Artículo
Exploring maize grain yield response to boron fertilization in Mollisols: Critical thresholds and predictive models
Barbieri, Pablo Andres
; Crespo, Cecilia
; Wyngaard, Nicolás
; Eyherabide, Mercedes; Martínez Cuesta, Nicolás
; Reussi Calvo, Nahuel Ignacio
; Sainz Rozas, Hernan Rene
; Angelini, Hernán Pablo; Carciochi, Walter Daniel
; Gudelj, Vicente; Espósito Goya, Gabriel Pablo; Salvagiotti, Fernando; Ferraris, Nestor Gustavo; Sánchez, Héctor; Ventimiglia, Luis; Torrens Baudrix, Lisandro
Fecha de publicación:
06/2024
Editorial:
Wiley VCH Verlag
Revista:
Journal of Plant Nutrition and Soil Science - Zeitschrift fur Pflanzenernahrung und Bodenkunde
ISSN:
1436-8730
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Background: There are no extractable boron (B) thresholds for maize (Zea mays L.) in Mollisols determined by field calibrations. Aims: Our objectives were to: (1) explore maize grain yield response to B fertilization, (2) calibrate the soil hot water extractable B (HW-B) as a predictor of maize response to B fertilization under field conditions, and (3) assess the contribution of clay, pH, and soil organic matter (SOM) as predictive variables of maize response to B fertilization. Methods:We conducted 53 field trials with 2 treatments: with and without B fertilization. At all sites, we measured clay, SOM, pH, and HW-B at a 0–20 cm depth. Results: Maize grain yield ranged from 5.34 to 17.35 Mg ha−1. Grain yield response to fertilization was observed in 6 out of 53 sites (11.3%). In responsive sites, average grain yield response was 1.0 Mg ha−1. Multiple regression models to predict yield response to B addition that included soil, pH, and SOM only explained 19% of the variability. The critical soil HW-B concentration threshold was 0.78 mg kg−1, correctly diagnosing 79% of the site-years. Conclusion: The critical threshold for maize B levels resulting from our field study is the first of its kind in Mollisols. This threshold will improve the identification of soils deficient in B.
Palabras clave:
boron
,
maize
,
fertilization
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Articulos(CCT - MAR DEL PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Citación
Barbieri, Pablo Andres; Crespo, Cecilia; Wyngaard, Nicolás; Eyherabide, Mercedes; Martínez Cuesta, Nicolás; et al.; Exploring maize grain yield response to boron fertilization in Mollisols: Critical thresholds and predictive models; Wiley VCH Verlag; Journal of Plant Nutrition and Soil Science - Zeitschrift fur Pflanzenernahrung und Bodenkunde; 6-2024; 1-11
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