Effects of nitrogen fertilization on yield components in a corn-palisadegrass intercropping system
Year: 2017
Type: article
Abstract: Pasture and grain crop intercropping is considered an alternative for increasing biomass production during the winter periods in Brazil for the establishment of no-tillage systems.We studied nitrogen (N) fertilization rates in a corn-palisadegrass intercropping system that would allow both corn and biomass production without a reduction in corn yield.A field trial was carried out in São Desidério, Bahia -Brazil using a complete block experimental design with a 5 x 2 factorial layout with two factors: N rate (control, 50, 100, 150, and 200 kg ha -1 N) and two cropping systems (corn with or without palisadegrass).Both corn and palisadegrass were sown simultaneously with N fertilizer applied at sowing.The measurements included corn biomass, grain yield and N uptake.In addition, palisadegrass biomass was assessed at corn harvest and at three consecutive times during the winter.There was an interaction between N rates and the intercropping system.Grain yield was affected by intercropping when N fertilizer rates were lower than 100 kg ha -1 , but above that rate, corn grain yield reached 10,000 kg ha -1 and was similar with or without palisadegrass.Nitrogen fertilizers also positively affected corn N uptake.There was no residual effect of N fertilization on palisadegrass biomass production during the sampling periods.However, the biomass of the palisadegrass increased during the winter period and reached 5,000 kg ha -1 of dry matter by the following season.There was no corn yield reduction when corn was intercropped with palisadegrass using nitrogen rates above 100 kg ha -1 .In addition, it is possible to increase biomass production for the establishment of no-tillage systems in Brazil.
Authors: Embrapa Pesca e Aquicultura - Quadra 104 Sul, Av. LO 1, Nº 34, Conjunto 4. CEP 77020-02. Palmas, TO, Brasil, Rodrigo Estevam Munhoz de Almeida, José Laércio Favarin, Departamento de Produção Vegetal. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ-USP). Av. Padua Dias, 11. CEP 13418-900, Piracicaba,SP, Brazil, Rafael Otto, Departamento de Ciência do Solo. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ/USP). Av. Padua Dias, 11. CEP 13418-900. Piracicaba, SP, Brazil, Clovis Pierozan Junior, Departamento de Produção Vegetal. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ-USP). Av. Padua Dias, 11. CEP 13418-900, Piracicaba,SP, Brazil, Silas Maciel de Oliveira, Departamento de Produção Vegetal. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ-USP). Av. Padua Dias, 11. CEP 13418-900, Piracicaba,SP, Brazil, Tiago Tezotto, Departamento de Produção Vegetal. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ-USP). Av. Padua Dias, 11. CEP 13418-900, Piracicaba,SP, Brazil, Bruno Cocco Lago, Departamento de Produção Vegetal. Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ-USP). Av. Padua Dias, 11. CEP 13418-900, Piracicaba,SP, Brazil
Institutions: Embrapa Pesca e Aquicultura, Universidade de São Paulo
Language: English
Subfield: Agronomy and Crop Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: bronze
Funder: Fundação Agrisus
OpenAlex ID: W2610732896