NDLI: Row spacing and nitrogen fertilization as affecting upland rice development under no-tillage

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Row spacing and nitrogen fertilization as affecting upland rice development under no-tillage

Content Provider	Semantic Scholar
Author	Arf, Orivaldo Nascente, Adriano Stephan Lacerda, Mabio Chrisley
Copyright Year	2015
Abstract	Submetido em 25/02/2014 e aprovado em 11/08/2015. 1 Universidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Fitotecnia, Tecnologia de Alimentos e Socio-Economia, Ilha Solteira, Sao Paulo, Brasil. arf@agr.feis.unesp.br 2 Universidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Fitossanidade, Engenharia Rural e Solos, Ilha Solteira, Sao Paulo, Brasil. ricardo@agr.feis.unesp.br 3 Embrapa Arroz e Feijao, Santo Antonio de Goias, Goias, Brasil. adriano.nascente@embrapa.br 4 Embrapa Arroz e Feijao, Santo Antonio de Goias, Goias, Brasil. mabio.lacerda@embrapa.br Autor para correspondencia: adriano.nascente@embrapa.br Espacamento e adubacao nitrogenada afetando o desenvolvimento do arroz de terras altas sob plantio direto A produtividade de graos do arroz e resultante da interacao entre o ambiente e o cultivar utilizado. Entre os fatores que influenciam essa produtividade estao o arranjo das plantas no campo e a adubacao nitrogenada. O objetivo deste trabalho foi determinar os efeitos do espacamento entre fileiras e da adubacao nitrogenada na altura e acamamento de plantas, nos componentes de producao e produtividade e na qualidade industrial de graos de arroz de terras altas, cultivado no sistema plantio direto. O experimento foi desenvolvido durante a safra agricola 2010/ 2011, em condicoes de campo, no municipio de Selviria, MS. O delineamento experimental foi em blocos completos casualizados, no esquema fatorial 2 x 4, com quatro repeticoes. Os tratamentos constaram de combinacoes entre os espacamentos entre fileiras (0,35 e 0,50 m) e as doses de N aplicadas na semeadura (0, 40, 80 e 120 kg ha). O menor espacamento entre fileiras condicionou menor altura de plantas de arroz, maior numero de paniculas m, maior fertilidade das espiguetas e consequentemente maior produtividade de graos de arroz. O incremento das doses de N na semeadura proporcionou maior altura e acamamento de plantas de arroz, ocasionando reducao da produtividade e da massa hectolitrica de graos da cultura. Espacamento entre fileiras e nitrogenio nao alteram a qualidade de graos do arroz. Palavras-chave: Oryza sativa L., nitrogenio, arranjo espacial de plantas, SPD, cerrado. Orivaldo Arf, Ricardo Antonio Ferreira Rodrigues2, Adriano Stephan Nascente3, Mabio Chrisley Lacerda http://dx.doi.org/10.1590/0034-737X201562050008 Row spacing and nitrogen fertilization as affecting upland rice development under no-tillage Rice grain yield is the result of the interaction between the environment and cultivar. One of the factors that influence yield is the arrangement of plants in the field and nitrogen fertilizer. The objective of the study was to determine the effect of row spacing and nitrogen fertilization on plant height and lodging, yield components, grain yield and quality of upland rice crop grown in a no-tillage system. The experiment was conducted during the growing season 2010/2011 under field conditions in Selviria, MS, Brazil. The experimental design was a randomized complete block design in a factorial 2 x 4 with four replications. The treatments consisted of the combination of row spacing (0.35 and 0.50 m) with the N rates applied at sowing (0, 40, 80 and 120 kg ha). The lower row spacing provided shorter rice plants, higher number of panicles m and spikelet fertility and consequently higher grain yield of rice. The increased rates of N in the sowing provided taller rice plants and lodging, leading to reduced crop yield and hectoliter mass of grains. Row spacing and nitrogen did not affect grain quality of rice.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ainfo.cnptia.embrapa.br/digital/bitstream/item/130914/1/Nascente-Revista-Ceres.pdf
Alternate Webpage(s)	http://www.scielo.br/pdf/rceres/v62n5/2177-3491-rceres-62-05-00475.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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