bases, humus content, mobile phosphorus and exchange potassium) is estimated. It is shown that the partition of the set into subsets corresponding to classification units significantly reduces the degree of variation of humus and physico-chemical properties, practically without changing the variability of pH, the content of mobile phosphorus and exchange potassium. Discriminant analysis shows that the arable horizons of sod-medium podzolic, gray forest and dark gray forest soils are satisfactorily classified for a given set of properties. Poorly classified bog-podzolic and gray forest gleyed soils. Light gray forest soils occupy an intermediate position, gravitating toward gray forest soils.
References
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Zongming Wang, Bai Zhang, Kaishan Song et al. Landscape and Land-Use Effects on the Spatial Variation of Soil Chemical Properties // Communicat. in Soil Sci. and Plant Analysis. 2009. Vol. 40, Iss. 15/16.
Received: 07/13/2018
Accepted: 09/11/2018
Accepted date: 06/30/2019
Keywords: spatial variability; agrochemical properties; discriminant analysis
Available in the on-line version with: 30.06.2019
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