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Sorption-Desorption Study of a Herbicide 2,4-
Dichlorophenoxyacetic Acid on Acidic Tropical Soils
By Akma, N.M.H., Samsuri, A.W., Ainie, H.K. & Rosenani, A.B © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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119-131 Page(s)
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Abstract
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The sorption and desorption of 2,4-dichlorophenoxyacetic acid (2,4-D) was evaluated on different soils with different range of organic matter content. The batch equilibrium technique under laboratory condition was used to determine the sorption/desorption behavior of 2,4-D in 4 different soil orders of Malaysia viz Histosols (peat), Inceptisols (Selangor and Briah) and Ultisols (Rengam and Serdang) and Oxisol (Munchong). Sorption data were fitted to the linear and Freundlich equations. The values of Kd and KF ranged from 1... |
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Keywords
2,4-D, linear equation, Freundlich equation, organic matter,
clay minerals
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Effects of Nitrogen and Phosphorous Fertilisation on Nitrous Oxide Emission and Nitrogen Loss in an Irrigated Rice Field
By M.T. Iqbal © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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105-117 Page(s)
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Abstract
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Nitrous oxide is an important greenhouse gas which contributes to stratospheric ozone destruction, but still little is known about emission of this trace gas from paddy rice fields treated with N and P fertilisation and how it is affected by irrigation. Therefore, a field experiment was conducted to measure nitrous oxide (N2O) emissions and nitrogen loss through the emission from irrigated rice fields treated with different nitrogen and phosphorous fertilisers. Emissions of nitrous oxide (N2O) were measured by the closed chamber method during the vegetative period (6 July to 8 August) of the paddy plant in ShuangQiao farm in the northern part of Zhejiang Province in the Southeast coastal area of China... |
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Keywords
Denitrification, nitrification, submerged soil, vegetative
period
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Modelling the Spatial and Temporal Change in Diffusion
Rates of Molasses in Sand Medium
By E.G. Goh & I. Athira © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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93-104 Page(s)
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Abstract
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Diffusion is one of the important parameters in groundwater study. In a relatively slow moving groundwater, diffusion could be a dominant factor in transporting contaminants between liquid-solid interface and liquid-liquid interchange. The diffusion coefficient of dissolved substance is normally tabulated as a constant value, irrespective of the influence of space and time. In this study, molasses was taken as a dissolved organic carbon (DOC) representation, and it was injected into a basin filled with porous medium (sand) in which it was allowed to diffuse horizontally and vertically in space and time... |
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Keywords
molasses, dissolved organic carbon, diffusion coefficient, Fick’s
law, porous medium
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Composting Oil Palm Wastes and Sewage Sludge For Use In
Potting Media Of Ornamental Plants
By D.R. Kala, A.B. Rosenani, C.I. Fauziah & L.A. Thohirah © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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1 views | Related Articles |
77-91 Page(s)
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Abstract
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The use of oil palm wastes, particularly the empty fruit bunch (EFB), frond and trunk as compost are now receiving greater attention by researchers. Currently, these organic waste materials have not been fully utilized on a large scale, either agriculturally or industrially, for manufacture of useful by-products. Another organic waste that needs to be appropriately disposed of in Malaysia is the sewage sludge. Co-composting these waste materials could potentially convert these wastes into value added product... |
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Keywords
potting substrate, co-composts, oil palm empty fruit bunch, oil
palm fronds, oil palm trunk
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Agronomic Characteristics and Proline Accumulation of
Iranian Rice Genotypes at Early Seedling Stage under
Sodium Salts Stress
By Momayezi, M.R., Zaharah, A.R., Hanafi, M.M. &
Mohd Razi, I © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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59-75 Page(s)
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Abstract
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Salt composition can affect rice (Oryza sativa L.) growth at germination and early seedling stages. The response of eleven rice genotypes to sodium salt compositions (NaCl and Na2SO4 with the ratio of 1:1, 2:1 and 1:2 molar concentrations) and concentrations (2.5, 5.0, 7.5 and 10 dS m-1 salt concentrations) was investigated in the laboratory for 10 days. Effects due to salinity, genotype, and their interaction were observed for most of the measured parameters during the germination and early seedling stages... |
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Keywords
Germination, germination index, mean germination time,
proline content, sodium salt composition
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Production of Hydrolytic Enzymes in Rice (Oryza sativa L.)
Roots Inoculated with N2-Fixing Bacteria
By A.M. Asilah, O. Radziah & M. Radzal © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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43-57 Page(s)
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Abstract
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An experiment was conducted to determine the production of hydrolytic enzymes endoglucanase (EG) and endopolymethylgalacturonase (EPMG) in rice (Oryza sativa L.) roots inoculated with N2-Fixing bacteria. Screening for hydrolytic enzymes by N2-Fixing bacteria, using the plate method showed that nine out of 12 bacterial strains were positive for carboxymethylcellulose (CMC) and pectin reactions. Three of the isolates, Sb34, Sb41 and Sb42 were inoculated to MR219 rice seedling. The bacterial population and the production of hydrolytic enzymes were monitored for 45 days of plant growth... |
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Keywords
Rice (Oryza sativa L.); Endoglucanase (EG);
Endopolymethylgalacturonase (EPMG); N2-Fixing Bacteria
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Earthworm Populations and Cast Properties in the Soils of
Oil Palm Plantations
By D.T. Sabrina, M. M. Hanafi, A. A. Nor Azwady &
T. M. M. Mahmud © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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29-42 Page(s)
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Abstract
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Oil palm plantations generate a substantial amount of agricultural by-products, such as oil palm empty fruit bunches (EFB) and fronds. These by-products are commonly recycled in the oil palm plantations in order to obtain plant nutrients through decomposition. Information on earthworm species and populations and their cast properties in oil palm plantations in different soil types and oil palm tree ages is still lacking. The population and diversity of earthworms, casts and soils were surveyed in 10 m transects using 5 of 25 cm2 quadrat... |
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Keywords
Oil palm, earthworm, Pontoscolex corethrurus, soil factors,
principal component analysis
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Chemical Characteristics of Representative High Aluminium
Saturation Soil as Affected by Addition of Soil Amendments
in a Closed Incubation System
By Jose Alvaro Cristancho Rodriguez, M. M. Hanafi,
S.R. Syed Omar & Y.M. Rafii © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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13-28 Page(s)
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Abstract
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Soil acidity is one of the main factors that limits profitable and sustained agricultural production. This study examined the performance of selected amendments in improving soil fertility of acidic tropical soils. The best two acidic tropical soils from Malaysia, Batu Anam and Durian, were selected to represent acid soils from Colombia while the five soil amendments selected were ground magnesium limestone (GML), magnesium carbonate (MgCO3), gafsa phosphate rock (GPR), gypsum, and kieserite. They were incubated in a closed incubation system for two months... |
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Keywords
Acidic soils, exchangeable aluminium, Gafsa Phosphate Rock,
ground magnesium limestone, incubation system, soil amendments
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Effect of Dolomitic Limestone and Gypsum Applications on
Soil Solution Properties and Yield of Corn and
Groundnut Grown on Ultisols
By J. Shamshuddin, I. Che Fauziah & L.C. Bell © 2009. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 13, Issue 1
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1-12 Page(s)
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Abstract
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A study was conducted to determine soil solution properties and relative tolerance of corn and groundnut plants to soil acidity. Corn followed by groundnut was planted on Ultisols one month after lime or gypsum was incorporated into the topsoil. Soil samples were collected after corn and groundnut harvest. Soil solutions were extracted by the immiscible replacement method of soil water with fluorocarbon trichlorofluoroethane. Results showed that total Al, inorganic Al, Ca, and Mg concentrations were erratically affected by the treatments... |
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Keywords
Aluminium corn, dolomitic limestone, groundnut, gypsum,
peanut, Ultisol
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An Open Letter to
the Informing Science Community
By T. Grandon Gill © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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v-x Page(s)
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Overcoming the Challenge of Cooperating with Competitors: Critical Success Factors of Interorganizational Systems Implementation
By Nitza Geri © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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0 views | Related Articles |
123-146 Page(s)
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Measuring IS System Service Quality with SERVQUAL: Users Perceptions of Relative Importance of the Five SERVPERF Dimensions
By Hollis Landrum
Victor R. Prybutok
Xiaoni Zhang
Daniel A. Peak © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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0 views | Related Articles |
17-35 Page(s)
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Exhibiting the Effects of the Episodic Buffer on Learning with Serial and Parallel Presentations of Materials
By Eshaa M. Alkhalifa © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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0 views | Related Articles |
57-71 Page(s)
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Stakeholder Perceptions Regarding eCRM: A Franchise Case Study
By Kelley O?Reilly
David Paper © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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0 views | Related Articles |
191-215 Page(s)
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The Impact of Inaccurate Color on Customer Retention and CRM
By Kevin R. Parker
Philip S. Nitse
Albert S. M. Tay © 2009. Informing Science Institute
Informing Science: The International Journal of an Emerging Transdiscipline, Volume 12
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0 views | Related Articles |
105-122 Page(s)
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