Analysis of the regional-scale influence of agricultural ecosystem parameters on zinc concentrations of soil and rice grains using regression methods

We investigated the influence of various metrical and categorical parameters characterizing soil, climate, parent material, physiography and agricultural management on soil and rice grain Zn concentrations in two provinces of Central Iran. Total soil Zn was found to be a function of parent material, physiographic unit, crop rotation system, total soil P concentration and soil clay content. Except for soil CaCO3 and OC the parameters considered in our analysis, however, had no strong effect on grain Zn concentrations. The analysis showed that generally available information such as basic soil properties, parent material and crop rotation system can be very helpful in predicting the Zn status of agricultural soils on a regional scale, while it helped much less in predicting grain Zn concentrations in rice.

1. INTRODUCTION
2. MATERIALS AND METHODS
2.1 Sampling and analysis
2.2 Statistical Analysis
3. RESULTS AND DISCUSSION
3.1 Continues and categorical characteristics
3.2 Regression analysis for total soil Zn and grain Zn
3.3 Regression analysis for rice grain Zn
4. CONCLUSIONS



Copyright: © Aristotle University of Thessaloniki
Quelle: 2nd International Conference 2009 (Juni 2009)
Seiten: 7
Preis inkl. MwSt.: € 5,00
Autor: Mahin Karami
Prof. Majid Afyuni
Amirhossein Khoshgoftarmanesh
Dr. Andreas Jürg Papritz
M. Pirzadeh

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