Foliar Fertilization Improves the Nitrogen Nutrition of Sugarcane

Joel José de Andrade (), Emídio Cantídio Almeida de Oliveira (), Amanda Michele dos Santos Lima, Gabriela Priscila Sena Amorim, Ester Souza Oliveira, Fernando José Freire, Wagner Sandro de Moura Adelino and Emídio Cantídio Almeida de Oliveira Filho
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Joel José de Andrade: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Emídio Cantídio Almeida de Oliveira: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Amanda Michele dos Santos Lima: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Gabriela Priscila Sena Amorim: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Ester Souza Oliveira: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Fernando José Freire: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil
Wagner Sandro de Moura Adelino: Japungu Agroindutrial, Santa Rita 58300-970, Brazil
Emídio Cantídio Almeida de Oliveira Filho: Department of Agronomy, Postgraduate Program in Soil Science, Universidade Federal Rural de Penambuco, Recife 52171-900, Brazil

Agriculture, 2024, vol. 14, issue 11, 1-12

Abstract: Increasing the recovery of N fertilizer (RNf) is the main challenge in managing nitrogen fertilization in sugarcane. This study aimed to evaluate the efficiency of complementary foliar fertilization in managing nitrogen nutrition in sugarcane. Four fertilization managements, combining soil (5.0 and 4.5 g plot −1 of N) and foliar (1.0 and 1.5 g plot −1 of N) fertilization in up to two application events (0.5 + 0.5 and 0.75 + 0.75 g plot −1 of N), were compared with conventional fertilization (6.0 g plot −1 of N in soil). The change from 6.0 g plot −1 to 4.5 g plot −1 of N reduced the RNf by 46% before the first foliar fertilization. The RNf (26%) was similar between managements after the first foliar fertilization. After the second foliar fertilization, the RNf was 38% higher than that for conventional management. The accumulation of N in the aerial part of sugarcane was similar between managements until the first foliar fertilization. After the second foliar fertilization, the accumulation of N increased by 3.5% with foliar fertilization. The biomass accumulated by the managements was similar before and after the first and second foliar fertilization. The splitting of foliar fertilization increased the accumulation of N and RNf by 22% and 24%, respectively. The fertilization management with 4.5 g plot −1 of N applied to the soil, with two applications of 0.75 g plot −1 of N on the leaf, obtained greater accumulations of N and RNf. Foliar fertilization increases the efficiency of fertilization and improves the N nutrition of sugarcane.

Keywords: fertilization management; plant nutrition; foliar urea-N; recovery of N fertilizer; Saccharum spp. (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: 2024
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