SOIL Studies

SOIL Studies

2019, Vol 8, Num, 2     (Pages: 068-080)

Determination of Some Pysico-chemical Properties of the Soils Formed under Semihumid Ecological Condition and Their classification and Mapping in Series Level

Arif AYDIN 1 ,Orhan DENGİZ 2

1 Tarım ve Orman Bakanlığı İl Tarım ve Orman Müdürlüğü, Samsun
2 Ondokuz Mayıs Üniversitesi Ziraat Fakültesi Toprak Bilimi ve Bitki Besleme Bölümü, Samsun

DOI: 10.21657/topraksu.519915
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The aim of this study is to determine basic physico-chemical soil properties, make soil classification, create a soil database and generate a digital soil map for agricultural areas which covers about 397.28 ha and includes 1523 parcels of Seyitali, Kaya, Idrisli, Muhsinli, Beykoy and Çayirli neighborhoods located at Kavak district in the south of Samsun province. The mean annual temperature is 10.2 OC and the annual average rainfall is 512.5 mm. According to Newhall simulation model, soil temperature and moisture regimes are Mesic and Typic Xeric, respectively. Field observations and investigation of topographical, geological and geomorphological maps, six soil pedons were described. Soil samples were taken from each pedons based on genetic horizon and laboratory analyses were performed. Detailed field study was carried out with grid method and auger examination. By assessing the results of analyses and field studies, six soil series were determined and described. Three of them were classified as Entisol due to their little pedogenic horizon development , the two of them were Inceptisol and one was Verisol. Entisols cover about 67.5% of the total area followed by Inceptisols with 21.8% and Vertisols with 10.6%. As for FAO-WRB, classification system, soils were classified as Vertisol, Cambisol and Regosol. In addition, whereas the Çayırlı series has the largest area (24.08%), the Idrisli series was determined as the smallest land (8,17%) in the study area.

Keywords : Soil classification, soil database, soil survey mapping