We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Site-Specific Management Zones Delineation Based on Apparent Soil Electrical Conductivity in Two Contrasting Fields of Southern Brazil.
- Authors
Bottega, Eduardo Leonel; Safanelli, José Lucas; Zeraatpisheh, Mojtaba; Amado, Telmo Jorge Carneiro; Queiroz, Daniel Marçal de; Oliveira, Zanandra Boff de
- Abstract
Management practices that aim to increase the profitability of agricultural production with minimal environmental impact must consider within-field soil variability, and this site-specific management can be addressed by precision agriculture (PA). Thus, this work aimed to investigate which key soil attributes are distinguishable management zones (MZ) delineated based on the soil apparent electrical conductivity (ECa), using fuzzy k-means, in two fields with contrasting soil textures in southern Brazil. For this, a grid scheme (50 × 50 m) was applied to measure ECa, conduct soil sampling for analysis, and determine soybean yield. The MZ were delineated based on the ECa spatial distribution, and statistical non-parametric tests (p < 0.05) were employed to compare the soil chemical and physical attributes among MZ. The management zones were able to distinguish the average values of Clay, Silt, pH, Ca2+, Mg2+, SB, Al3+, H+ + Al3+, AS%, and BS%. In the field classified as sandy clay loam texture, management zones were able to differentiate the average values of soybean yield, Clay, Ca2+, Mg2+, SB, and CEC. Thus, this study supports the ECa as an efficient tool for delineating MZ of contrasting cropland soils in southern Brazil to understand the within-field soil variability and adjust the inputs according.
- Subjects
BRAZIL; ELECTRIC conductivity; SOILS; SOIL testing; PRECISION farming; SOIL sampling; SOIL texture
- Publication
Agronomy, 2022, Vol 12, Issue 6, p1390
- ISSN
2073-4395
- Publication type
Article
- DOI
10.3390/agronomy12061390