Spatio-Temporal Disposition of Micronutrients in Green Bean Grown in Sandy Mulching Soils

Alfonso Llanderal, Pedro Garcia-Caparros, Juana Isabel Contreras, María Teresa Lao and María Luz Segura
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Alfonso Llanderal: Agronomy Department of Superior School Engineering, University of Almeria, CIAIMBITAL, Agrifood Campus of International Excellence ceiA3. Ctra. Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain
Pedro Garcia-Caparros: Agronomy Department of Superior School Engineering, University of Almeria, CIAIMBITAL, Agrifood Campus of International Excellence ceiA3. Ctra. Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain
Juana Isabel Contreras: Institute of Research and Training in Agriculture and Fishery (IFAPA), Junta of Andalusia, La Mojonera, 04745 Almería, Spain
María Teresa Lao: Agronomy Department of Superior School Engineering, University of Almeria, CIAIMBITAL, Agrifood Campus of International Excellence ceiA3. Ctra. Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain
María Luz Segura: Institute of Research and Training in Agriculture and Fishery (IFAPA), Junta of Andalusia, La Mojonera, 04745 Almería, Spain

Agriculture, 2022, vol. 12, issue 7, 1-11

Abstract: Currently, there is no information available about the spatio-temporal distribution of micronutrients in sandy mulching soils widely used in the southeast of Spain; therefore, in this experiment, we aimed to characterize the spatio-temporal distribution of micronutrients in the wet bulb zone in two sand-mulched soils. Four different factors were considered over the experiment: (a) soil model, (b) time sampling, (c) distance from the emitter, and (d) depth. Each soil was divided into four blocks and the soil sample per block was composed of 20 subsamples. The micronutrient concentration was determined in each soil sample through atomic absorption spectrometry determinations. To establish the relationship between factors, a multifactor ANOVA test analysis was conducted. The results obtained reported a higher micronutrient concentration in the soil profile than in the sand layer. Moreover, in the soil profile, there was a decrease in micronutrient concentration in distance for Fe (from 10.4 to 7.9 mg kg −1 ), Zn (from 4.0 to 3.5 mg kg −1 ), Mn (from 23.9 to 16.2 mg kg −1 ), and Cu forms (from 2.5 to 1.5 mg kg −1 ). Moreover, there was a decrease in micronutrients with depth for Fe (from 10.5 to 8.0 mg kg −1 ), Zn (from 4.0 to 3.7 mg kg −1 ), Mn (22.0 to 17.2 mg kg −1 ), and Cu (from 2.1 to 1.7 mg kg −1 ). Higher micronutrient concentration after green bean crop harvest was related to the highest organic matter content, with the following values for Fe (12.3 mg kg −1 ), Zn (4.0 mg kg −1 ), Mn (23.6 mg kg −1 ), and Cu (2.0 mg kg −1 ) in the soil profile. The fertigation management of the crop did not modify the micronutrient concentrations in distance in the sand layer due to the reduced exchange capacity of the sand with micronutrients.

Keywords: Phaseolus vulgaris; organic matter content; sand layer; soil depth; time of sampling; trace elements (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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