| Texto completo | |
| Autor(es): |
Grande, Luiz Henrique Quecine
;
da Silva, Lucas Henrique Amaro
;
dos Santos, John Kennedy
;
de Alencar, Anaila Amaral
;
Pereira, Matheus Batista Neri
;
Macedo, Mariane Dias
;
Soltangheisi, Amin
;
Ruiz, Fabio Fiori
;
Bolonhezi, Denizart
;
de Moraes, Moacir Tuzzin
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SOIL & TILLAGE RESEARCH; v. 256, p. 12-pg., 2026-10-10. |
| Resumo | |
Conservation tillage systems contribute to preserving soil structure and water flux in grain crops, whereas few long-term studies have assessed impacts of no-tillage systems on sugarcane fields. We aimed to assess the impact of soil tillage systems, associated with varying degrees of compactness, on pore space and main hydraulic properties in the soil. The long-term experiment of sugarcane tillage systems, since 1993, cultivated in succession with soybean was evaluated. The tillage systems consisted of (i) packed soil samples as a proxy of recently tilled soils (T0) and immediate tillage effect, (ii) conventional tillage system, 5-years after soil mobilization (CT5), and (iii) no-tillage system with 31-years without soil disturbance (NT31). In the 31st year after the experiment was established, core (CT5 and NT31) and packed (T0) samples were collected at 0-20 cm depth. Soil hydraulic parameters were fitted using the van Genuchten-Mualem equation integrated with bulk density. The soil hydraulic properties (saturated and unsaturated), bulk density and pore distribution frequency were evaluated and discussed under a non-linear model for three degrees of soil compactness (i.e., 75 %, 85 %, and 95 %). The recently tilled soil showed lower total porosity, with macropore volume being 24.7-59.8 % smaller than CT5 and NT31 treatments, respectively, due to increments in soil degree of compactness, and a pore frequency restricted to narrow pores diameter range. The saturated soil hydraulic conductivity for CT5 and NT31 was 3.1-26.1 times greater than in recently tilled soil as degree of compactness increased, with larger differences for unsaturated hydraulic conductivity. There were slight differences in soil structure between the CT5 and NT31 treatments, indicating that, after 5 years without soil disturbances, the sugarcane fields have great potential to preserve and enhance soil structure and hydraulic properties. Thus, the adoption of no-tillage systems is the key factor in maintaining and restoring soil physical functions and sustainability. (AU) | |
| Processo FAPESP: | 23/10427-3 - Impacto do uso de braquiária na qualidade física do solo para o aprofundamento radicular de soja |
| Beneficiário: | Matheus Batista Néri Pereira |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 21/10573-4 - Centro de Pesquisa de Carbono em Agricultura Tropical (CCARBON) |
| Beneficiário: | Carlos Eduardo Pellegrino Cerri |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 24/15892-9 - Contribuição da estrutura do solo na mitigação dos estresses físicos ao alongamento radicular da cana-de-açúcar |
| Beneficiário: | Mariane Dias Macedo |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 25/06634-9 - Modelagem do crescimento radicular de cana-de-açúcar combinando a estrutura do solo a estresses físicos |
| Beneficiário: | Mariane Dias Macedo |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica |
| Processo FAPESP: | 24/05953-0 - Modelagem do crescimento radicular da cana-de-açúcar em função dos estresses mecânicos e hídricos no solo |
| Beneficiário: | Luiz Henrique Quecine Grande |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 23/11945-8 - Parametrização do impacto de bioporos em sistema de plantio direto na modelagem do crescimento radicular de soja e milho |
| Beneficiário: | John Kennedy dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |