Influence of Azospirillum brasilense associated with silicon and nitrogen fertilization on macronutrient contents in corn

Open Agriculture

Gaspareto Rafaela Neris¹  Pereira Maikon Richer de Azambuja¹  Filho Marcelo Carvalho Minhoto Teixeira¹  Pereira Íngrid Torres¹  Galindo Fernando Shintate¹  Rodrigues Willian Lima¹  Neto Maurício Barco¹  Fernandes Guilherme Carlos¹  Boleta Eduardo Henrique Marcandalli¹  Rosa Poliana Aparecida Leonel¹  Buzetti Salatiér¹ 

[1] Department of Plant Health, Rural Engineering, and Soils, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Ilha Solteira, Sao Paulo State, Zip Code 15385-000, Brazil;

关键词: nutritional evaluations;    biological nitrogen fixation in grasses;    plant growth promoting bacteria;    silicon use;    nitrogen fertilization management;    zea mays l;   

DOI  :  10.1515/opag-2020-0013

来源: DOAJ

【 摘 要 】

Information regarding the interaction between biological nitrogen fixation (BNF) with Azospirillum brasilense inoculation and the use of silicon (Si) is needed. Silicon exerts numerous benefits on grasses, especially when the plants are subjected to biotic and abiotic stresses, affecting plant nutrition. The aim of this research was to determine if there is a synergistic effect between the inoculation with A. brasilense and Si use, on macro-nutrient content in corn shoot and root. The field trial was performed in Selvíria, Brazil, on a Typic Rhodic Hapludox soil under no-till system. The experimental design was a completely randomized block design with four replicates arranged in a 2 × 5 × 2 triple factorial arrangement, consisting of two soil acidity corrective sources (dolomitic limestone and Ca and Mg silicate as sources of Si); five N doses (0, 50, 100, 150 and 200 kg ha-1 applied in topdressing); with and without seed inoculation with A. brasilense. The inoculation favored N concentration in shoots and increased the N and S concentration even when associated to high N rates in topdressing. The Si as Ca and Mg silicate associated with the increment of N rates does not promote an increase in the macronutrients uptake. Although it did not favor the N use, the Si also did not negatively affect the benefits of the A. brasilense.

【 授权许可】

Unknown