Dinâmica do nitrogênio em um sistema de produção usando braquiária como planta de cobertura

• Grant number: 17/02517-1
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: April 01, 2017
• End date: April 30, 2019
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Agreement: BBSRC, UKRI ; CONFAP ; Newton Fund, with FAPESP as a partner institution in Brazil
• Principal Investigator: Ciro Antonio Rosolem
• Grantee: Eduardo Mariano
• Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
• Associated research grant: 15/50305-8 - A virtual joint centre to deliver enhanced nitrogen use efficiency via an integrated soil-plant systems approach for the uk & brasil. (fapesp-bbsrc), AP.TEM
• Associated scholarship(s): 18/14218-1 - Rhizodeposition of tropical forage grasses: a 14C pulse-labeling study, BE.EP.PD

Abstract

Abstract: There is evidence that Brachiaria ruziziensis affects nitrogen dynamics in the soil by modifying microbiota composition, affecting maize response to the fertilizer. This project will deepen studies on the N fate in the soil in the presence of B. ruziziensis and other grasses, considering deep leaching and gaseous losses.Objectives: To understand N dynamics and determine N fate in cropping systems using grasses as cover crops, as well as its effects on maize response to N.Work plan: A field experiment will be conducted using different grasses in rotation with soybean and maize. Maize response to N will be assessed. Nitrogen dynamics in the system will be studied using 15N labeled fertilizer; N leaching will be determined by analyzing soil solution 80 cm deep in the soil profile and water deep drainage, N emissions as ammonium and nitrous oxide will be monitored.Justification: This project is important to understand N fate in the soil in a crop rotation very important in tropical areas. Nitrogen Use efficiency. The collaboration of a Pos-Doc will be an important part of the general project NUCLEUS, and particularly of WP3.The use of a particular grass, while important for soil conservation may impair maize response to N, decreasing

Scientific publications

(5)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

GRASSMANN, CAMILA S.; MARIANO, EDUARDO; ROCHA, KASSIANO F.; GILLI, BRUNO R.; ROSOLEM, CIRO A.. Effect of tropical grass and nitrogen fertilization on nitrous oxide, methane, and ammonia emissions of maize-based rotation systems. Atmospheric Environment, v. 234, AUG 1 2020. (15/50305-8, 16/25253-7, 17/02517-1)

BARCELOS, JESSICA P. Q.; MARIANO, EDUARDO; JONES, DAVEY L.; ROSOLEM, CIRO A.. Topsoil and subsoil C and N turnover are affected by superficial lime and gypsum application in the short-term. SOIL BIOLOGY & BIOCHEMISTRY, v. 163, DEC 2021. (17/02517-1, 15/50305-8, 17/00398-5)

BARCELOS, JESSICA P. Q.; SANCHEZ-RODRIGUEZ, ANTONIO RAFAEL; BARGIELA, RAFAEL; MARIANO, EDUARDO; GLOYSHINA, OLGA V.; JONES, DAVEY L.; ROSOLEM, CIRO A.. Lime, gypsum, and nitrogen as drivers to increase the abundance of soil fungi and N-cycling microorganisms in integrated agricultural systems. APPLIED SOIL ECOLOGY, v. 202, p. 10-pg., 2024-07-24. (15/50305-8, 17/02517-1, 17/00398-5)

GRASSMANN, CAMILA S.; MARIANO, EDUARDO; DINIZ, PRISCILA P.; BORGES, BEATRIZ M. F.; BORGES, CLOVIS D.; TSAI, SIU M.; ROSOLEM, CIRO A.. Functional N-cycle genes in soil and N2O emissions in tropical grass-maize intercropping systems. SOIL BIOLOGY & BIOCHEMISTRY, v. 169, p. 12-pg., 2022-06-01. (15/50305-8, 16/25253-7, 17/02517-1)

ROCHA, KASSIANO F.; MARIANO, EDUARDO; GRASSMANN, CAMILA S.; TRIVELIN, PAULO C. O.; ROSOLEM, CIRO A.. Fate of N-15 fertilizer applied to maize in rotation with tropical forage grasses. FIELD CROPS RESEARCH, v. 238, p. 35-44, MAY 15 2019. (15/50305-8, 16/25253-7, 17/02517-1)