Use of pore elongation index for structure evaluation of soil lessivé affected by tillage measures
Beata Kołodziej
Maja Bryk
Anna Słowińska-Jurkiewicz
Abstract
The present paper aimed at a definition of the pore cross-sections elongation index in soil lessivé (0–8 cm layer) under onion field after different cultivation treatments and in changeable weather conditions. The measurements were taken using binary images of opaque soil blocks surfaces sized 75.0 mm × 65.0 mm. Considering difficulty in shape classification of smaller pores for the shape analysis the pores sections with the surfaces of at least 100 pix2 were chosen, which corresponds to 0.179 mm2. The following groups of pore cross-sections were defined according to elongation index: circular 0–0.1, elliptical 0.11–0.5 and elongated > 0.51. It was stated that elongated pores dominated in each tested state of soil, regardless of differentiation of external factors. Circular pores had a little percentage in total numbers of pores. The lowest values of numbers of all pores were observed in soil samples after passage of tractor during fertilization and a month after tractor pressure and onion removal.
License
Articles are made available under the conditions CC BY 4.0 (until 2020 under the conditions CC BY-NC-ND 4.0).
Submission of the paper implies that it has not been published previously, that it is not under consideration for publication elsewhere.
The author signs a statement of the originality of the work, the contribution of individuals, and source of funding.
Self-Archiving Policy
Agronomy Science has adopted a self-archiving policy called blue by the Sherpa Romeo database. From 2021 authors can self-archive article postprints and editorial versions (under the CC BY 4.0 licence). Articles from earlier years (available under the CC BY-NC-ND 4.0 licence) can only be self-archived as editorial versions.
