Environmentally friendly urea produced from the association of N-(n-butyl) thiophosphoric triamide with biodegradable polymer coating obtained from a soybean processing byproduct

Santos, César Ferreira; Aragão, Osnar Obede da Silva; Silva, Douglas Ramos Guelfi; Jesus, Ederson da Conceição; Chagas, Wantuir Filipe Teixeira; Correia, Paulo Rogério Miranda; Moreira, Fátima Maria de Souza

doi:10.1016/j.jclepro.2020.123014

Cited by 26 publications

(20 citation statements)

References 47 publications

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“…1). That is because when urea is applied to the soil, without any additive or technology that reduces its solubility or the hydrolysis rate, ammonia is rapidly created in the solution and catalyzed by urease into NH 3 and CO 2 14,10 . If not incorporated, this ammonia becomes susceptible to losses by volatilization.…”

Section: Discussionmentioning

confidence: 99%

“…The N-NH 3 losses are higher with the use of urea without any kind of technologies, and are intensi ed by soil and climate conditions such as pH, CEC, humidity, temperature and level of urease activity in the soil, relative air humidity, rainfall, and presence of crop residues on the soil 7,8,9 . Considering the typical tropical conditions in Brazil, these losses can be aggravated with average losses of N-NH 3 around 30% in the varied cultivation systems 4,10,11 .…”

Section: Introductionmentioning

confidence: 99%

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Corn Cropping System And Nitrogen Fertilizers Technologies Affect Ammonia Volatilization In Brazilian Tropical Soils

Santos

Pinto

Guelfi

et al. 2021

Preprint

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With the advance of the no-tillage system (NT system) in Brazil, the adoption of technologies for nitrogen fertilization in these soils become essential for increasing the efficiency of N use in the system. In this sense, the objective of this study was to quantify ammonia losses, N removal in grains, and with 2nd crop yield in NT system and conventional (T system) planting areas that received application of different N fertilizers and their technologies. Ammonia volatilization, N extraction in grains and corn yield in response to the application of conventional fertilizers were compared to urease inhibitors treated urea in NT and T systems. The treatments were: no-N (Control); Prilled urea (PU); urea + NBPT (UNBPT); urea + Cu + B (UCuB); ammonium nitrate (AN), and ammonium sulfate (AS). In the NT system, the N-NH3 losses were 49% greater than in the T system; without differences for corn yield. The fertilizers as AN, and AS had the lowest N-NH3 losses, regardless of tillage system. UNBPT reduced the mean N-NH3 loss by 33% compared to PU. UNBPT (1,200 mg kg-1) and UNBPT (180 mg kg-1) reduced by 72% and 22% the N-NH3 losses compared to PU in the NT system.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corn Cropping System And Nitrogen Fertilizers Technologies Affect Ammonia Volatilization In Brazilian Tropical Soils

Santos

Pinto

Guelfi

et al. 2021

Preprint

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“…The soil used for the greenhouse experiment is a Latossolo, according to the Brazilian System of Soil Classification ( Santos et al., 2020). We chose a soil profile with a depth of 4 m from a native area (21°13′49′′S, 44°58′02′′W, 929.64 m asl) within the Federal University of Lavras (UFLA), Minas Gerais state, Brazil.…”

Section: Methodsmentioning

confidence: 99%

“…However, knowledge about N fertilizers has increased over time, and the development of agricultural innovations and technologies to improve the efficiency of urea use without incorporation is an important aim ( de Almeida et al., 2019). There are many strategies to improve nitrogen‐use‐efficiency including the following: genetic breeding, biostimulants, precision agriculture and N‐fertilizer technologies ( Fageria and Baligar , 2005; Halpern et al., 2015; Santos et al., 2020). In this scope, the use of enhanced‐efficiency fertilizer technologies is an interesting option to reduce N‐losses from urea applied to the soil surface ( Snyder , 2017; Dimkpa et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Fertilizing maize croppings with blends of slow/controlled‐release and conventional nitrogen fertilizers

Andrade

Guelfi

Chagas

et al. 2021

J. Plant Nutr. Soil Sci.

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Background: Blends of controlled‐release and slow‐release urea may help to synchronize N release from fertilizers and N uptake by maize to improve the plant nitrogen use efficiency. Aim: We aimed to investigate the effects of slow‐release urea and controlled‐release urea and their blends with uncoated urea to release N for maize uptake over time in comparison to urea and ammonium nitrate. Methods: The experiment was performed under greenhouse conditions, and the treatments consisted of conventional urea, ammonium nitrate, three controlled‐release ureas (Multicote 4M®, Nitrocote®, and polyurethane‐coated urea), one slow‐release urea, and mixtures of controlled‐ release urea and slow‐release urea with uncoated urea. These treatments were applied at concentrations of 0, 150, 300, and 450 mg N kg−1 of soil. We evaluated the dry mass, nitrogen accumulation in the shoots, agronomic efficiency index and applied nitrogen recovery after each of three maize croppings. Furthermore, we characterized the N release pattern of the controlled‐release ureas and their coating thicknesses by using scanning electron microscopy. Results: The N release curves showed that Multicote 4M®, Nitrocote® and urea + polyurethane reached 80% of the N released in water at 40°C at 36, 30, and 13 d after incubation. The highest cumulative nitrogen accumulation (1127.4 mg pot−1), agronomic efficiency index (122.3%), and applied nitrogen recovery (69.3%) occurred with ammonium nitrate, with a low residual effect of only 25.4% of the total N accumulated after 35 d of cultivation. The highest cumulative dry mass was produced when the maize was fertilized with a blend in which 40% of the N came from Nitrocote® (44.8 g pot−1). Conclusions: The results showed that ammonium nitrate is an important option as an N source, but it has no residual effect. Controlled‐ release ureas and their blends have a delayed N release and promote constant N uptake after 70 d. After 70 d, the applied N rates were also more important than the N fertilizer technologies. An adequate mixture of N fertilizers could be an interesting option to help synchronize N release and uptake by maize. Technologies involving urea blends could be an option to improve the nitrogen use efficiency in comparison to that obtained by using uncoated urea while decreasing costs in comparison with the application of 100% controlled‐release urea or slow‐release urea.

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“…Nitrogen (N) is the most important mineral element for crop growth ( Nasima, 2011 ; Santos et al, 2020 ) and greatly influences the yield and quality of agricultural products ( Savin et al, 2019 ). However, soil N supply is limited and N fertilizers are commonly applied to maintain crop yield levels ( Santos et al, 2020 ; Khampuang et al, 2021 ). The improvement of soil fertility requires the use of fertilizers, which now play an important role in agricultural productivity and food security.…”

Section: Introductionmentioning

confidence: 99%

Coated, Stabilized Enhanced-Efficiency Nitrogen Fertilizers: Preparation and Effects on Maize Growth and Nitrogen Utilization

Dong

et al. 2021

Front. Plant Sci.

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Coated, slow/controlled release, or stabilized enhanced-efficiency nitrogen fertilizers (EENFs) are effective in improving nitrogen utilization efficiency (NUE) and crop yield. Better performance is expected from coated, stabilized EENFs where urease and nitrification inhibitors are treated in coated fertilizers. Firstly, five coated EENFs with different mass proportions of nature rubber (NR) in coating were prepared: CU0, CU1, CU2, CU3, CU4, and CU5 (0, 10, 20, 30, 40, and 50% of NR in coating). The controlled release performance of CU was tested by hydrostatic release test and the microstructure of controlled release urea, so as to screen the optimal addition ratio of NR (ER: NR = 7:3, CU3). Secondly, two coated, stabilized EENFs, CSU1 and CSU2, were prepared with natural rubber-modified epoxy resin (ER: NR = 7:3) as coating material. Seven treatments of different N fertilization were set up: CK (no N fertilization), urea, CU3, SU1, and SU2 (urease and nitrification inhibitors-treated urea fertilizers), CSU1 and CSU2 (urease and nitrification inhibitors-treated natural rubber-modified epoxy resin-coated urea fertilizers). Ammonia volatilization experiment and column leaching experiment showed that compared with conventional urea, NH3 volatilization loss was reduced by 20% and inorganic N leaching loss was reduced by 26% from CSU2, respectively. In the pot experiment, maize grain yield of 162.92 and 206.96 g/pot was achieved by CSU1 and CSU2, respectively, 41 and 79%, respectively, higher than that achieved by conventional urea. SUs treatments were more effective than conventional urea treatment in improving maize grain yield and NUE, but lower than in CSUs. The NUE, nitrogen fertilizer apparent utilization efficiency, partial factor productivity of applied N, and nitrogen utilization efficiency were 46, 30, 46, and 32%, respectively, higher in CSU1 and 58, 62, 58, and 29%, respectively, higher in CSU2 than in the conventional urea treatment. Compared with CSU1, CSU2 had better agronomic effectiveness with a higher NUE. It is recommended that urease and nitrification inhibitors be sandwiched between urea prill and the coating for preparation of novel, environmentally friendly coated, stabilized EENFs with high agronomic effectiveness, high NUE, and low N loss.

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Environmentally friendly urea produced from the association of N-(n-butyl) thiophosphoric triamide with biodegradable polymer coating obtained from a soybean processing byproduct

Cited by 26 publications

References 47 publications

Corn Cropping System And Nitrogen Fertilizers Technologies Affect Ammonia Volatilization In Brazilian Tropical Soils

Corn Cropping System And Nitrogen Fertilizers Technologies Affect Ammonia Volatilization In Brazilian Tropical Soils

Fertilizing maize croppings with blends of slow/controlled‐release and conventional nitrogen fertilizers

Coated, Stabilized Enhanced-Efficiency Nitrogen Fertilizers: Preparation and Effects on Maize Growth and Nitrogen Utilization

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