| Texto completo | |
| Autor(es): |
Sanches, Guilherme Martineli
;
Faria, Hugo Miranda
;
Otto, Rafael
;
Neto, Almir Salvador
;
Cora, Jose Eduardo
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AGRONOMY-BASEL; v. 15, n. 3, p. 15-pg., 2025-02-28. |
| Resumo | |
The expansion of sugarcane production has led to increased nitrogen (N) fertilizer use, contributing to greenhouse gas emissions and environmental concerns. Optimizing N management is crucial for sustainable agriculture. Soil apparent electrical conductivity (ECa) has emerged as a valuable tool for mapping soil spatial variability and yield potential, potentially guiding more efficient fertilization strategies. This study evaluated sugarcane yield and N responsiveness across two areas with distinct soil types over two crop cycles. Experimental plots were classified into high (HC) and low (LC) ECa zones, with randomized blocks receiving four N rates and a control. Higher yields were generally observed in HC plots, except for the second ratoon in area 2 (Ultisol). HC plots required lower N rates to achieve maximum yield compared to LC plots. In area 1 (higher clay content), optimal N rates were lower than in area 2 (lower clay content), indicating that yield potential is linked to soil attributes and spatial variability. Although ECa alone may not define precise N doses, it effectively identifies zones with different yield potentials, supporting site-specific N management. These findings highlight the potential of ECa to improve nitrogen use efficiency and contribute to more sustainable sugarcane production. (AU) | |
| Processo FAPESP: | 18/10225-3 - Modelo de aplicação de nitrogênio para manejo localizado e sustentável das lavouras de cana-de-açúcar |
| Beneficiário: | Guilherme Martineli Sanches |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 16/13461-4 - Uso de tecnologias de sensoriamento remoto, modelagem e mapas de produtividade visando aumento da eficiência na adubação nitrogenada em cana-de-açúcar |
| Beneficiário: | José Eduardo Corá |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOEN - Temático |
| Processo FAPESP: | 22/15875-1 - Eficiência na adubação nitrogenada na cultura de cana-de-açúcar por meio da utilização de tecnologias de sensoriamento remoto, modelagem e de mapeamento da produtividade da cultura |
| Beneficiário: | Guilherme Martineli Sanches |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |