A. Saa Requejo
Technical University of Madrid
12 Papers
133 Citations
A. Saa Requejo is an academic researcher from Technical University of Madrid. The author has contributed to research in topics: Loam & Tillage. The author has an hindex of 9, co-authored 12 publications.
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Papers
Tillage and soil type effects on soil surface roughness at semiarid climatic conditions
TL;DR: In this paper, a pin meter was developed to measure soil surface roughness, based on its adaptability to field conditions, and a micro-relief index was also developed for the interpretation of the data based on the standard deviation (S.D.) and the coefficient of variation (CV).
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Multifractal Analysis of Soil Surface Roughness
TL;DR: In this paper, the authors developed a method based on the multifractal analysis (MFA) of soil elevation measurements collected at the intersections on a 2- by 2-cm 2 grid in a 200- by 200cm 2 plot.
Shadow analysis: A method for measuring soil surface roughness
TL;DR: In this paper, a micro-topographic shadow analysis based on the interpretation of microtopographic shadows is proposed for measuring soil surface roughness in the field after tillage, and the results obtained with this method were compared to the statistical indexes used to interpret field readings recorded by a pin meter.
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Assessing soil surface roughness decay during simulated rainfall by multifractal analysis
E. Vidal Vázquez,R. García Moreno,José Garcia Vivas Miranda,M. C. Díaz,A. Saa Requejo,J. Paz Ferreiro,Ana M. Tarquis +6 more
TL;DR: In this paper, the effect of simulated rainfall on microrelief decay was assessed by multifractal analysis performed with the box-count algorithm, where the authors employed the multifractals approach to characterize topographical point elevation data sets acquired by high-resolution laser scanning for assessing the impact of rainfall on soil surface micro-relief.
Shadow analysis of soil surface roughness compared to the chain set method and direct measurement of micro-relief
TL;DR: In this paper, shadow analysis was used to measure the soil surface roughness in a sandy clay loam field using different tillage tools (chisel, tiller and roller) and in a control of 4 m2 surface plots divided into subplots of 1 m2.