Considerations for unharvested plant potassium

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorIowa State University-
Autor(es): dc.creatorRosolem, Ciro A.-
Autor(es): dc.creatorMallarino, Antonio P.-
Autor(es): dc.creatorNogueira, Thiago A.R.-
Data de aceite: dc.date.accessioned2025-08-21T22:17:31Z-
Data de disponibilização: dc.date.available2025-08-21T22:17:31Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2020-12-13-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/978-3-030-59197-7_6-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246954-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246954-
Descrição: dc.descriptionPotassium (K) is found in plants as a free ion or in weak complexes. It is easily released from living or decomposing tissues, and it should be considered in fertilization programs. Several factors affect K cycling in agroecosystems, including soil and fertilizer K contributions, plant K content and exports, mineralization rates from residues, soil chemical reactions, rainfall, and time. Soil K+ ions can be leached, remain as exchangeable K, or migrate to non-exchangeable forms. Crop rotations that include vigorous, deep-rooted cover crops capable of exploring non-exchangeable K in soil are an effective strategy for recycling K and can prevent leaching below the rooting zone in light-textured soils. The amount of K released by cover crops depends on biomass production. Potassium recycled with non-harvested components of crops also varies greatly. Research with maize, soybean, and wheat has shown that 50-60% of K accumulated in vegetative tissues is released within 40-45 days. A better understanding of K cycling would greatly improve the efficacy of K management for crop production. When studying K cycling in agricultural systems, it is important to consider: (1) K addition from fertilizers and organic amendments; (2) K left in residues; (3) K partitioning differences among species; (4) soil texture; (5) soil pools that act as temporary sources or sinks for K. In this chapter, the role of cash and cover crops and organic residues on K cycling are explored to better understand how these factors could be integrated into making K fertilizer recommendations.-
Descrição: dc.descriptionSchool of Agricultural Sciences São Paulo State University-
Descrição: dc.descriptionDepartment of Agronomy Iowa State University-
Descrição: dc.descriptionSchool of Engineering São Paulo State University-
Descrição: dc.descriptionSchool of Agricultural Sciences São Paulo State University-
Descrição: dc.descriptionSchool of Engineering São Paulo State University-
Formato: dc.format147-162-
Idioma: dc.languageen-
Relação: dc.relationImproving Potassium Recommendations for Agricultural Crops-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCover crops-
Palavras-chave: dc.subjectK cycling-
Palavras-chave: dc.subjectK management-
Palavras-chave: dc.subjectPlant residues-
Título: dc.titleConsiderations for unharvested plant potassium-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.