Agronomía Costarricense ISSN Impreso: 0377-9424 ISSN electrónico: 2215-2202

OAI: https://www.revistas.ucr.ac.cr/index.php/agrocost/oai
Erosive processes in Andisols cultivated with onion (<i>Allium cepa</i> L.): Contribution of sediment adhered to the bulb to soil and nutrient loss
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Keywords

soil loss due to crop harvesting (SLCH)
soil erosion
soil conservation
mechanized tillage
organic matter
volcanic ash-derived soils
pérdida de suelo por cosecha del cultivo
erosión del suelo
conservación de suelos
labranza mecanizada
materia orgánica
suelos derivados de cenizas volcánicas

How to Cite

Marín Araya, S., Villatoro-Sánchez, M., & Camacho-Umaña, M. E. . (2024). Erosive processes in Andisols cultivated with onion (<i>Allium cepa</i> L.): Contribution of sediment adhered to the bulb to soil and nutrient loss . Agronomía Costarricense, 48(2), 45–63. https://doi.org/10.15517/rac.v48i2.62467

Abstract

Introduction. Soil loss is a natural and complex process that can be exacerbated by climatic conditions and agricultural practices such as tillage. One form of soil loss (which is not well-known) occurs due to sediment adhered to the product at harvest time, which is permanently lost from the fields. Quantifying this sediment is an additional factor to soil loss by erosion and the potential loss of nutrients from farmlands. Objective. To quantify the soil loss due to crop harvesting (SLCH) in two onion (Allium cepa L.) crop cycles under three mechanized tillage implements. Materials and methods. Field plots (240 m2 each) were established following a complete randomized block design, and further planted with onion. Sediment adhered to the surface of the bulbs at the time of harvest was collected, and SLCH values were estimated for the evaluated plots. Fertility analyses (chemical analysis extracted in KCl-Olsen and total C/N) were conducted on the obtained sediments to calculate the loss of nutrients and organic matter due to harvesting activities. Results and discussion. They were quantified sediment values between 594.71 ± 471.93 and 1083.94 ± 78.45 kg ha-1 cycle-1 that are irreversibly lost from the onion fields. Additionally, up to 3.04 ± 0.27 kg of N, 0.15 ± 0.02 kg of P, and 1.16 ± 0.12 kg of K per hectare per cycle can be lost. Conclusions. The results obtained are pioneering in the study of erosion and soil loss due to crop harvesting in Costa Rica and can serve as a reference for future soil management and conservation studies. 

 

https://doi.org/10.15517/rac.v48i2.62467
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