Trend of fertilizer application during the last three decades (Case study: America, Australia, Iran and Malaysia)

Motesharezadeh, Babak; Valizadeh-rad, Keyvan; Dadrasnia, Arezoo; Amirmokri, Hormoz

doi:10.1080/01904167.2016.1250909

Cited by 9 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, Europe shows an initial increase followed by a decrease, Asia exhibits a rapid increase, South America, North America and Africa demonstrate a medium increasing trend, and Australia exhibits a low increasing trend. 86.6 and 10.7 kg/hm 2 to 207.3 and 127.5 kg/hm 2 in the United States and Canada, respectively [42], while the fertilizer application intensity in Australia is almost onethird of that in the United States [43].…”

Section: Temporal Evolution Of Nh 3 Emissions In Six Continents Over ...mentioning

confidence: 99%

“…It increased from 1.53 mg m −2 in 1850 to 8.75 mg m −2 in consistently remaining in the lower emission range. According to national d fertilizer use from 1961 to 2014 published by the Food and Agriculture Organ of the United Nations, the average fertilizer application intensity increased fro and 10.7 kg/hm 2 to 207.3 and 127.5 kg/hm 2 in the United States and C respectively [42], while the fertilizer application intensity in Australia is almo third of that in the United States [43].…”

Section: Characteristics Of the Temporal Dynamics Of Global Nh 3 Emis...mentioning

confidence: 99%

See 1 more Smart Citation

Increasing NH3 Emissions in High Emission Seasons and Its Spatiotemporal Evolution Characteristics during 1850–2060

Wang

2023

Atmosphere

View full text Add to dashboard Cite

Ammonia (NH3) is a crucial alkaline component in the atmosphere, with significant impacts on environmental and ecosystem health. However, our understanding of the long-term variability characteristics of NH3 emissions is still limited due to the scarcity of long-term continuous NH3 emission observation data. In this study, we investigated the global NH3 emission evolution pattern during the high-emission season (March–August) in historical (1850–2014) and future (2015–2060) periods, based on the simulated global NH3 emission and temperature data using the CESM2-WACCM model from CMIP6. We utilized cluster analysis, KNN regression simulation, and transfer matrix analysis to explore the emission characteristics. In the historical period, the analysis revealed that the high NH3 emission season is March–August, accounting for about 60% of annual emissions, with a significant increasing trend of NH3 emissions. The global average NH3 emissions in the last 164 years were about four times higher (28.06 mg m−2) than those in 1850 (5.52 mg m−2). Moreover, on the intercontinental scale, NH3 emissions from 1850 to 2014 March–August exhibited dynamic increases characterized differently across continents. Europe showed an increasing and then decreasing trend, Asia demonstrated a rapid increase, while South America, North America, and Africa exhibited medium increases, and Australia showed low increases. The global NH3 emissions experienced three distinct periods of low (1850–1964, slope = 0.059 mg m−2 y−1), high (1965–1988, slope = 0.389 mg m−2 y−1), and medium (1989–2014, slope = 0.180 mg m−2 y−1) rates of increase. Starting from the high rate of increase period, the hotspots of global NH3 emissions gradually shifted from Europe to East and South Asia. Looking ahead, our findings suggest that the global NH3 emission rate will tend to slow down under the Representative Concentration Pathway (RCP) 4.5 and RCP8.5 warming scenarios. However, compared with the medium-rate increasing period, the moderate and heavy NH3 emission areas under RCP4.5 and RCP8.5 scenarios will show a tendency to expand by 2060, with the proportion of area covered by heavy emissions increasing by 0.55% and 0.56%, respectively. In conclusion, our study highlights that NH3 pollution remains a significant environmental challenge in the future period, with Asia and Europe being the key areas requiring attention for NH3 emission reduction.

show abstract

Section: Temporal Evolution Of Nh 3 Emissions In Six Continents Over ...mentioning

confidence: 99%

Section: Characteristics Of the Temporal Dynamics Of Global Nh 3 Emis...mentioning

confidence: 99%

Increasing NH3 Emissions in High Emission Seasons and Its Spatiotemporal Evolution Characteristics during 1850–2060

Wang

2023

Atmosphere

View full text Add to dashboard Cite

show abstract

“…However, it is uneconomical and causes environmental pollution, which includes leaching of K + into ground water, surface leaching, or run-off of these nutrients to water bodies [11]. Furthermore, in term of economics, it is important to manage K to minimize losses so as to avoid extra or excessive fertilization [12]. Studies have been carried out to improve soil pH through liming.…”

Section: Introductionmentioning

confidence: 99%

Amending Potassic Fertilizer with Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Potassium Availability in a Tropical Acid Soil

et al. 2021

View full text Add to dashboard Cite

In Ultisols and Oxisols, potassium (K) in the soil solution is leached from the rhizosphere before it interacts with soil colloids, or exchanged with other cations at the exchange sites of the soils because of the abundance of kaolinite clay minerals. These soils are highly weathered, low in organic matter, and low in pH, but high aluminium (Al) and iron (Fe) ions. Hence, K becomes unavailable for plants, and this compromises crop production and farmers’ profitability. The pH neutralizing effects of sago (Metroxylon sagu) bark ash and the ability of charcoal to chelate Al and Fe could be utilized to improve soil pH, reduce soil acidity, and improve K availability. The objective of this study was to determine the effects of amending muriate of potash (MOP) with charcoal and sago bark ash on selected soil chemical properties in a tropical acid soil (Typic Paleudults) over 90 days in a laboratory incubation. The proportions of charcoal and sago bark ash were varied at 20%, 40%, 60%, 80%, and 100%, but the MOP was fixed at 100% of the recommended rate. Selected soil chemical properties before and after incubation were determined using standard procedures. Results revealed that co-application of the soil amendments with MOP increased soil-exchangeable K compared with conventional practice. Moreover, amending the acid soil with charcoal and sago bark ash positively enhanced the availability of other base cations and soil cation exchange capacity (CEC). This was possible because the amendments increased soil pH and reduced exchangeable acidity, exchangeable Al3+, and exchangeable Fe2+. However, there was no significant improvement in water-soluble K (WSK) in the soil with or without charcoal and sago bark over the 90 days laboratory study. The findings of this study suggested that increasing soil pH could potentially improve soil K sorption capacity. Thus, the optimum rates of charcoal and sago bark ash to increase K availability were found to be 80% charcoal with 80% sago bark ash, 60% charcoal with 60% sago bark ash, and 80% charcoal with 40% sago bark ash, because these rates improved soil-exchangeable K+ and CEC significantly, besides minimizing soil-exchangeable acidity.

show abstract

Water flow and nitrate transfer simulations in rice cultivation under different irrigation and nitrogen fertilizer application managements by HYDRUS-2D model

et al. 2020

View full text Add to dashboard Cite

Trend of fertilizer application during the last three decades (Case study: America, Australia, Iran and Malaysia)

Cited by 9 publications

References 5 publications

Increasing NH3 Emissions in High Emission Seasons and Its Spatiotemporal Evolution Characteristics during 1850–2060

Increasing NH3 Emissions in High Emission Seasons and Its Spatiotemporal Evolution Characteristics during 1850–2060

Amending Potassic Fertilizer with Charcoal and Sago (Metroxylon sagu) Bark Ash to Improve Potassium Availability in a Tropical Acid Soil

Water flow and nitrate transfer simulations in rice cultivation under different irrigation and nitrogen fertilizer application managements by HYDRUS-2D model

Contact Info

Product

Resources

About