Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition

Rawal, Nabin; Pande, Keshab Raj; Shrestha, Renuka; Vista, Shree Prasad

doi:10.1002/agg2.20229

Cited by 11 publications

(11 citation statements)

References 33 publications

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“…Phosphorus is usually more abundant in the upper soil layers, as P is generally considered an immobile element in the soil; hence, as soil pH changes, the activities of P and the other elements with which P can react in the soil will also change. In the soil, P is most readily available between pH 6 and 7.5 (Hinsinger, 2001; Penn & Camberato, 2019; Prasad & Chakraborty, 2019; Rawal et al., 2022), a range in which all the soils in this study fell. If P is rendered more mobile through pH‐induced dissolution, P will then be able to leach downward into the soil profile and potentially beyond the plant root zone where P saturation may eventually occur, posing a threat to leachate/subsurface water quality (Wang et al., 2019) in soils that have shallow or perched water tables.…”

Section: Resultsmentioning

confidence: 86%

“…Post‐leaching WS K differences could also have been a factor of soil pH changes, where soil pH increased with the addition of water, which may have facilitated the dissolution of other cations and displaced OH − and basic cations from exchange sites and into solution. The increased pH above 6.0 may have caused K release, as K is commonly released from the soil's nonexchangeable pools above pH 6.0 (Kibreselassie et al., 2017; Rawal et al., 2022).…”

Section: Resultsmentioning

confidence: 99%

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Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Simms,

Brye,

Roberts

et al. 2024

Agrosystems Geosci & Env

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Phosphorus (P) can be recovered from wastewater and used as an alternative fertilizer, namely, struvite [MgNH4PO4·6(H2O)]. However, the soil mobility of wastewater‐derived P and other nutrients needs to be evaluated. The objective of this study was to compare the vertical distribution of water‐soluble (WS) soil P and other nutrients from a synthetic‐wastewater‐derived electrochemically precipitated struvite (ECST) to that from a chemically precipitated struvite (CPST), triple superphosphate (TSP), monoammonium phosphate (MAP), and a control in six soils from Arkansas (AR; loam [L] and silt loam [SiL]), Missouri (MO; SiL 1 and SiL 2), and Nebraska (NE; sandy loam [SL] and SiL). A column‐leaching experiment was conducted with the six soils and five fertilizer‐P treatments. Water‐soluble (WS) P from the two struvite materials generally did not differ (p > 0.05) and was similar to that of MAP in the depths of 0–3, 3–6, and 6–10 cm, but was greater than that of TSP in the top 6 cm in four of the six soils. WS P from CPST in the MO‐SiL 2 and NE‐SL soils (6.6 and 12.7 mg kg−1, respectively) was larger than that from ECST, MAP, and TSP. In the AR‐L and MO‐SiL 1 soils, TSP was the only fertilizer‐P source that had increased WS P concentrations in the top 6 cm relative to the other fertilizer‐P sources. Results showed that ECST‐derived, WS P had similar soil profile distributions in the top 10 cm, suggesting that ECST will be equally protective of environmental health and leachate quality across multiple soil textures as other common fertilizer‐P sources.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Simms,

Brye,

Roberts

et al. 2024

Agrosystems Geosci & Env

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show abstract

“…For example, the positive correlation between Variovorax and Aspergillus with pH, Conversely, Arthrobacter was negatively correlated with EC, dehydrogenase, and nitrate reductase, Burkholderia with P, Variovorax and Aspergillus with K, Trichoderma with moisture, EC, SOC, Cu, dehydrogenase, protease, acid phosphatase, and urease, and Chaetomium with EC and nitrate reductase. Aspergillus was found to adapt well to stress and higher pH conditions, while in winter, soil pH decreased, impacting available K and soil microbial processes (Lladó et al, 2017b;Markina-Iñarrairaegui et al, 2020;Rawal et al, 2022). Soil C, N, and P cycling involve multiple microbial processes such as mineral acquisition, transportation, and availability to plants (Yang et al, 2010;Brockett et al, 2012;Koyama et al, 2018;Liu et al, 2019;Świątek and Pietrzykowski, 2022).…”

Section: Discussionmentioning

confidence: 99%

Decoding seasonal changes: soil parameters and microbial communities in tropical dry deciduous forests

Solanki,

Gurjar,

Sharma

et al. 2024

Front. Microbiol.

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In dry deciduous tropical forests, both seasons (winter and summer) offer habitats that are essential ecologically. How these seasonal changes affect soil properties and microbial communities is not yet fully understood. This study aimed to investigate the influence of seasonal fluctuations on soil characteristics and microbial populations. The soil moisture content dramatically increases in the summer. However, the soil pH only gradually shifts from acidic to slightly neutral. During the summer, electrical conductivity (EC) values range from 0.62 to 1.03 ds m-1, in contrast to their decline in the winter. The levels of soil macronutrients and micronutrients increase during the summer, as does the quantity of soil organic carbon (SOC). A two-way ANOVA analysis reveals limited impacts of seasonal fluctuations and specific geographic locations on the amounts of accessible nitrogen (N) and phosphorus (P). Moreover, dehydrogenase, nitrate reductase, and urease activities rise in the summer, while chitinase, protease, and acid phosphatase activities are more pronounced in the winter. The soil microbes were identified in both seasons through 16S rRNA and ITS (Internal Transcribed Spacer) gene sequencing. Results revealed Proteobacteria and Ascomycota as predominant bacterial and fungal phyla. However, Bacillus, Pseudomonas, and Burkholderia are dominant bacterial genera, and Aspergillus, Alternaria, and Trichoderma are dominant fungal genera in the forest soil samples. Dominant bacterial and fungal genera may play a role in essential ecosystem services such as soil health management and nutrient cycling. In both seasons, clear relationships exist between soil properties, including pH, moisture, iron (Fe), zinc (Zn), and microbial diversity. Enzymatic activities and microbial shift relate positively with soil parameters. This study highlights robust soil-microbial interactions that persist mainly in the top layers of tropical dry deciduous forests in the summer and winter seasons. It provides insights into the responses of soil-microbial communities to seasonal changes, advancing our understanding of ecosystem dynamics and biodiversity preservation.

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“…More research is needed to investigate the effects of DCAP on P-Al and P-Fe concentrations in acidic soils, which are factors that significantly influence the availability of P in the soil. Moreover, the study of K availablity content in ASSs is necessary because available K may be affected by key reasons, including soil texture, mineralogy, temperature, and soil acidity ( Rawal et al, 2022 ). In addition, the relationship between K and P availability in acidic soils need to be clarified in the next studies.…”

Section: Discussionmentioning

confidence: 99%

Influence of dicarboxylic acid polymer in enhancing the growth and productivity of sweet potato (Ipomoea batatas L.) in acidic soil

Dang¹,

Hung²,

Toan³

et al. 2023

PeerJ

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The available phosphorus (P) in acid sulfate soils (ASSs) is low because of fixation by aluminum (Al) and iron (Fe), resulting in decreased P use efficiency and crop yield. At present, the use of dicarboxylic acid polymer (DCAP) coated on P fertilizer is expected to improve P use efficiency and plant productivity. However, the influence of DCAP on P solubility and on the yield of sweet potato cultivated in acidic soils has not been elucidated. Thus, the aimed of this study was to evaluate the effect of the use of DCAP-coated P fertilizer on the availability and nutrient uptake of P as well as the yield of sweet potato. Under the greenhouse condition, the use of DCAP significantly improved P availability (~3 mg P kg−1), increasing tuber diameter and length by ~0.5 and ~1.0 cm, respectively. Thus, the productivity of sweet potato in the treatment 40-kg P2O5 and 60-kg P2O5 ha−1 coated with DCAP was higher by about 100 g pot−1 than that in the same rate of P fertilizers (40- and 60-kg P2O5 ha−1) not coated with DCAP. In the field experiment, P accumulation (82.7 kg P2O5 ha−1) and tuber yield (22.0 t ha−1) in the treatment of DCAP-coated with 60-kg P2O5 ha−1 were not significantly different compared with that in the treatment of 80-kg P2O5 ha−1 (82.1 kg P2O5 and 21.7 t ha−1, respectively). Furthermore, the use of DCAP combined with 75% P fertilizer increased the P availability by the same amount as that with the use of 100% P fertilizer. Hence, the use of DCAP reduced about 25% of the chemical P fertilizer applied in soil.

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Phosphorus and potassium mineralization as affected by phosphorus levels and soil types under laboratory condition

Cited by 11 publications

References 33 publications

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Decoding seasonal changes: soil parameters and microbial communities in tropical dry deciduous forests

Influence of dicarboxylic acid polymer in enhancing the growth and productivity of sweet potato (Ipomoea batatas L.) in acidic soil

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