Variable Charge Soils: Their Mineralogy, Chemistry and Management

Qafoku, Nikolla P.; Ranst, Éric Van; Noble, Andrew; Baert, Geert

doi:10.1016/s0065-2113(04)84004-5

Cited by 168 publications

(118 citation statements)

References 195 publications

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“…In this study, concentration of Fe categorized as moderate are 225.56-910.00 ppm are relatively higher compared to that reported by Boyd et al (1994) measured in pond soils of Thailand, Philippines, Ecuador, and Venezuela which were 200-750 ppm. As discussed earlier that the volcanic soils have high capacity in retaining phosphate because this type of soil contains more Al and Fe which resulted in low P availability for plants and eventually results severity in plants productions (Qafoku et al, 2004;Van Ranst et al, 2008;Mejías et al, 2013;Galván-Tejada et al, 2014). The concentration of Fe that categorized as moderate are 83.50-4,580.60 ppm in pond soils of South Sulawesi had been reported by Mustafa et al (2015b).…”

Section: Nutrientsmentioning

confidence: 72%

“…Mustafa et al (2015b) reported that pond soils in South Sulawesi are mostly built on swamp land dominated by acid sulfate soils and peat soils indicated by low soils pH and high potential acidity. In contrast, volcanic soils dominating soils of Java Island have higher pH (Qafoku et al, 2004;Van Ranst et al, 2008). pH F is pH measured during the field work where the soils are still wet or commonly called as fresh soils.…”

Section: Akhmad Mustafa Et Al 11(3): 071-081 (2017)mentioning

confidence: 99%

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Study on Determination of Categories of Soil Quality Variable Concentrations in Brackish water Ponds of Java Island, Indonesia

Mustafa¹,

Undu²,

Kamariah³

2017

fisheries-aqua

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Abstract:Soil quality plays pivotal role in increasing productivity and brackish water ponds successfulness, including ponds of Java Island, Indonesia. However, the availability of data on concentration categories for soil quality variables for ponds soils in Java Island, which is volcanic-dominated soils and the largest area for ponds in Indonesia, is still scarce. This study was aimed to categories soil quality variable concentrations as an initial point in interpreting pond soils quality of Java Island. Soil samples were collected from two different soil depths of 923 sampling points representing 13 regencies/cities of West Java, Central Java, and East Java Provinces. Twenty soil quality variables were measured based on in-situ and ex-situ measurements. The t-Student and U-Mann Whitney tests were applied to analyses the differences in soils quality at each soil depth which were firstly analyzed using z-score to eliminate outlier data. The data were firstly rearranged from the smallest to the largest data prior to measuring data deciles; the deciles, as considered as the basic measurement, were used for categorizing each soil quality variable. The results of this study indicated that the pH and nutrients are higher at pond top soils, 0-0.2 m compared to that observed on the depth of 0.2-0.5 m. Concentration of soil quality variables such as S KCl , S P , S POS , TPA, TAA, TSA, and pyrite relatively similar between the two depths. Data of each soil quality variable were categorized into very low, low, moderate, high, and very high to facilitate a comparison to other data of ponds soil qualities. The results of this study are not recommended for assessing the relationship between ponds soil quality and ponds productivity; yet are usefull in measuring which variable of ponds soil quality is categorized as very low, low, moderate, high or very high; and also useful in making decision on pond soils quality management in Java Island.

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Section: Nutrientsmentioning

confidence: 72%

Section: Akhmad Mustafa Et Al 11(3): 071-081 (2017)mentioning

confidence: 99%

Study on Determination of Categories of Soil Quality Variable Concentrations in Brackish water Ponds of Java Island, Indonesia

Mustafa¹,

Undu²,

Kamariah³

2017

fisheries-aqua

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“…Additionally, litter decomposition rates are also lower under limiting micronutrient availability, given that the process is dependent on metallomic enzymes [25,26]. In leached and strongly acid tropical soils, the pool of soluble Fe, Mn, and Al are high, which may be potentially toxic for plants [20,27,28]. Decreasing levels of soil N in the Amazon caatinga habitats, from the valleys towards mounds, was corroborated by the values of total N, available P, and N/P ratio [9,10,14].…”

Section: Discussionmentioning

confidence: 99%

Soil and Leaf Micronutrient Composition in Contrasting Habitats in Podzolized Sands of the Amazon Region

Sobrado

2013

AJPS

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“…Hamdan et al [42] showed that charge characteristics were significantly correlated with soil organic matter, free iron oxides, and clay content. Sesquioxides have amphoteric properties; that is, their surface charge can bear either positive charge in an acid condition or negative charge in an alkaline condition [43].…”

Section: Permanent Negative Charge ( )mentioning

confidence: 99%

Physicochemical Properties and Surface Charge Characteristics of Arid Soils in Southeastern Iran

Moghimi

Hamdan

Shamshuddin

et al. 2013

Applied and Environmental Soil Science

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The majority of previous studies on surface charge characteristics were done on tropical and subtropical soils. Information of such studies in the arid regions is limited. A study was conducted to investigate the relation between soil chemical and mineralogical properties and surface charge characteristics of an arid region in Southeastern Iran. Eight soil pedons, representing the alluvial and the colluvial deposits, were described, and their mineralogical and physicochemical properties were examined. The common clay minerals in the studied area are smectite, palygorskite, kaolinite, chlorite, and illite. The point of zero charge (pH 0 ) values are low (2.85-3.35) in all soils mostly affected by organic carbon (OC) and free iron oxide (Fe d ). pH 0 has a significant negative correlation with pH under field conditions ( = −0.45 * , < 0.05). The point of zero net charge (PZNC) levels for all the soils were <2, due to the excess negative charge in these soils. The estimated PZNC values were less than pH 0 in all soils because of the high permanent negative charge in these soils. The permanent negative charge ( ) of the soils studied is high and it has a significant positive correlation with pH, CEC, Na, Mg, SAR, clay content, palygorskite, OC, and Fe d .

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Variable Charge Soils: Their Mineralogy, Chemistry and Management

Cited by 168 publications

References 195 publications

Study on Determination of Categories of Soil Quality Variable Concentrations in Brackish water Ponds of Java Island, Indonesia

Study on Determination of Categories of Soil Quality Variable Concentrations in Brackish water Ponds of Java Island, Indonesia

Soil and Leaf Micronutrient Composition in Contrasting Habitats in Podzolized Sands of the Amazon Region

Physicochemical Properties and Surface Charge Characteristics of Arid Soils in Southeastern Iran

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