| Full text | |
| Author(s): |
da Silva, Amanda Manduca Rosa
[1]
;
Lopes, Iva Guidini
[2]
;
Braos, Lucas Boscov
[1, 3]
;
da Cruz, Mara Cristina Pessoa
[1]
Total Authors: 4
|
| Affiliation: | [1] UNESP, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil
[2] UNESP, Ctr Aquicultura, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil
[3] Inst Fed Educ Ciencia & Tecnol Sul Minas Gerais, Campus Machado, Rodovia Machado Paraguacu, Km 3, Machado, MG - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | SUGAR TECH; v. 22, n. 6 JUL 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Ethanol production is responsible for the generation of significant amounts of vinasse, a liquid organic waste that contains high concentrations of nitrogen (N). Its direct application in the soil is widely performed in agriculture, but the vinasse N transformations that occurs in the soil remains poorly understood. This study aimed at evaluating N mineralization after applying vinasse doses (0, 75 and 150 m(3) ha(-1)) in soils with distinct textures (sandy, sandy clay and clayey). The absorption of N by sugarcane plants was also evaluated in a pot experiment, combining the same factors (doses and soils) considered in the mineralization experiment, aiming at correlating the quantities of mineralized N with the N absorbed by the plants. In the first 42 days of incubation, N immobilization was observed in all soils and vinasse doses, with higher values of mineralized N being registered in the first 14 days in the sandy soil. Furthermore, an increase in the potentially mineralizable N was observed in all soils, when increasing doses were considered, while the half-life time augmented with the escalation of the clay content in the soils. A positive correlation between absorbed N and the dry matter of sugarcane plants was found, while negative correlations were observed between absorbed N and mineralized N after 42 days, and between absorbed N and potentially mineralizable N. (AU) | |
| FAPESP's process: | 18/16216-6 - Nitrogen mineralization in soils fertilized with vinasse |
| Grantee: | Amanda Manduca Rosa da Silva |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |