Volume 15, Issue 55 (spring 2011)                   JWSS 2011, 15(55): 85-98 | Back to browse issues page


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H. Shirani, E. Rizahbandi, H. Dashti, M.R. Mosaddeghi, M. Afyuni. Effect of Pistachio Waste on Some Soil Physical Characteristics and Compactability of Two Soil Types . JWSS. 2011; 15 (55) :85-98
URL: http://jstnar.iut.ac.ir/article-1-1545-en.html

Abstract:   (23695 Views)
Organic matters are the most important factors that affect soil compactability and physical characteristics. In order to study the effect of pistachio waste on physical characteristics of two soils, a factorial experiment was conducted in a completely randomized design with three replications in a greenhouse. The treatments included pistachio waste at 4 levels (0, 3, 6 and 9 w/w %) and two types of soil texture (silty clay loam and sand).The results showed that the bulk density of sandy soil was decreased at high levels of waste application before compaction but had no significant effect on the bulk density of clay soil. The penetration resistance of both soil types was decreased by pistachio waste application. Soil water holding capacity increased and moisture curves shifted up for higher levels of organic matter application, while compaction curve reciprocally shifted into the lower levels by incorporation of wastes into the soils. At higher levels of organic matters, maximum bulk density was decreased and critical moisture was increased specially in fine texture soil. After compaction, the application of pistachio waste significantly reduced penetration resistance in silty clay loam soil relative to control but in sandy soil its effect on penetration resistance was only significant at maximum level (9 %).
Full-Text [PDF 257 kb]   (2847 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2011/06/25

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