Spatial variability of total porosity, air entry potential and saturation water content in a cultivated inceptisol. I. Semivariance analysis

• Published in: Agricultural water management 1995, Vol.27 (1), p.1-9
• Main Authors: Patgiri, D.K., Baruah, T.C.
• Format: Article
• Language: English
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; Earth sciences; Earth, ocean, space; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Normal distribution; Nugget variance; Physical properties; Physics, chemistry, biochemistry and biology of agricultural and forest soils; Sernivariance; Soil science; Structure, texture, density, mechanical behavior. Heat and gas exchanges; Water and solute dynamics
• ISSN: 0378-3774; 1873-2283
• DOI: 10.1016/0378-3774(95)01132-3

Variability of porosity, air entry potential and saturation water content at depths of 0–30 cm and 30–60 cm in a cultivated Inceptisol with respect to distance of separation of observations was estimated quantitatively. All the three soil properties in general were found to be of low variability (CV < 15%) with porosity at surface soils showing the lowest variability. Observations on all the three properties were found to follow a normal distribution. The variability of observations followed a distinct trend with respect to distance of separation. The spatial variability of the observations on the indicated properties continued even beyond a transect length of 600 m. Variability of observations at short distance was in general low, the lowest being shown by saturation water content at a depth of 0–30 cm.