Nitrogen management in corn, with or without inoculation with Azospirillum spp

• Grant number: 12/19114-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): November 01, 2012
• Effective date (End): October 31, 2013
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Marcelo Andreotti
• Grantee: Vanessa Zirondi Longhini
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

Corn is a crop of major economic importance in Brazil and the world, whether for human or for animal nutrition. It is one of the most demanding crops in fertilizer, especially nitrogen. Nitrogen is one of the nutrients that provides the most significant effects on increasing the yield, besides composing proteins, enzymes and nucleic acids. However, nitrogen fertilizers used extensively in modern agriculture are derived mostly from fossil fuels are non-renewable sources, besides being one of the most expensive inputs in the production cost of corn. Consequently, new technologies are being used to decrease the use of mineral nutrients derived from non-renewable material, as is the case of diazotrophs bacteria. Among these bacteria, there are the genus Azospirillum, which is fixing atmospheric N2, which is associated with the rhizosphere of plants can contribute to the nitrogen nutrition of maize. Therefore, the aim of this study is to evaluate doses of nitrogen in coverage, with and without seed inoculation with nitrogen fixing bacteria Azospirillum brasiliense harvests in spring/summer 2012/13 in single corn, and corn in autumn 2013, intercropped with Brachiaria brizantha cv. Xaraés on yield components and grain yield of maize.(AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LONGHINI, VANESSA ZIRONDI; ROSSINI DE SOUZA, WESLEY CARLOS; ANDREOTTI, MARCELO; SOARES, NATALIA DE AVILA; COSTA, NIDIA RAQUEL. INOCULATION OF DIAZOTROPHIC BACTERIA AND NITROGEN FERTILIZATION IN TOPDRESSING IN IRRIGATED CORN. REVISTA CAATINGA, v. 29, n. 2, p. 338-347, 2016. (12/19114-3)

LONGHINI, VANESSA ZIRONDI; ANDREOTTI, MARCELO; SOUZA, WESLEY CARLOS ROSSINI DE; COSTA, NIDIA RAQUEL; MINHOTO TEIXEIRA FILHO, MARCELO CARVALHO; MONTANARI, RAFAEL. Nitrogen fertilization and inoculation with diazotrophic bacteria in corn intercropped with xaraes grass. REVISTA BRASILEIRA DE CIENCIAS AGRARIAS-AGRARIA, v. 12, n. 3, p. 8-pg., 2017-01-01. (12/19114-3)