Effect of urea and polymer-coated urea on N content of soil and leaves of maize cultivated in Brazilian Cerrado

Kaneko, Fuminari; Ferreira, João Paulo; Leal, Aguinaldo José Freitas; Cleef, E. H. C. B. Van; Galati, Vanessa Cury; Arf, Orivaldo

doi:10.1016/j.still.2020.104906

Cited by 4 publications

(3 citation statements)

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“…The plant data was collected after 11 weeks of growth at the start of the reproductive phenological stage (Kaneko et al., 2021). As such, the plants were harvested after the rapid vegetative phenological stage, during which the plants have the highest rate of N accumulation (Li et al., 2017).…”

Section: Resultsmentioning

confidence: 99%

“…The use of slow‐release N‐fertilizer (SRF) is one of several strategies for improving NUE and N‐recovery efficiency (RE N ), the fraction of fertilizer N taken up by the plants (Ladha et al., 2005). Sulfur or polymer‐coated urea fertilizers are commonly used as SRFs; however, studies indicate that polymer‐coated urea was unable to increase plant available soil inorganic N or dry biomass yields relative to conventional urea (Kaneko et al., 2021; Nelson et al., 2009). Hence, there is a need to develop more effective SRFs.…”

Section: Introductionmentioning

confidence: 99%

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Impact of biochar‐based slow‐release N‐fertilizers on maize growth and nitrogen recovery efficiency

et al. 2023

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Biochar has been used to address several environmental problems and may be efficacious as a carrier of N‐fertilizer in slow‐release N‐fertilizer (SRF) formulations. Our objective was to compare the efficacy of SRF pellets formulated with different mass ratios of biochar and urea with traditional N‐fertilizers for improving N use efficiency by maize (Zea mays L.) grown under greenhouse conditions. Two different soil types, four SRF formulations with different biochar‐to‐urea (BCN) ratios (1:2 BCN, 1:3 BCN, 1:4 BCN, and 1:6 BCN), three traditional N‐fertilizers (urea, urea ammonium nitrate, and S‐coated urea), and unfertilized controls for each soil were tested. The accelerated urea release test showed significantly less loss of urea for the SRF over time than the traditional N‐fertilizers. The biochar‐based SRF formulations significantly (p < 0.05) decreased nitrate leaching loss for both soils relative to the traditional fertilizers. All the SRF formulations increased maize shoot (1%–34%) and root (0%–23%) biomass, N‐recovery efficiency (17%–50%), and soil potential mineralizable‐N relative to urea and S‐coated urea. The results also indicate that the BCN ratio in the SRF formulation can be used to influence the timing of N release and plant N uptake. The results of the greenhouse study suggest that biochar‐based SRFs have potential agronomic and environmental benefits; however, more research is needed to assess their agronomic value under field conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of biochar‐based slow‐release N‐fertilizers on maize growth and nitrogen recovery efficiency

et al. 2023

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“…• other supplements: phosphogypsum (PG), diammonium phosphate, ZnSO4, NH4Cl or KCl These approaches have different limitations. For example, the use of polymer-covered urea does not lead to an increase in nitrogen availability to plants in the soil, or to an increase in accumulated dry biomass compared to urea [7], [8], or phosphogypsum, depending on the apatite used in its preparation, which usually contains a large number of heavy metals that contaminate the soil.…”

Section: Introductionmentioning

confidence: 99%

Environmentally Acceptable Synthesis of Magnesium Bearing Fertilizers. Iii Solid State Synthesis

Velyanova,

Kossev

2024

ETR

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Nutrition is a key factor in human life and the development of civilization. The production of sufficient food requires the use of: efficient agricultural techniques, suitable soils and the use of nitrogen (N) fertilizers. However, the use of synthetic nitrogen fertilisers is associated with significant problems, caused by the fact that they are not sufficiently retained in soils to be taken up by plants and a significant proportion of the applied fixed nitrogen is lost. This is a serious economic problem for the farmers and a serious environmental problem for the society. In this work, the known methods for reducing the loss of bound nitrogen when fertilizer formulations are applied to the soil are discussed, and a promising preparation is presented, which is a complex of urea with magnesium sulfate, named magnesium sulfate hexaureate hemi hydrate, [Mg ((H2N)2CO)6] SO41/2 H2O, which can find application both alone and in the formulation of the complex fertilizer formulations, as well as a convenient method for its preparation. The use of [Mg ((H2N)2CO)6] SO41/2 H2O, instead of conventional nitrogen fertilisers, besides the reduction of losses of fixed nitrogen, is that it supplies the soil with the trace elements Mg and S. The low hygroscopicity and the good stability of the preparation are also essential. The known ureate complexes of magnesium sulphate and their preparation are discussed. The proposed new method of solid-phase synthesis, has certain advantages. The use of solid synthesis state methods has a number of advantages: solvent-free synthesis, low-temperature operation, high yields, and the absence of by-products make these methods the most environmentally acceptable.

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Root characteristics, utilization of water and nitrogen, and yield of maize under biodegradable film mulching and nitrogen application

Fang

et al. 2022

Agricultural Water Management

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Effect of urea and polymer-coated urea on N content of soil and leaves of maize cultivated in Brazilian Cerrado

Cited by 4 publications

References 20 publications

Impact of biochar‐based slow‐release N‐fertilizers on maize growth and nitrogen recovery efficiency

Impact of biochar‐based slow‐release N‐fertilizers on maize growth and nitrogen recovery efficiency

Environmentally Acceptable Synthesis of Magnesium Bearing Fertilizers. Iii Solid State Synthesis

Root characteristics, utilization of water and nitrogen, and yield of maize under biodegradable film mulching and nitrogen application

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