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Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2002.1134 Last checked: 02/28/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2002.1134 Last checked: 02/28/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Fagroud, M.;
Van Meirvenne, M. |
Author Affiliation: | Fagroud: Ecole Nationale d'Agriculture de Meknès, Meknès, Morocco; Van Meirvenne: Department of Soil Management and Soil Care, Ghent University, Belgium |
Title: | Accounting for soil spatial autocorrelation in the design of experimental trials |
Section: | Division S-1 - Soil physics Other records with the "Division S-1 - Soil physics" Section
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Source: | Soil Science Society of America Journal. Vol. 66, No. 4, July/August 2002, p. 1134-1142. |
Publishing Information: | Madison, WI: Soil Science Society of America |
# of Pages: | 9 |
Keywords: | TIC Keywords: Experimental design; Physical properties of soil; Chemical properties of soil; Variations; Analytical methods
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Abstract/Contents: | "Soil heterogeneity complicates the design and analysis of field experiments. Block designs were developed for this purpose. However, the analysis of experimental results supposes that the residuals from the treatment are spatially independent and that within block variation is random. Experience indicates that this rarely is the case in field experiments, because of the strong spatial autocorrelation of soil properties. This paper applies geostatisical tools, such as variogram analysis and conditional stochastic simulation, to investigate the optimal experimental plot size and shape and to decide which experimental design is to be preferred. The methodology is illustrated using a case study of water-use efficiency under semiarid conditions in Morocco. It was found that under these conditions an experiment with 16 treatments would use best a plot size of 4 by 8 m oriented north-south, configured according to an incomplete block design with 8 plots per block oriented in two rows in the east-west direction." |
Language: | English |
References: | 24 |
Note: | Pictures, b/w Figures Tables Graphs Charts Maps |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Fagroud, M., and M. Van Meirvenne. 2002. Accounting for soil spatial autocorrelation in the design of experimental trials. Soil Sci. Soc. Am. J. 66(4):p. 1134-1142. |
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| Web URL(s): https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2002.1134 Last checked: 02/28/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2002.1134 Last checked: 02/28/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: S 590 .S65 |
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