Amelioration of salt affected soils in rice paddy system by application of organic and inorganic amendments

M. Shaaban, M. Abid and R.A.I. Abou-Shanab
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M. Shaaban: Department of Soil Science, University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan
M. Abid: Department of Soil Science, University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan
R.A.I. Abou-Shanab: Department of Environmental Biotechnology, City of Scientific Research and Technology

Plant, Soil and Environment, 2013, vol. 59, issue 5, 227-233

Abstract: Combined application of organic and inorganic amendments was known to play a significant role in improvement of soil properties. A field experiment was conducted to explore the effects of gypsum, farmyard manure and commercial humic acid application on the amelioration of salt affected (saline sodic) soil. During this study, soil pH, electrical conductivity, sodium adsorption ratio, responses of root length and rice paddy yield were examined. Application of gypsum with or without farm manure and commercial humic acid decreased soil pH (8.26%), electrical conductivity (from 6.35 dS/m to 2.65 dS/m) and sodium adsorption ratio (from 26.56 to 11.60), and increased root length (from 9.17 cm to 22.6 cm) and paddy yield (from 695.7 kg/ha to 1644 kg/ha). A negative but significant correlation was observed between root length and electrical conductivity, sodium adsorption ratio (r = -0.93; -0.94, respectively, P ≤ 0.05), whereas positive and significant correlation with paddy yield (r = 0.96; P ≤ 0.05).

Keywords: gypsum; farmyard manure; commercial humic acid; soil properties; saline sodic soil (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:59:y:2013:i:5:id:881-2012-pse

DOI: 10.17221/881/2012-PSE

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