Nitrogen Utilization from Ammonium Nitrate and Urea Fertilizer by Irrigated Sugarcane in Brazilian Cerrado Oxisol

Nelmício Furtado da Silva, Edson Cabral da Silva, Takashi Muraoka, Marconi Batista Teixeira, Frederico Antonio Loureiro Soares, Fernando Nobre Cunha, Joseph Adu-Gyamfi and Wendson Soares da Silva Cavalcante
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Nelmício Furtado da Silva: Instituto Federal Goiano—Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP 75901-970 Rio Verde, GO, Brazil
Edson Cabral da Silva: Instituto Federal Goiano—Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP 75901-970 Rio Verde, GO, Brazil
Takashi Muraoka: Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Centenário, Numbe. 303, CEP 13416-000 Piracicaba, SP, Brazil
Marconi Batista Teixeira: Instituto Federal Goiano—Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP 75901-970 Rio Verde, GO, Brazil
Frederico Antonio Loureiro Soares: Instituto Federal Goiano—Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP 75901-970 Rio Verde, GO, Brazil
Fernando Nobre Cunha: Instituto Federal Goiano—Campus Rio Verde, Rodovia Sul Goiana, Km 01, CEP 75901-970 Rio Verde, GO, Brazil
Joseph Adu-Gyamfi: Soil and Water Management & Crop Nutrition Subprogram, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, IAEA, 1400 Vienna, Austria
Wendson Soares da Silva Cavalcante: Faculdade UniBRÁS-Rio Verde, R. Doze de Outubro, Number. 42, CEP 75906-577 Rio Verde, GO, Brazil

Agriculture, 2020, vol. 10, issue 8, 1-17

Abstract: Sugarcane is the most promising among renewable biofuel-producing crops. An adequate availability of water and nutrients, especially nitrogen (N), is of utmost importance. From the hypothesis that the source and the rate of N fertilization influence the N use efficiency of an irrigated soil–sugarcane system, this study aimed to evaluate the stalk and crop residues (pointer and leaves) yield, as well as the N utilization, from different rates of ammonium nitrate and urea by irrigated sugarcane in the cane plant cycle, using an 15 N isotopic dilution technique. The soil used for the experiment was an Oxisol (Rhodic Haplustox) Cerrado (savannah) phase. The experiment was carried out at a farm of the Raízen Mill, which was located in the municipality of Jataí, Goias State, Brazil. The sugarcane variety IACSP95–5000 was used in a randomized block design, with three replicates, four N rates (30, 60, 120, and 180 kg ha −1 ), and two fertilizer sources labeled with 15 N isotopes (urea and ammonium nitrate). The average value for N utilization was 60.17% for the ammonium nitrate source and 44.95% for urea. The responses in the percentage and quantity of N in the sugarcane from the fertilizer increase with the increasing N rate. The soil was the main N source for sugarcane. The higher stalk and pointer yield was recorded at the average rate of 143.61 kg N ha −1 . Further studies are needed to evaluate the residual effect of N in the next cycles.

Keywords: Saccharum spp.; stalk yield; N recovery; nitrogen-15; Oxisol; cerrado (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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