Preconsolidation stress of gibbsitic and kaolinitic Oxisols under a multipractice conservationist coffee system

Autor: Carla Eloize Carducci, Geraldo César de Oliveira, Walmes Marques Zeviani, Henrique Aparecido Laureano, Samara Martins Barbosa, Eduardo da Costa Severiano, Nilton Curi
Jazyk: English<br />Portuguese
Rok vydání: 2021
Předmět:
Zdroj: Semina: Ciências Agrárias, Vol 42, Iss 3 (2021)
Druh dokumentu: article
ISSN: 1679-0359
1676-546X
DOI: 10.5433/1679-0359.2021v42n3p1049
Popis: Our goal was to analyze the impact of a multipractice soil conservationist system on coffee production in tropical soils (LATOSSOLO VERMELHO-AMARELO caulinítico/kaolinitic Haplustox and LATOSSOLO VERMELHO-gibbsítico/gibbsitic Acrustox soils) in Minas Gerais, Brazil. In the experimental area, the soil management involved a set of multiple conservationist practices during cultivation for more than 3.5 yrs. Soil samples were collected at 0-5, 10-15, and 20-25 cm depths at two positions: within planting rows and between rows. The soil physical and mechanical properties were determined, with a focus mainly on the preconsolidation stress model (preconsolidation stress versus matric tension). For the purpose of analysis, a split-split plot experimental design was implemented. A linear mixed regression (LMR) model was fitted, and Wald’s test was performed (P < 0.05). An improvement of soil physical quality for both Oxisols was observed at the planting row position. The effects of multipractice soil management after 3.5 yrs of cultivation in association with increased gibbsite content could promote new soil structure organization, as revealed by LMR, resulting in more resilient soils (between rows) and increasing the resistance to external pressures on gibbsitic Acrustox soils. Overall, the findings herein are in concordance with global trends towards conservationist practices that may alleviate soil compaction in agricultural systems to maintain environmental sustainability.
Databáze: Directory of Open Access Journals
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