Effect of Soil Conditioners on Cation Ratio of Soil Structural Stability, Structural Stability Indicators in a Sodic Soil, and on Dry Weight of Maize

The relative effects of Na + and K + on soil structural stability due to application of some conditioners in sodic soils are not clearly defined by the existing literature. In this research, a completely randomized design experiment was performed to quantify the effect of some conditioners on physic...

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Bibliographic Details
Published in:Arid land research and management 2014-07, Vol.28 (3), p.325-339
Main Authors: Emami, Hojat, Astaraei, Ali Reza, Fotovat, Amir, Khotabaei, Mojtaba
Format: Article
Language:English
Subjects:
conditioners
Corn
CROSS
Design of experiments
Loam soils
maize
Physical properties
SAR
sodicity
Soil conditioners
structural stability
Zea mays
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Summary:The relative effects of Na + and K + on soil structural stability due to application of some conditioners in sodic soils are not clearly defined by the existing literature. In this research, a completely randomized design experiment was performed to quantify the effect of some conditioners on physical properties in a loamy sodic soil. Five treatments included no conditioner as a control, urban solid waste compost (MC), Vermi-compose (VC), poultry manure (PM), and gypsum powder (G). The amount of each soil amendment was 10 ton/ha and each treatment consisted of 3 replications. The most important structural stability indicators including air capacity (AC), water dispersible clay (WDC), the slope of the retention curve at the inflection point (S gi index), and mean weight diameter of aggregates (MWD) were measured. The results showed that compared with the control, soil conditioners improved soil structural stability indicators significantly (P
ISSN:1532-4982
1532-4990
DOI:10.1080/15324982.2013.856357