Effect of Christmas Island rock phosphate and rice straw compost application on soil phosphorus availability and maize (Zea maysL.) growth in a tropical acid soil of Kelantan, Malaysia

Ch’ng, Huck Ywih; Sanusi, Syajariah; Othman, Suhaimi

doi:10.1515/opag-2020-0015

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…Amending acid soils with compost or a mixture of compost and biochar can increase total P, available P, inorganic P fractions (soluble-P, Al-P, Fe-P, redundant soluble P, and Ca-P), and organic P [13]. Similar findings were reported in the work of Sanusi et al [137] and Ch'ng et al [8], where rice straw compost with Christmas Island rock phosphate (CIRP) was found to increase soil-available P in acidic soil. Another study by Mensah and Frimpong [138] showed that the application of compost significantly increased the soil-available P in both the Aiyinase and Cape Coast soils.…”

Section: Compostsupporting

confidence: 77%

“…Phosphorus availability is maximised at pH 6.5 for mineral soils and pH 5.5 for organic soils [7]. To reduce P fixation, farmers tend to apply large amounts of P fertiliser and lime to saturate Al and Fe ions and increase the soil pH [8]. However, this practice is uneconomical and environmentally unfriendly because excessive use of P fertilisers causes water pollution, such as in the form of eutrophication.…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus Transformation in Soils Following Co-Application of Charcoal and Wood Ash

et al. 2021

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Phosphorus (P) is a vital soil macronutrient required by plants for optimum growth and development. However, its availability is limited because of fixation. The phosphorus fixation reaction is pH dependent. In acid soils, the predominance of aluminium (Al) and iron (Fe) oxides in both crystalline and amorphous forms reduces the solubility of soil inorganic P through fixation on positively charged surfaces and formation of insoluble Al and Fe precipitates. In alkaline soils, P readily reacts with calcium (Ca) to form sparingly soluble calcium phosphates. As a result, a large proportion of applied P may become chemically bound, whereas only a small fraction of soil P remains in the soil solution and available for plant uptake. To date, there is little information available on the use of charcoal with a highly negative charge and wood ash with high alkalinity to minimise P fixation in acid soils. Thus, this study examined the potential of the combined use of charcoal and wood ash to unlock P fixation in acid soils. Numerous studies have been conducted to identify effective approaches to improve P availability through the use of different types of soil amendments, regardless of whether P is organically or inorganically present. For example, to mitigate P fixation in acid soils, amendments such as compost and zeolite are used to reduce P sorption sites. These amendments have also been used to increase P uptake and crop productivity in P deficient acid soils by reducing soil acidity and the toxicity of Al and Fe. It is believed that long-term application of charcoal and sago bark ash can positively change the physical and chemical properties of soils. These improvements do not only reduce P fixation in acid soils, but they also promote an effective utilisation of nutrients through timely release of nutrients for maximum crop production.

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Section: Compostsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Phosphorus Transformation in Soils Following Co-Application of Charcoal and Wood Ash

et al. 2021

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“…The reductions in soil exchangeable acidity, Al 3+ , and Fe 2+ for the treatments with charcoal and sago bark ash are related to the increase in soil pH. This finding is consistent with the findings of previous studies which also reported that decrease in exchangeable Al 3+ and Fe 2+ was directly related with the improvement in soil pH [78,82,83]. This was possible because the hydroxyl ions formed from the dissolution of the CaO, MgO, K 2 O, and NaOH in the ash neutralise the protons in the soil solution and those bound on the cation exchange sites in the soil [84].…”

Section: Selected Soil Chemical Properties At Thirty Sixty and Ninety Days Of Incubationsupporting

confidence: 91%

Optimisation of Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Phosphorus Availability in Acidic Soils

et al. 2021

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Soil acidity is an important soil factor affecting crop growth and development. This ultimately limits crop productivity and the profitability of farmers. Soil acidity increases the toxicity of Al, Fe, H, and Mn. The abundance of Al and Fe ions in weathered soils has been implicated in P fixation. To date, limited research has attempted to unravel the use of charcoal with the incorporation of sago (Metroxylon sagu) bark ash to reduce P fixation. Therefore, an incubation study was conducted in the Soil Science Laboratory of Universiti Putra Malaysia Bintulu Sarawak Campus, Malaysia for 90 days to determine the optimum amounts of charcoal and sago bark ash that could be used to improve the P availability of a mineral acidic soil. Charcoal and sago bark ash rates varied by 25%, whereas Egypt rock phosphate (ERP) rate was fixed at 100% of the recommendation rate. Soil available P was determined using the Mehlich 1 method, soil total P was extracted using the aqua regia method, and inorganic P was fractionated using the sequential extraction method based on its relative solubility. Other selected soil chemical properties were determined using standard procedures. The results reveal that co-application of charcoal, regardless of rate, substantially increased soil total carbon. In addition, application of 75% sago bark ash increased soil pH and at the same time, it reduced exchangeable acidity, Al3+, and Fe2+. Additionally, amending acidic soils with both charcoal and sago bark ash positively enhanced the availability of K, Ca, Mg, and Na. Although there was no significant improvement in soil Mehlich-P with or without charcoal and sago bark ash, the application of these amendments altered inorganic P fractions in the soil. Calcium-bound phosphorus was more pronounced compared with Al-P and Fe-P for the soil with ERP, charcoal, and sago bark ash. The findings of this study suggest that as soil pH decreases, P fixation by Al and Fe can be minimised using charcoal and sago bark ash. This is because of the alkalinity of sago bark ash and the high affinity of charcoal for Al and Fe ions to impede Al and Fe hydrolysis to produce more H+. Thus, the optimum rates of charcoal and sago bark ash to increase P availability are 75% sago bark ash with 75%, 50%, and 25% charcoal because these rates significantly reduced soil exchangeable acidity, Al3+, and Fe2+.

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“…Furthermore, commercially viable phosphate rock reserves are diminishing, and some scenarios, though debatable, project their depletion within the next 100 years (Gilbert, 2009). Farmers typically apply significant amounts of P fertilizer and lime to saturate Al and Fe ions and boost soil pH to decrease P fixation (Ch'ng et al, 2020). However, this approach is both inefficient and harmful to the environment, as a higher application of P fertilizers creates water contamination, e.g.…”

Section: Introductionmentioning

confidence: 99%

Determination of critical limit of soil phosphorous for mustard (Brassica napus L.) and maize (Zea mays L.) in different agroecological zones of Bangladesh

Khan,

Rahman,

Tarafder

et al. 2024

Acta Agro

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The idea of a critical limit (CL) of nutritional elements distinguishes deficiency from adequacy, which could suggest fertilizer administration. The critical limit can be used to distinguish between responsive (deficiency) and non-responsive (sufficiency) sites. The study aims to estimate the critical limit of phosphorus (P) for mustard and maize in different Agro-ecological Zones (AEZs) of Bangladesh. In this context, the study was conducted in 20 types of soil and two crops (maize and mustard) both in pot and field experiments. Twenty soils from different places were used as experimental materials, among them 12 soil samples had inadequate soil fertility, 4 had low fertility, and the remaining 4 had medium levels of fertility. The treatments were two crops: BARI Hybrid Maize 7 (Maize) and BINA Sharisha 9 (Mustard) and two levels of phosphorus (P): 0 and 15 ppm. Dry matter (DM) yield was calculated and the nutritional content of plant samples was determined. Depending on the chemical properties of the soil, the results ranged from extremely low to very high levels. Reading the mustard crop, the estimated critical levels of P were found to be 14.8 ppm (graphical) and 18.9 ppm (statistical). Regarding the maize crop, the estimated critical P levels were found to be 14.5 ppm (graphical) and 12.3 ppm (statistical). When soil P is less than the CL, plants respond to P-based fertilizer effectively. The results of the trials will assist in managing P fertilizer for the sustainability of maize and mustard production in diverse soil types in different agroecological zones of Bangladesh.

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Effect of Christmas Island rock phosphate and rice straw compost application on soil phosphorus availability and maize (Zea maysL.) growth in a tropical acid soil of Kelantan, Malaysia

Cited by 8 publications

References 24 publications

Phosphorus Transformation in Soils Following Co-Application of Charcoal and Wood Ash

Phosphorus Transformation in Soils Following Co-Application of Charcoal and Wood Ash

Optimisation of Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Phosphorus Availability in Acidic Soils

Determination of critical limit of soil phosphorous for mustard (<i>Brassica napus</i> L.) and maize (<i>Zea mays</i> L.) in different agroecological zones of Bangladesh

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