2014
DOI: 10.15361/1984-5529.2014v42n3p233-241
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Efeito do nitrogênio em cobertura na produtividade de girassol, no Estado do Tocantins

Abstract: ResumoObjetivou-se avaliar respostas de híbridos de girassol sob doses de nitrogênio, em época de segunda safra, em 2013, na região sul do Estado do Tocantins. O experimento foi conduzido na área experimental da Universidade Federal do Tocantins, Câmpus de Gurupi -TO. O delineamento estatístico adotado foi o de blocos ao acaso, no esquema fatorial 3 x 5, com cinco repetições. O primeiro fator correspondeu aos híbridos (Helio 250, Helio 251 e Helio 360), o segundo, às cinco doses de nitrogê-nio em cobertura (0;… Show more

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“…The sunflower culture shows national average productivity of 1500 kg ha -1 (AGRIANUA L, 2012). However, if adequately managed, the productivity may increase to 1500 to 2200 kg ha -1 (Dos Santos et al, 2016;Oliveira et al, 2014;Porto et al, 2007). Under irrigation, grain yield is generally in the range of 2200 to 3000 kg ha -1 (Biscaro et al, 2008;Go mes et al, 2010;Guedes Filho et al, 2015;Schwerz et al, 2015), and can reach more than 4000 kg ha -1 in favorable soil and climatic conditions (Go mes et al, 2010;De Aquino et al, 2013), being able to reach 4.000 kg ha -1 in favorable edaphoclimatic conditions (Karam et al, 2007;Anastasi et al, 2010;Go mes et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…The sunflower culture shows national average productivity of 1500 kg ha -1 (AGRIANUA L, 2012). However, if adequately managed, the productivity may increase to 1500 to 2200 kg ha -1 (Dos Santos et al, 2016;Oliveira et al, 2014;Porto et al, 2007). Under irrigation, grain yield is generally in the range of 2200 to 3000 kg ha -1 (Biscaro et al, 2008;Go mes et al, 2010;Guedes Filho et al, 2015;Schwerz et al, 2015), and can reach more than 4000 kg ha -1 in favorable soil and climatic conditions (Go mes et al, 2010;De Aquino et al, 2013), being able to reach 4.000 kg ha -1 in favorable edaphoclimatic conditions (Karam et al, 2007;Anastasi et al, 2010;Go mes et al, 2012).…”
Section: Introductionmentioning
confidence: 99%