System effects of conservation tillage on hillside soils properties in potato crop (Solanum tuberosum)

Abstract

In order to contribute to soil conservation on hillside slopes through tilling, technologies based on minimizing the movement of soil and establishing cover crops and organic fertilization with green fertilizers were used. A rotating system of green fertilizer potato-green fertilizer was established, using the seeds of the “parda pastosa’" potato and nine varieties of green manures and the physical, chemical and microbiological properties of the soil were evaluated. The proposed improved the apparent density, porosity, structural stability and infiltration of the soil. The greatest changes m apparent density were in HB14, which decreased from 1.14 Mg''m3 to 1.06 Mg''m3 and in PC19, which decreased from 0.84 Mg/m3 to 0.8 Mg'' m3. Porosity in HB14 increased from 49.13% to 52.72% and ít increased m PC10 from 57.22% to 59.27%. The structural stability of the soil improved from 0.929 mm to 2.014 mm in HB8 and in PCI from 1.48 mm to 2.25 mm The most notable changes in infiltration were in HB2, with an initial value of 22.57 cm/h and the final value of 138.07 cm/h. and in PC 1, with an initial value of 18.62 cm/h  and a final value of 63.21 cm/h.