Journal of Tropical Soils
Vol 28, No 2: May 2023

Using Geostatistics for Spatial Analysis of Soil Moisture Content, Electrical Conductivity, and pH at Paddy Fields

Yagus Wijayanto (The University of Jember)
Muhammad Aldian Dwi Kustianto (Agrotechnology Study Program, Faculty of Agriculture, University of Jember, Jl. Kalimantan 37 Jember)
Subhan Arif Budiman (Agrotechnology Study Program, Faculty of Agriculture, University of Jember, Jl. Kalimantan 37 Jember)
Ika Purnamasari (Agrotechnology Study Program, Faculty of Agriculture, University of Jember, Jl. Kalimantan 37 Jember)



Article Info

Publish Date
24 Nov 2022

Abstract

Soil is dynamic due to various internal and external processes exerted on the soil, resulting in unique soil characteristics in space in short and long distances. Geostatistics (kriging) is the method of quantifying the spatial variation of soil properties. This research was mainly aimed at applying geostatistics to quantify and interpolate the spatial dependence and structure of three soil properties, namely pH, EC, and Soil Moisture Content (SMC) in a small area. This research was conducted on paddy fields in Mlandingan Kulon Village, Situbondo Regency. Sampling was conducted on an area of   9.2 ha with 31 sample points. Normal data distribution was found for pH and EC, whereas this was not the case for SMC. The results of the analysis showed that most of the pH values   were alkaline (>8), EC values were non-saline (<2 mm/cm), and SMC was in the low category (<20%). The results show that for three soil properties, weak dependencies were observed. The values of Root Mean Square Error (RMSE)  confirmed that kriging with exponential was better compared to the spherical model, resulting in the RMSE of 0.546 (pH), 0.041 (EC), and 1.512 (SMC).

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Journal Info

Abbrev

tropicalsoil

Publisher

Subject

Agriculture, Biological Sciences & Forestry Environmental Science

Description

Journal of Tropical Soils (JTS) publishes all aspects in the original research of soil science (soil physic and soil conservation, soil mineralogy, soil chemistry and soil fertility, soil biology and soil biochemical, soil genesis and classification, land survey and land evaluation, land development ...