The Assessment of Soil Quality at Paddy Fields in Merauke, Indonesia

SUPRIYADI SUPRIYADI1; PURWANTO PURWANTO1; ABDULLAH SARIJAN2; YOSEHI MEKIUW2; RENI USTIATIK3; RENITA RATNA PRAHESTI3
1 Universitas Sebelas Maret, Faculty of Agriculture, Study Program of Soil Science, Kentingan, Jebres, Surakarta 57126, Central Java, Indonesia
2 University of Musamus Merauke, Faculty of Agriculture, Kamizaun Mopah Lama Merauke, Papua 99611, Indonesia
3 Universitas Sebelas Maret, Faculty of Agriculture, Study Program of Agrotechnology, Kentingan, Jebres, Surakarta 57126, Central Java, Indonesia

Abstract

Supriyadi, S., P. Purwanto, A. Sarijan, Y. Mekiuw, R. Ustiatik and R. R. Prahesti, 2017. The assessment of soil quality at paddy fields in Merauke, Indonesia. Bulg. J. Agric. Sci., 23 (3): 443–448

Indonesia’s agricultural land has potentials to be expanded. To achieve a food security in Papua, Indonesia’s government has been promoting a program namely Merauke Integrated Food and Energy Estate (MIFEE). The objective of this study is to determine soil quality on several paddy fi elds in Merauke District, Papua. Soil samples were gathered from 9 old paddy fi elds and 1 new paddy field (as the control). This study used the Principal Component Analysis (PCA) to determine the most appropriate indicator to form minimum data set (MDS). MDS was taken to calculate the Soil Quality Index (SQI). Some soil properties were used as indicators which were consist of soil pH, organic carbon (OC), bulk density (BD), particulate organic matter (POM), Available-N (Av-N) and it represented 89.3% of the variability of data. The results showed that all SQI in the study sites were lower than location 10/the control site (3.470), except for location 3 which has the same SQI level. In fact, land use changes from natural into paddy fi elds or other agriculture lands may degrade soil and land functions. Therefore, the action requires more efforts to maintain the soil function.

Key words: minimum data set; paddy field; principal component analysis; soil quality; soil quality index
Abbreviations: MIFEE – Merauke Integrated Food and Energy Estate; PCA – Principal Component Analysis; SQI – Soil Quality Index; MDS – Minimum Data Set; OC – Organic Carbon; BD – Bulk Density; POM – Particulate Organic Matter

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