Soil Phosphorus Modeling for Modern Agriculture Requires Balance of Science and Practicality: A Perspective

Das, Bianca T.; Huth, Neil; Condron, Leo M.; Schmidt, Susanne

doi:10.2134/jeq2019.05.0201

Cited by 23 publications

(15 citation statements)

References 174 publications

(262 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a new function compared with the DPPS model. Most models include available P, non-or low available P, and organic P with varying degrees of stability (Das et al, 2019). However, quantifying these pools is costly and time consuming.…”

Section: Lepa Model Performance On Soil Tp and Olsen-pmentioning

confidence: 99%

“…To do so, soil P models may be used as a tool by providing a platform to estimate soil P processes and crop uptake across cropping systems and growth conditions. The main models currently used include DPPS, EPIC (erosion-productivity impact calculator), DASST (decision support system for agrotechnology transfer), and APSIM (agricultural production simulation model) at the field and global scales, which have been reviewed by Das et al (2019); Sattari et al (2012); and Sattari et al (2014). All of the above models face a common challenge in the initialization of conceptual soil P pools that are defined in models but cannot be directly measured and evaluated by regular chemical analysis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Novel Model of Soil Legacy P Assessment for Calcareous and Acidic Soils

Wen-jia

Hartmann

et al. 2021

Front. Environ. Sci.

View full text Add to dashboard Cite

Phosphate (P) rock is a finite natural resource, and its use for P fertilizer production has resulted in its rapid depletion worldwide. In order to reduce the use of natural P resources, reducing the input of P into agricultural systems is necessary. The assessment of legacy P in soil is an option to maintain crop yield with low P fertilizer input. Many models have been tested to assess the contribution of legacy soil P to crop uptake. However, these models face a common challenge as conceptual soil P pools in models cannot be accurately initiated and evaluated using measured soil P indexes. In this study, a novel legacy P assessment (LePA) model was developed according to empirical equations about crop P uptake, soil Olsen-P, and total P from two long-term fertilizer experiments in typical calcareous and acidic soils in China. We used the DPPS (dynamic phosphorus pool simulator) model as a contrast model to estimate the simulation accuracy of the new LePA model. The calibration and validation datasets for both models were set-up by collecting data from two long-term fertilizer experiments in typical calcareous and acidic soils in China. The results showed that the LePA model simulated crop P uptake similar to the DPPS model in calcareous soil. While the DPPS model failed to depict crop P uptake under low pH conditions, the LePA model worked well after modification when limited crop growth caused by acidic conditions was considered. Moreover, the LePA model can also predict changes in soil TP and Olsen-P with P fertilizer application, which are new functions compared with the DPPS model. Based on a scenario analysis generated by the LePA model, P fertilizer application could be reduced by 52% in Yangling and 46% in Qiyang compared with the conventional application rate during this period to maintain the current yields if soil legacy P can be utilized efficiently. The LePA model is a useful tool for guiding soil P management from the field to country scales.

show abstract

Section: Lepa Model Performance On Soil Tp and Olsen-pmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a Novel Model of Soil Legacy P Assessment for Calcareous and Acidic Soils

Wen-jia

Hartmann

et al. 2021

Front. Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Das et al (2019) use soil P modeling to assist in identifying strategies to improve PUE. They underscore the need for long-term field trials, field data, and multidisciplinary collaboration, while noting that climate change presents challenges to predicting P availability and nutrient cycling (Das et al, 2019). Bruulsema et al (2019) discuss opportunities to use P legacies in crop production to increase PUE and decrease water quality impairment.…”

Section: Reflecting On the Need To Improve Phosphorus Use Efficiencymentioning

confidence: 99%

“…Improving PUE in these high‐yield environments requires new technologies to enable high yields, including precision P placement and enhanced efficiency P fertilizer sources (Hopkins and Hansen, 2019). Das et al (2019) use soil P modeling to assist in identifying strategies to improve PUE. They underscore the need for long‐term field trials, field data, and multidisciplinary collaboration, while noting that climate change presents challenges to predicting P availability and nutrient cycling (Das et al, 2019).…”

Section: Reflecting On the Need To Improve Phosphorus Use Efficiencymentioning

confidence: 99%

Phosphorus mirabilis: Illuminating the Past and Future of Phosphorus Stewardship

Jarvie

Sharpley²,

Flaten³

et al. 2019

J of Env Quality

View full text Add to dashboard Cite

After its discovery in 1669, phosphorus (P) was named Phosphorus mirabilis (“the miraculous bearer of light”), arising from the chemoluminescence when white P is exposed to the atmosphere. The metaphoric association between P and light resonates through history: from the discovery of P at the start of the Enlightenment period to the vital role of P in photosynthetic capture of light in crop and food production through to new technologies, which seek to capitalize on the interactions between novel ultrathin P allotropes and light, including photocatalysis, solar energy production, and storage. In this introduction to the Journal of Environmental Quality special section “Celebrating the 350th Anniversary of Discovering Phosphorus—For Better or Worse,” which brings together 22 paper contributions, we shine a spotlight on the historical and emerging challenges and opportunities in research and understanding of the agricultural, environmental, and societal significance of this vital element. We highlight the role of P in water quality impairment and the variable successes of P mitigation measures. We reflect on the need to improve P use efficiency and on the kaleidoscope of challenges facing efficient use of P. We discuss the requirement to focus on place‐based solutions for developing effective and lasting P management. Finally, we consider how cross‐disciplinary collaborations in P stewardship offer a guiding light for the future, and we explore the glimmers of hope for reconnecting our broken P cycle and the bright new horizons needed to ensure future food, water, and bioresource security for growing global populations. Core Ideas This special section comprises 22 papers celebrating the 350th anniversary of P discovery. Historical and emerging challenges and opportunities exist in P research and understanding. Authors address P use efficiency and a kaleidoscope of challenges for efficient P use. Focusing on place‐based solutions is required for effective P management. Cross‐disciplinary collaborations in P stewardship are needed for food and water security.

show abstract

“…Therefore, balancing the complete soil system is the only reliable solution. This also takes into account, in addition to omnidirectional inputs and outputs, P transformations and cycles in the soil [21].…”

Section: Introductionmentioning

confidence: 99%

Modified Biochar—A Tool for Wastewater Treatment

et al. 2020

View full text Add to dashboard Cite

Global deposits of concentrated phosphates, which are a necessary source for the production of phosphate fertilizers, are limited. These reserves keep getting thinner, and every day, large amounts of phosphorus end up in watercourses. In this study, we verified that modified biochar (saturated with FeCl3 solution and then neutralized with NaOH solution) can adsorb significant amounts of phosphorus from wastewater. Moreover, the agrochemical qualities of sludge water from a municipal wastewater treatment plant, struvite, phosphorus-saturated biochar, and iron(III) phosphate from a reused biochar filter were tested in this study. We determined the amount of mobile phosphorus as well as the amount of extractable phosphorus and its five fractions. It was found that modified biochar can hold one-third of the phosphorus amount contained in the commonly used agricultural fertilizer simple superphosphate (1 × 105 g of modified biochar captures up to 2.79 × 103 g of P). Moreover, plants can more easily access phosphorus biochar fractions than struvite, which is formed spontaneously during sludge management. The results of this research prove that the proposed method of recycling phosphorus from wastewater can be applied in technological practice.

show abstract

Soil Phosphorus Modeling for Modern Agriculture Requires Balance of Science and Practicality: A Perspective

Cited by 23 publications

References 174 publications

Development of a Novel Model of Soil Legacy P Assessment for Calcareous and Acidic Soils

Development of a Novel Model of Soil Legacy P Assessment for Calcareous and Acidic Soils

Phosphorus mirabilis: Illuminating the Past and Future of Phosphorus Stewardship

Modified Biochar—A Tool for Wastewater Treatment

Contact Info

Product

Resources

About