Phosphorus Agronomic Efficiency Index Under Different Fertilizer Application Methods in Two Cycles of Sugarcane Cultivated in Tropical Soils

• Published in: Communications in Soil Science and Plant Analysis Vol. 54; no. 17; pp. 2376 - 2393
• Main Authors: Batista da Costa, Daniela, Freire, F. J., de Andrade, J. J., da Silva, S. R. V., dos Santos, R. L., Santos, H. C., de Oliveira, A. C., Simões Neto, D. E.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 25-09-2023; Taylor & Francis Ltd
• Subjects: Agronomy; Clay; Clay minerals; Clay soils; Efficiency; Fertilizer application; Fertilizers; Fractionation; Growth, yield, and technological quality of the sugarcane; localized and non-localized fertilizer application; Mineralogy; Parameters; Phosphorus; phosphorus fertilization; Residual effects; Saccharides; Sandy soils; Soil; Soil mineralogy; Soils; Sugarcane; sugarcane fertilization; Tropical environments; Tropical soils
• ISSN: 0010-3624; 1532-2416; 1532-4133
• DOI: 10.1080/00103624.2023.2223570

Our objective was to evaluate the agronomic and industrial sugarcane parameters under different P application methods in two cycles of sugarcane cultivated in tropical soils with different mineralogic composition. The experiment was carried out in sandy (PVAd
1
), sandy-clay (PAdx) and sandy-clay-loam (PVAd
2
) soils during two sugarcane cycles (plant-cane and ratoon-cane). We tested the localized and non-localized application methods of P with and without fractionation of the P rate. We evaluated extraction, allocation, and efficiency use of P, as well as the growth, yield, and technological quality of the sugarcane. The non-localized application provided greater P extraction, regardless of the soil mineralogy, however showed a greater residual effect in ratoon-cane in the PVAd
1
. The non-localized application increased the P content in the juice in plant-cane in the PVAd
2
but reduced the recoverable sugar. The agronomic efficiency index showed that the localized application is suitable for PVAd
2
while the non-localized application is recommended for PVAd
1
in plant-cane. Thus, the non-localized application and the P fractionation showed better agronomic and industrial parameters in tropical soils, especially on the sandy despite the localized application being the traditional method.