Influence of Organic Matter Vis-à-Vis Humic Acid on the Transformation of Inorganic and Organic Forms of Nitrogen in a Typic Haplustept Soil

Devi, N Surbala; Saha, Dipankar

doi:10.1080/00103624.2017.1323093

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…Potassium humate could absorb the ammonium due to the extensive porous surface area and the high cation exchange capacity [73]. Moreover, the reduced NH 4 + -N concentration observed as a result of the utilization of coated urea potassium humate treatments could potentially be attributed to the existence of a substantial quantity of acidic functional groups provided by the potassium humate [13,34,74].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the application of CRUF is also a secure option for minimizing the damage to crop germination and increasing plant biomass [19,20,[29][30][31]. The combination of inorganic fertilizers and organic materials by coating or granulation is progressively gaining popularity owing to its potential advantages on crop yields and soil health when compared to the use of organic material or inorganic fertilizer as the only source of nutrients [13,[32][33][34]. Potassium humate, derived from organic matter, is known to enhance soil fertility and nutrient availability [35,36].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous studies, it has been reported that combining urea with potassium humate can improve nitrogen use efficiency and mitigate losses through volatilization or leaching [35,39,40,43,44]. The application of a combination of urea with humic compounds enhances nitrogen transformation to the ammonium form NH 4 + -N rather than the ammonia form NH 3 , which would be expected to reduce environmental damage [22,34,39,40]. The higher bond strength with higher concentrations of humate can slow the release of urea into the ammonium form, which then also slows its conversion into the nitrate form, leading to lower N losses [34,37,39,41].…”

Section: Introductionmentioning

confidence: 99%

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Mineral Nitrogen Release Patterns in Various Soil and Texture Types and the Impact of Urea and Coated Urea Potassium Humate on Barley Biomass

Swify,

Mažeika,

Volungevičius

2023

Soil Systems

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Controlled-release urea fertilization is an innovative approach and effective means to reduce the loss of nitrogen and enhance fertilizer use efficiency to optimize crop yield while minimizing the environmental impact. The objective of this study was to investigate the dynamic process of mineral nitrogen (Nmin) release in Luvisols, Cambisols, Retisols, and Arenosols to understand the interaction between soil characteristics and mineral nitrogen release and evaluate the impact of conventional urea compared to coated urea potassium humate on barley biomass production. A pot experiment was conducted under glasshouse conditions (20 ± 2 °C and 60% Humidity). Five treatments including no fertilization as a control (C), 100 kg·N·ha−1 of urea (U100), 200 kg·N·ha−1 of urea (U200), 100 kg·N·ha−1 of coated urea potassium humate (UPH100), and 200 kg·N·ha−1 of coated urea potassium humate (UPH200) were applied to four soil and texture types. Our findings indicate that there are different patterns of mineral nitrogen release across the different soil and texture types. Ammonium levels reached their peak point in all soils within 2–7 days after application. On the other hand, the concentration of nitrate NO3−–N showed a linear increase over 45 days during the experiment. The Retisol, which had a sandy clay texture, obtained the highest concentration of mineral nitrogen in both forms (NH4 and NO3), while the sandy texture of Arenosol showed the lowest accumulation of mineral nitrogen and its forms. The application of potassium humate caused a delay of 1–4 days in the peak of soil ammonium, which at peak accounted for approximately 25–44% of the mineral nitrogen in the soil. Furthermore, the application of urea and coated urea potassium humate exhibited significant effects on barley biomass with an increase of approximately 14–91% compared to the unfertilized treatment (control). This research contributes to our understanding of nutrient dynamics in diverse soil environments and provides insights into optimizing sustainable fertilization strategies such as controlled-release fertilizer application. The implications of these findings highlight the significance of tailored nutrient management practices based on soil texture type, which can lead to improved agricultural productivity and environmental impact.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mineral Nitrogen Release Patterns in Various Soil and Texture Types and the Impact of Urea and Coated Urea Potassium Humate on Barley Biomass

Swify,

Mažeika,

Volungevičius

2023

Soil Systems

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“…Liu et al [20] showed the inhibition of the urease activity by HSs and hypothesized that mechanisms of inhibition may be an interaction of the functional groups of HSs with the thiol group of urease and the formation a larger particle size of the complex to inhibit the activity of urease. Finally, due to the presence of numerous acidic functional groups, conditioning a high exchange capacity, HSs facilitate abiotic fixation of ammonia, which in turn decreases ammonia volatilization and mitigates NO 3 − leaching and N 2 O emissions, thus reducing nitrogen loss [21,22]. Moreover, a big advantage of the use of HSs is the fact that they can be produced at a low cost from a low-rank coal and they are available on the market.…”

Section: Introductionmentioning

confidence: 99%

Humate-Coated Urea as a Tool to Decrease Nitrogen Losses in Soil

Korsakov¹,

Степанов

Pozdnyakov

et al. 2023

Agronomy

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Processes of N transformation in soil as affected by application of the three kinds of urea fertilizers, conventional urea (U), humate-coated urea (U_HA), and urea treated with the urease inhibitor NBPT (U_UI), are examined in a model laboratory experiment. Effects of urea fertilizers on soil chemical (content of water-extractable N-NH4 and N-NO3), and microbiological properties (rate of actual and potential N2O emission, basal and substrate-induced respiration, microbial biomass C, emission of ethylene) are focused to answer the following questions: (i) whether humate-coated urea has the ability to decrease N losses in soil; and (ii) how it affects soil biological activity comparable to synthetic urease inhibitor. The results showed that U_HA demonstrated advantages comparable to U in its ability to decrease N losses in soil: it increased N-NH4 content by 35%, reduced nitrate content by 9%, and decreased N2O emissions by 50%. U_HA promoted basal soil respiration by 10% and the specific activity of the soil microbial community by 7%, providing the highest metabolic quotient qCO2. Comparably to NBPT-treated U, U_HA mainly shows intermediate results between U-UI and conventional U. Considering the low cost of raw humates, U-HA can be regarded as a promising tool to decrease N losses in soils.

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Effects of Humic Materials on Soil N Transformation and NH3 Loss when Co-applied with 3, 4-Dimethylpyrazole Phosphate and Urea

Liu

Gao

et al. 2022

J Soil Sci Plant Nutr

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Influence of Organic Matter Vis-à-Vis Humic Acid on the Transformation of Inorganic and Organic Forms of Nitrogen in a Typic Haplustept Soil

Cited by 5 publications

References 20 publications

Mineral Nitrogen Release Patterns in Various Soil and Texture Types and the Impact of Urea and Coated Urea Potassium Humate on Barley Biomass

Mineral Nitrogen Release Patterns in Various Soil and Texture Types and the Impact of Urea and Coated Urea Potassium Humate on Barley Biomass

Humate-Coated Urea as a Tool to Decrease Nitrogen Losses in Soil

Effects of Humic Materials on Soil N Transformation and NH3 Loss when Co-applied with 3, 4-Dimethylpyrazole Phosphate and Urea

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