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• W4313117922 abstract "LEAF GROWTH AND DEVELOPMENT OF SUGARCANE IRRIGATED AND FERTILIZED WITH DIFFERENT SOURCES AND DOSES OF NITROGEN ANA CAROLINA OLIVEIRA HORSCHUTZ1; FERNANDO NOBRE CUNHA1; MARCONI BATISTA TEIXEIRA1; EDSON CABRAL DA SILVA1; FERNANDO RODRIGUES CABRAL FILHO1; DANIELY KAREN MATIAS ALVES1 1Departamento de Hidráulica e Irrigação, Instituto Federal Goiano – Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP: 75.901-170, Rio Verde – GO, a.horschutz@hotmail.com, fernandonobrecunha@hotmail.com, marconi.teixeira@ifgoiano.edu.br, edsoncabralsilva@gmail.com, fernandorcfilho@hotmail.com, daniely_karen@hotmail.com. 1 ABSTRACT The objective of this study was to evaluate the effects of N sources and doses on the leaf growth and development of sugarcane irrigated (CTC-4 variety), in the cane-plant cycle, cultivated in a Red Oxisol of Cerrado (savannah) phase. The experiment was carried out under field conditions at Fazenda Rio Paraiso II, belonging to the Raízen Usina, in the municipality of Jataí, GO, southwest region of Goiás, Brazil. The experimental design used for the biometric growth assessments was a randomized block design, with three replicates, in a 4 × 2 × 4 subdivided scheme. The treatments were four doses of N (0, 60, 120 and 180 kg ha-1), two N sources (urea and ammonium nitrate) and four evaluation periods (210, 250, 290 and 330 days after planting - DAP). The increase of the nitrogen fertilizer rate provided an increase in leaf area. The highest leaf area was reached at 250 DAP. At 330 DAP, the dry mass of the pointer occurred. The sugarcane leaf area is greater with ammonium nitrate at a dose of 180 kg ha-1. Keywords: Saccharum spp., urea, ammonium nitrate, Oxisol. HORSCHUTZ, A. C. O.; CUNHA, F. N.; TEIXEIRA, M. B.; SILVA, E. C.; CABRAL FILHO, F. R.; ALVES, D. K. M. CRESCIMENTO E DESENVOLVIMENTO FOLIAR DA CANA-DE-AÇÚCAR IRRIGADA E ADUBADA COM DIFERENTES FONTES E DOSES DE NITROGÊNIO 2 RESUMO O objetivo deste estudo foi avaliar os efeitos de fontes e doses de N no crescimento e desenvolvimento foliar da cana-de-açúcar irrigada (variedade CTC-4), no ciclo de cana-planta, cultivada em um Latossolo Vermelho distroférrico, fase cerrado. O experimento foi conduzido em condições de campo, na Fazenda Rio Paraiso II, pertencente à Usina Raízen, no município de Jataí, GO, região sudoeste de Goiás, Brasil. O delineamento experimental utilizado para as avaliações biométricas de crescimento foi o de blocos casualizados, com três repetições, em esquema de parcelas subdivididas 4 × 2 × 4. Os tratamentos foram quatro doses de N (0, 60, 120 e 180 kg ha-1), duas fontes de N (ureia e nitrato de amônio) e quatro épocas de avaliação (210, 250, 290 e 330 dias após o plantio - DAP). O aumento da dose de adubação nitrogenada proporcionou aumento da área foliar. A maior área foliar foi atingida aos 250 DAP. Aos 330 DAP, ocorreu a maior massa seca do ponteiro. A área foliar da cana-de-açúcar é maior com nitrato de amônio na dose de 180 kg ha-1. Palavras-chave: Saccharum spp., ureia, nitrato de amônia, Latossolo." @default.
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• W4313117922 date "2022-06-29" @default.
• W4313117922 modified "2023-10-16" @default.
• W4313117922 title "LEAF GROWTH AND DEVELOPMENT OF SUGARCANE IRRIGATED AND FERTILIZED WITH DIFFERENT SOURCES AND DOSES OF NITROGEN" @default.
• W4313117922 doi "https://doi.org/10.15809/irriga.2022v27n2p296-310" @default.
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