Using Soil Apparent Electrical Conductivity (ECa) to Assess Responsiveness of Nitrogen Rates and Yield in Brazilian Sugarcane Fields

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorSanches, Guilherme Martineli-
Autor(es): dc.creatorFaria, Hugo Miranda-
Autor(es): dc.creatorOtto, Rafael-
Autor(es): dc.creatorNeto, Almir Salvador-
Autor(es): dc.creatorCorá, José Eduardo-
Data de aceite: dc.date.accessioned2025-08-21T16:09:47Z-
Data de disponibilização: dc.date.available2025-08-21T16:09:47Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/agronomy15030606-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307093-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307093-
Descrição: dc.descriptionThe 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.-
Descrição: dc.descriptionSoil Science Department Luiz de Queiroz College of Agriculture University of São Paulo, SP-
Descrição: dc.descriptionSoil Science Department School of Agricultural and Veterinary Studies São Paulo State University, SP-
Descrição: dc.descriptionSoil Science Department School of Agricultural and Veterinary Studies São Paulo State University, SP-
Idioma: dc.languageen-
Relação: dc.relationAgronomy-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectnitrogen-
Palavras-chave: dc.subjectprecision agriculture-
Palavras-chave: dc.subjectproximal soil sensing-
Palavras-chave: dc.subjectsite-specific management-
Título: dc.titleUsing Soil Apparent Electrical Conductivity (ECa) to Assess Responsiveness of Nitrogen Rates and Yield in Brazilian Sugarcane Fields-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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