Effect of some amendments on leachate properties of a calcareous saline-sodic soil
E. Pazira 2
,  
A. Neshat 3
,  
H. Naghavi 4
,  
A.A. Moezi 5
,  
 
 
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1
Department of Soil Science, Science and Research Branch, Islamic Azad University, Khuzestan, Iran
2
Department of Soil Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
3
Department of Water Engineering, Islamic Azad University, Kerman Branch, Kerman, Iran
4
Kerman Agriculture and Natural Resources Research Centre, Kerman, Iran
5
Department of Soil Science, Sahid Chamran University, Ahvaz, Iran
6
Department of Soil Science, Shahid Bahonar University of Kerman, Kerman, Iran
 
Int. Agrophys. 2011, 25(3): 307–310
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ABSTRACT
The effect of some amendments for ameliorating a calcareous saline sodic soil was investigated using experimental columns. The amendment treatments were: control, manure, pistachio residue, gypsum, manure+gypsum and pistachio residue+ gypsum, applied once at the beginning of the experiment. After soil columns preparation, an intermittent irrigation method was employed. The results indicated that for the first leaching experiment, the salinity and sodicity values of leachate were high, while for subsequent irrigation steps they decreased, significantly. When gypsum was added in conjunction with organic amendments, greater amounts of Na were leached. The results of this study reveal that organic amendments have more ability in depleting deleterious salts from the soil than the mineral amendments. However, combination of organic and mineral amendments can improve their efficiency.
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