Recovery of Residual Nitrogen (15N) from Urea in the First Ratoon of Irrigated Sugarcane
- 60 Downloads
Despite many losses, nitrogen may remain in the soil for more than one cycle. It can benefit the culture of sugarcane due to its longevity. The objectives of this study were to evaluate the yield of stalks and the recovery of residual N from urea applied to sugarcane (plant-cane cycle), which could be used by sugarcane ratoon subjected to different levels of water replacement and residual nitrogen doses. The experiment was conducted at an experimental area belonging to the Federal Institute Goiano, campus Rio Verde, Brazil, using plastic pots containing dystrophic Red Latosol from Cerrado and cattle manure. The experimental design was completely randomized with three replications analyzed in 3 × 3 split plots. The treatments consisted of three levels of water replacement (75, 50 and 25% of field capacity) and three residual N doses (60, 120 and 180 kg ha−1) in the form of urea enriched with 15N applied to plant-cane in a preceding cycle. Residual N doses influenced the stalk yield. The highest stalk yields was achieved by high water replacements. The nitrogen recovery was high in the residual N dose of 60 kg ha−1 initially applied to plant-cane when associated with water replacement at 75%. Regardless of the N dose applied, the use of residual N was less than 7.06% of the amount originally applied to plant-cane.
KeywordsCerrado Nitrogen use efficiency Red Latosol Saccharum spp. Stalk yield 15N isotope dilution
To the Brazilian National Council for Scientific and Technological Development (CNPq) for funding the current study, to the Brazilian Coordination for Updating of Higher Education Personnel (CAPES), to Goiano Federal Institute, Campus Rio Verde, GO, Brazil (IFgoiano) and to Foundation for Support of Research in the state of Goias (FAPEG).
Compliance with Ethical Standards
Conflict of interest
The authors declare that there is no conflict of interest.
- Bastos, A.V.S., M.V. da Silva, E.C. da Silva, M.B. Teixeira, T. Muraoka, F.A.L. Soares, and R.D. Coelho. 2016. Agroindustrial yield of sugarcane grown under different levels of water replacement and nitrogen fertilization. African Journal of Agricultural Research 11: 2623–2629.CrossRefGoogle Scholar
- Barrie, A., and S.J. Prosser. 1996. Automated analysis of light–element stable isotopes by isotope ratio mass spectrometry. In Mass spectrometry of soils, eds. by T.W. Boutton, and S. Yamsahi, 1–46. New York: Marcel Dekker.Google Scholar
- Castro, S.G.Q., S.T. Decaro Jr., H.C.J. Franco, P.S.G. Magalhães, A. Garside, and M.A. Mutton. 2016. Best practices of nitrogen fertilization management for sugarcane under green cane trash blanket in Brazil. Sugar Tech 19: 1–6.Google Scholar
- Padrón, R.A.R., H.M.C.M. Nogueira, R.R. Cerquera, G.D. Albino, and C.U. Nogueira. 2015. Caracterização físico-hídrica do solo argissolo amarelo para estabelecimento de projeto e manejo da irrigação. Acta Iguazu 4: 36–47.Google Scholar
- Santos, H.G., P.K.T. Jacomine, L.H.C. Anjos, V.A. Oliveira, J.F. Lumbreras, M.R. Coelho, J.A. Almeida, T.J.F. Cunha, and J.B. Oliveira. 2013. Sistema brasileiro de classificação de solos. Brasília: Embrapa.Google Scholar
- Trivelin, P.C.O. 2000. Utilização do nitrogênio pela cana-de-açúcar: três casos estudados com o uso do traçador 15N. Thesis. Centro de Energia Nuclear na Agricultura Universidade de São Paulo, Piracicaba.Google Scholar
- Trivelin, P.C.O., M.D. Oliveira, A.C. Vitti, G.D.C. Gava, and J.A. Bendassolli. 2002. Nitrogen losses of applied urea in the soil-plant system during two sugar cane cycles. Brazilian Agricultural Research 37: 193–201.Google Scholar
- Vitti, A.C., P.C.O. Trivelin, G.J.C. Gava, C. Penatti, I.R. Bologna, C.E. Faroni, and H.C.J. Franco. 2007. Sugar cane yield related to the residual nitrogen from fertilization and the root system. Brazilian Agricultural Research 42: 249–256.Google Scholar