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Appelhans, S. C.; Barbagelata, P. A.; Melchiori, R. J. M.; Gutiérrez Boem, F. H.; & Caviglia, O. P. (2021)"Is the lack of response of maize to fertilization in soils with low Bray 1 - P related to labile organic phosphorus?". Journal of Soil Science and Plant Nutrition,21, (1),p.612–621

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Artículo
Título en inglés:
Is the lack of response of maize to fertilization in soils with low Bray 1 - P related to labile organic phosphorus?
Autor/es:
Appelhans, Stefania Carolina; Barbagelata, Pedro A.; Melchiori, Ricardo José Miguel; Gutiérrez Boem, Flavio Hernán; Caviglia, Octavio Pedro
Filiación:
Appelhans, Stefania Carolina. CONICET. Buenos Aires, Argentina.
Appelhans, Stefania Carolina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias. Paraná, Entre Ríos, Argentina.
Appelhans, Stefania Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná (EEA Paraná). Paraná, Entre Ríos. Argentina.
Barbagelata, Pedro A. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias. Paraná, Entre Ríos, Argentina.
Barbagelata, Pedro A. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná (EEA Paraná). Paraná, Entre Ríos. Argentina.
Melchiori, Ricardo José Miguel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná (EEA Paraná). Paraná, Entre Ríos. Argentina.
Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina.
Gutiérrez Boem, Flavio Hernán. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina.
Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes. Buenos Aires, Argentina.
Caviglia, Octavio Pedro. CONICET. Buenos Aires, Argentina.
Caviglia, Octavio Pedro. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias. Paraná, Entre Ríos, Argentina.
Año:
2021
Título revista:
Journal of Soil Science and Plant Nutrition
ISSN:
0718-9516
Volumen:
21
Número:
1
Páginas:
612–621
Temas:
RELATIVE YIELD; LABILE P; FERTILIZER RECOMMENDATION
Idioma:
Inglés
URL al Editor:

Resumen:

The usual soil test phosphorus (P) neglects the P supply from labile organic P (Po) fractions, which could explain the nonresponse of maize (Zea mays L.) in sites with soil P testing below the critical level. We aim to determine Po and inorganic P (Pi) in NaHCO3 extracts and in the coarse soil fraction (hereinafter, CF) from responsive and nonresponsive sites to P fertilization in maize. We then compare the classification errors of the Cate and Nelson method by comparing the relationship between maize relative yield and the soil Bray1-P concentration vs. the new proposed indices. The study included responsive and nonresponsive sites to P fertilization carried out across the Pampas Region in the center-east of Argentina. Treatments included four P fertilization rates: 0, 12, 24, and 36 kg P ha−1. The experiments were laid out in a randomized complete block design with three replicates. We determined Bray1-P, Pi, and Po in NaHCO3 extracts and in the coarse soil fraction. Sites non-responsive to P fertilization and with Bray1-P concentrations below the critical level showed 70% more Po in the coarse soil fraction (Po-CF) than sites with high crop response and similar Bray1-P level. However, Po-Bic alone did not improve the relationship with maize relative yield. Po-CF and Bray1-P included in a soil integrative P index improved the prediction of crop response to P fertilization and reduced classification errors, which suggests that Po-CF is a source of available P for the crops. The novelty reported in this study was to demonstrate the organic P contribution to relative yield by including it into an integrative soil testing. We find that nonresponsive sites to P fertilization, with low Bray1-P, were correctly classified when including Po-CF in a new soil test P. Improvements in the P fertilization diagnostic prescription tool contribute to an increase in economic profit and reduce environmental impact.

Citación:

---------- APA ----------

Appelhans, S. C.; Barbagelata, P. A.; Melchiori, R. J. M.; Gutiérrez Boem, F. H.; & Caviglia, O. P. (2021). Is the lack of response of maize to fertilization in soils with low Bray 1 - P related to labile organic phosphorus?. Journal of Soil Science and Plant Nutrition,21, (1),p.612–621
10.1007/s42729-020-00387-8

---------- CHICAGO ----------

Appelhans, Stefania Carolina, Barbagelata, Pedro A., Melchiori, Ricardo José Miguel, Gutiérrez Boem, Flavio Hernán, Caviglia, Octavio Pedro. 2021. "Is the lack of response of maize to fertilization in soils with low Bray 1 - P related to labile organic phosphorus?". Journal of Soil Science and Plant Nutrition 21, no.1:612–621.
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