Shear strength and preconsolidation Red Yellow Acrisol from Northeast semiarid under conventional and no-tillage management

Revista de Ciências Agrárias

Thereza Rhayane Barbosa Cavalcante¹  Karla Lúcia Batista Araújo¹  Carlos Alessandro Chioderoli¹  Elivânia Maria Sousa Nascimento¹  Marcelo Queiroz Amorim¹ 

[1] Universidade Federal do Ceará – UFC, Av. Mister Hull, s/n, Campus do Pici, Bloco 804, 60450-760, Fortaleza, CE, Brasil;

关键词: Machinery;    Cohesion;    Compaction;   

DOI  :  http://dx.doi.org/10.4322/rca.2501

来源: DOAJ

【 摘 要 】

Currently the bigger limitation of the agricultural production and the quality of the environment of the mechanized areas is the compaction. The objective of this work was to evaluate the shear strength and the preconsolidation of a Red yellow Acrisol soil of the northeast semiarid, under conventional and no-tillage management. The soil samples were subject to uniaxial compression test where static loads of 25, 50, 100, 200, 400 and 800 were appliedduring30minutes.Thetestsofdirectshearwererealizedwithapplyingloadsof 50, 100 and 200 kPa. The results showed that the maximum deformation, independent of management system, occurred in the three first minutes, of the application of the load. The shear stress increased as far as the normal tension was applied to the soil. The conventional managementwasmoresusceptibletopressuresappliedinthesoilwhencomparedtono-tillage system.

【 授权许可】

Unknown