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95 Result For : Malaysian Society of Soil Science
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Green Bean (Vigna radiata) Seedling Growth Inhibition by Chromobacterium Violaceum under In-vitro Condition
By Wai Keong Loke & Halimi Mohd Saud © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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95-99 Page(s)
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Abstract
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Chromobacterium violaceum is a pathogenic soil bacterium producing violacein and hydrogen cyanide both of which is controlled by quorum sensing with the same signal molecule homoserine lactone (C6-HSL). A study was carried out to determine if quorum sensing was a factor that was required for inhibiting the growth of green bean (Vigna radiata) seedling. The results showed that C. violaceum which reached quorum level inhibited the growth of green bean seedling as much as 86.5% for the shoot length and 92.1% for the root length... |
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Keywords
Chromobacterium violaceum, quorum sensing, seedling growth,
Vigna radiata inhibition
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Boron Status of Paddy Soils in the States of Kedah
and Kelantan, Malaysia
By M. Saleem, Y.M. Khanif, I. Che Fauziah, A.W. Samsuri
& B. Hafeez © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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83-94 Page(s)
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Abstract
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Management of micronutrient B in soil is difficult because of its high mobility. Soil sampling and analysis is the first important step in managing the nutrients required by plants. This study was conducted to evaluate the B status in soils of rice growing areas in Kedah and Kelantan which are the main rice growing states of the country. Soil samples were collected from 15 soil series namely Kranji, Sedeka, Guar, Kundur, Tualang, Teluk Chengai, Kuala Kedah, Rotan, Sedu, Kangkong, Batu Hitam, Lubok Itek, Tepus, Telemong and Chempaka to determine B status and other physico-chemical properties... |
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Keywords
Correlation study, hot water extractable B, paddy soils
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Effects of Micronutrient Fertilizers on the Production of
MR 219 Rice (Oryza sativa L.)
By Y.A. Liew, S. R. Syed Omar, M.H.A Husni,
M.A. Zainal Abidin & N.A.P. Abdullah © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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71-82 Page(s)
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Abstract
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Poor management of plant nutrients and ignorance of the Liebig's Law of Minimum for plant nutrients requirement is an obstacle in efforts to increase rice production in Malaysia. Ignorance of the importance of micronutrients application by Malaysian farmers hinders the achievement of high yields in rice production. Six farmer's plots were used to examine the importance of micronutrients in rice production in Sawah Sempadan, Tanjong Karang, Malaysia. Soil and foliar samples were collected and analyzed to determine the micronutrients content and then compared with the critical nutrients levels needed by rice... |
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Keywords
Fertilizer, Law of Minimum, micronutrients, rice
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Formulation of Coal Fly Ash and Sewage Sludge Mixtures
to Reduce Impacts on the Environment When Used as Soil
Ameliorant for Acidic Tropical Soils
By M. Nur Hanani, I. Che Fauziah, A.W. Samsuri & S. Zauyah © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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53-70 Page(s)
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Abstract
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Use of coal fly ash (CFA) as a soil ameliorant is hindered by the lack of macronutrients in the ash, besides, there are also concerns about its high concentration of microelements, especially boron. Sewage sludge (SS) on the other hand, has a high amount of macronutrients especially Zn. This study was carried out to evaluate the potential of CFA as a soil ameliorant to immobilize heavy metals from SS-treated soil and whether theSS could provide supplementary macronutrients for maize growth requirement. A laboratory soil incubation study was conducted using 3 kg mixture of soil, SS and CFA... |
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Keywords
acidic tropical soil, glasshouse study, maize plants, soil solution
study
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Adsorption and Desorption of Glufosinate Ammonium
in Soils Cultivated with Oil Palm in Malaysia
By S.M.J. Jariani, A.B. Rosenani, A.W. Samsuri, A.J. Shukor
& H.K. Ainie © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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41-52 Page(s)
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Abstract
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In Malaysia, glufosinate ammonium (GLUF) is a commonly used herbicide in oil palm plantations to control broad-leaved weeds and grasses. Adsorption and desorption of (GLUF) were studied using the batch equilibrium technique in four mineral soils, Inceptisols (Selangor), Oxisols (Munchong) and Ultisols (Serdang and Rengam) series and peat (Histosols) collected under oil palm cultivation from 0-15 cm and 15 - 30 cm depths. Adsorption coefficients of the herbicide were correlated with soil properties i.e. organic matter content, clay content, cation exchange capacity (CEC) and pH... |
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Keywords
Batch equilibrium test, linear equation, Freundlich equation,
Glufosinate ammonium, sorption isotherm
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Spatial Variability of Selected Chemical Characteristics of
Paddy Soils in Sawah Sempadan, Selangor, Malaysia
By A.W. Aishah, S. Zauyah, A.R. Anuar & C.I. Fauziah © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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27-39 Page(s)
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Abstract
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A study was conducted to evaluate the spatial variability of selected soil chemical properties of paddy soils in the Barat Laut Paddy Project area in Selangor. A total of 138 geo-referenced soil samples were collected from the area at 0-20 cm depth after harvest, at an interval of 80 - 90 m to determine the selected chemical properties: pH, organic carbon, total nitrogen (N), available phosphorus (P) and exchangeable potassium (K). Geostatistical analyses were applied to examine the within - field spatial variability using semivariograms and kriged maps... |
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Keywords
Spatial variability, Geostatistics, Paddy soil, Chemical properties
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Model Comparisons for Assessment of NPK Requirement of
Upland Rice for Maximum Yield
By A. Hartinee, M.M. Hanafi, J. Shukor & T.M.M. Mahmud © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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15-25 Page(s)
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Abstract
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Upland rice farmers in Malaysia still depend on resultant ash from burning for K and N sources. Efficient use of chemical fertilizers in upland rice needs accurate assessment of required nutrient elements. The present study was performed to determine the N, P, and K requirements of three upland rice varieties grown on idle land (Bukit Tuku soil, AQUIC KANDIUDULT) using four response models.
A glasshouse experiment was conducted using 0-200 kg N ha-1 (urea, 46%N), 0-120 kg P2O5 ha-1 (TSP, 45% P2O5), and 0-150 kg K2O ha-1 (MOP, 60% K2O), each at five levels... |
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Keywords
Fertilizer recommendation rates, linear, linear plateau, nutrient
requirement, quadratic plateau, upland rice
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Alleviating Acid Soil Infertility Constrains Using Basalt,
Ground Magnesium Limestone and Gypsum
in a Tropical Environment
By J. Shamshuddin & I. Che Fauziah © 2010. Malaysian Society of Soil Science
Malaysian Journal of Soil Science, Volume 14, Issue 1
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1-13 Page(s)
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Abstract
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Ultisols and Oxisols in the tropical regions are often acidic, with high Al but deficient in Ca and/or Mg. This limits maize production. Studies were conducted to investigate the efficacy of basalt, ground magnesium limestone (GML) and gypsum as acid soil ameliorants. Results showed that basalt improved soil fertility by increasing soil pH, cation exchange capacity (CEC) and exchangeable Ca, Mg and K and available P, with a concomitant lowering of exchangeable Al. In the soils treated with GML, Ca remained in the zone of incorporation... |
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Keywords
Basalt, ground magnesium limestome, gypsum, Oxisols, soil
acidity, Ultisols
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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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