the relationship between some measure of soil P and runoff dissolved P (Gburek et al., 2000; Coale et al., The relationship between soil test P (STP) and dissolved reactive 2002; Vadas et al., 2002). However, recent research has P (DRP) in runoff has been shown to vary with soil type due to differences in soil properties. This study was conducted to determine shown that this relationship will v...

sons, clay and organic matter differences between soils should be incorporated into any kind of predictive model. Measuring the cation exchange capacity (CEC) for all horizons of Several researchers have attempted to predict CEC every map unit component in a survey area is very time consuming from clay and organic C contents alone, using multiple and costly. The objective of this study was to d...

Soil knowledge is essential to address modern global challenges. science education began with soil survey and agricultural activities, a focus on the traditional sub-disciplines of chemistry, physics, pedology, mineralogy, biology. has evolved needs an increasing variety fields increasingly complex issues, as seen through move teach content in programs such biological ecological sciences, envir...

6 Soil Sci. Soc. Am. J. 74:2010 Published online 1 Feb. 2010 doi:10.2136/sssaj2008.0411 Received date 14 Dec. 2008. *Corresponding author ([email protected]). © Soil Science Society of America, 677 S. Segoe Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recor...

Soil Sci. Soc. Am. J. doi:10.2136/sssaj2012.0390 Received 19 Nov. 2012 *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information stora...

The paper reviews a set of soil surveys carried out in Iran using a geopedologic approach for different surveying aims in different scales. Most of these studies have implemented a similar survey method including the following steps: delineation of landforms from air photos using geomorphic and soil-landscape relationships, field check of the delineations, sample areas inventory with soils clas...