Efficiency of fall versus spring applied urea‐based fertilizers treated with urease and nitrification inhibitors I. Ammonia volatilization and mitigation by NBPT

Lasisi, Ahmed; Akinremi, O. O.; Qiang, Zhang; Kumaragamage, Darshani

doi:10.1002/saj2.20062

Cited by 16 publications

(14 citation statements)

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“…The addition of NI with NBPT significantly reduced the inhibitory effect of NBPT on urea hydrolysis by an average of 21% across soils. The increased rate of urea hydrolysis with DI relative to NBPT only, partly explains the reason for the greater NH 3 volatilization from UR DI than UR NBPT measured in previous studies (Frame, 2017; Soares et al., 2012; Lasisi, Akinremi, Zhang, & Kumaragamage, 2020).…”

Section: Resultsmentioning

confidence: 80%

Nitrification inhibitor reduces the inhibitory effect of N‐(n‐butyl) thiophosphoric triamide (NBPT) on the hydrolysis of urea

Lasisi

Akinremi

Kumaragamage

2020

Soil Science Soc of Amer J

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The addition of nitrification inhibitor (NI) with a urease inhibitor, N-(n-butyl) thiophosphoric triamide (NBPT), has been reported to offset the reduction of ammonia volatilization by NBPT. An incubation study was conducted to investigate the interaction between NBPT and NI (3,4-dimethyl pyrazole phosphate) on hydrolysis of urea in five soils with a range of physico-chemical properties. Untreated urea (UR), NBPT treated urea (UR NBPT), or NBPT+NI treated urea (UR DI) were surface-applied (250 kg N ha −1) to each soil. The soils were incubated (21 • C) and destructively sampled nine times during a 22-day period. Urea hydrolysis rate (k; d −1) was measured by the disappearance of urea with time and modeled with a first-order kinetic. The value of k was in the order of UR (0.321) > UR DI (0.183) > UR NBPT (0.151) across the five soils. While the urease inhibitor, NBPT, significantly reduced k in each soil, the addition of a NI with NBPT significantly decreased the ability of NBPT to inhibit urea hydrolysis by an average of 21% across the soils. We found that NI significantly reduced the half-life of urea by about 1 d when compared with NBPT alone. Principal component analysis showed that k did not depend on any of the soil properties, rather, it depended on the type of treatment. Net nitrification rate constant was significantly greater in UR than UR NBPT in loam and clay soils but not different in sandy loam soils. We conclude that the often-reported increase in ammonia volatilization with the double inhibitor relative to NBPT alone may not only be due to the persistence of ammonium but may also be due to an increased rate of urea hydrolysis in the presence of a NI. 1 INTRODUCTION Globally, urea accounts for about 50% of nitrogen (N) fertilizers that are applied to agricultural and horticultural Abbreviations: DI, double inhibitor; NBPT, N (n-butyl) thiophosphoric triamide; NI, nitrification inhibitor; UR DI , double inhibitor treated urea; UR NBPT , NBPT treated urea. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Resultsmentioning

confidence: 80%

Nitrification inhibitor reduces the inhibitory effect of N‐(n‐butyl) thiophosphoric triamide (NBPT) on the hydrolysis of urea

Lasisi

Akinremi

Kumaragamage

2020

Soil Science Soc of Amer J

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“…The lack of any effect of NBPT on the yield and N uptake of small grains is because the N conserved with the use of NBPT is relatively small compared with the influence of applied N fertilizers and soil N (residual nitrate + mineralization) on the yield of wheat and canola. Ammonia volatilization measurements in these two fields following fertilizer application showed an average of 7 kg N ha −1 difference in N losses between urea‐based fertilizers with and without inhibitors over the two growing seasons (Lasisi et al., 2020). A meta‐analysis by Abalos, Jeffery, Sanz‐Cobena, Guardia, and Vallejo (2014) showed that yield response to the use of NBPT and NI occurs more consistently in crops with high rather than low to medium N requirements.…”

Section: Discussionmentioning

confidence: 99%

“…• Fall-applied urea-based fertilizers are less efficient than spring-applied ones • The effect of N-(n-butyl) thiophosphoric triamide (NBPT) on yield was soil-specific • NBPT's potential to bridge the fall-spring N use efficiency gap is soil-specific Lasisi, Akinremi, Zhang, & Kumaragamage, 2020). Furthermore, the study of Chantigny et al (2019) had shown that significant N transformation and losses could occur during the winter months in the northern Great Plains.…”

Section: Core Ideasmentioning

confidence: 99%

“…The delay is supposed to reduce N losses before the soil freezes up by inhibiting microbial activity. However, recent studies in the northern Great Plains have shown that significant ammonia volatilization could occur from urea‐based fertilizers that were not treated with NBPT in late fall even when the soil temperature was below 0 °C (Engel, Jones, Romero, & Wallander, 2017; Lasisi, Akinremi, Zhang, & Kumaragamage, 2020). Furthermore, the study of Chantigny et al.…”

Section: Introductionmentioning

confidence: 99%

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Efficiency of fall versus spring applied urea‐based fertilizers treated with urease and nitrification inhibitors II. Crop yield and nitrogen use efficiency

Lasisi

Akinremi

Kumaragamage

2021

Soil Science Soc of Amer J

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The urease inhibitor [N‐(n‐butyl) thiophosphoric triamide (NBPT)] and the nitrification inhibitor (NI) 3,4‐dimethyl pyrazole phosphate have been reported to conserve urea‐based N fertilizers by reducing N losses. However, their effects on crop yield and N uptake are inconsistent and fall‐applied N fertilizers are usually less efficient than spring applications. We conducted a 2‐yr field study on contrasting soils [Carman sandy loam (CSL) and Portage clay loam (PCL)] on the effects of NBPT with and without NI on grain yield, grain N removal, and crop N uptake from fall and spring surface‐applied urea‐based fertilizers. Fertilizer treatments (75 or 100 kg N ha−1) were urea and urea ammonium nitrate (UAN) with and without NBPT or NBPT + NI. Canola (Brassica napus L.) and wheat (Triticum aestivum L.) yield, N removal, and N uptake were not consistently greater for urea and UAN treated with inhibitors than for untreated urea and UAN. The inhibitors’ effect on yield and N uptake was observed in urea treated with NBPT in CSL but not PCL. Although agronomic efficiency was significantly greater for spring‐applied untreated urea or UAN than fall‐applied urea or UAN with and without inhibitors in PCL, no significant difference appeared between fall‐applied urea or UAN treated with inhibitors and spring‐applied untreated urea or UAN in CSL. The N conserved by the inhibitors did not appear in the soil as nitrate‐N. Although inhibitors may reduce N losses, their use to increase yield and bridge the efficiency gap between fall‐ and spring‐applied urea‐based fertilizers may be site‐specific.

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“…The efficiency of inhibitors mainly depends upon the temperature and pH of soil, and low concentration of inhibitor. Most of the inhibitors including NBPT are highly effective in neutral soil with a small range of organic matter [29,30]. In addition to chemical inhibitors, some natural products such as phenolic compounds (methyl gallate, stilbenoids, and flavonoids) have the ability to suppress the urease efficiency [28].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Urease and Nitrification Inhibitors in the Reduction of Ammonia Volatilization

Hussain¹,

Jabeen²,

Afsheen³

et al. 2021

Preprint

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<p>Nitrogen (N) is deficient in more than 90% of soils of Pakistan mainly because of low organic matter contents. The use of nitrogenous fertilizers is a common practice for sustainable and profitable crop yields. A significant portion of added fertilizers is lost through volatilization, leaching, and denitrification. Low use efficiency of these fertilizers in our climate is a serious concern because of high costs and environmental issues. The present study evaluated the novel synergistic effect of urease and nitrification inhibitors such as ammonium thiosulfate (ATS) and 2-Chloro-6-(trichloromethyl)pyridine (Nitrapyrin) to reduce the urea hydrolysis in the soil of Faisalabad, Gujranwala, and Sheikhupura to manage the ammonia as well as N loss. Three different combinations such as A1, A2, and A3 of both inhibitors were prepared with different ratios of 1:1, 0.25:0.75, 0.75:0.25, respectively. Results showed that the minimum urea hydrolysis of about 2.41, 2.79, and 4.68 IU/g soil with A1 combination after 4<sup>th</sup>-day observation with the rate of 0.50% concentration for Faisalabad, Gujranwala, and Sheikhupura, respectively. In addition, results showed the better urease activity at a pH value of 6.50, incubation time of 30 min, and temperature of 37 ℃ for all A1, A2, and A3 combinations with 0.50% concentration. Moreover, inhibitors treated urea showed the plant maximum height of 111, 101, and 101 cm, and root length of 15, 11, and 5 cm, number of tillers of 14, 16, and 19 per panicle, and number of spikes of 37, 21 and 38 per panicle with A1, A2, and A3 combination at 0.50% dose respectively in Faisalabad soil. Overall, it is concluded that 0.50% inhibitor concentration showed the much impressive urease inhibition results followed by 0.25 and 0.10%. However, the application of inhibitors was a good practice to reduce the N loss from soil.</p>

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Efficiency of fall versus spring applied urea‐based fertilizers treated with urease and nitrification inhibitors I. Ammonia volatilization and mitigation by NBPT

Cited by 16 publications

References 41 publications

Nitrification inhibitor reduces the inhibitory effect of N‐(n‐butyl) thiophosphoric triamide (NBPT) on the hydrolysis of urea

Nitrification inhibitor reduces the inhibitory effect of N‐(n‐butyl) thiophosphoric triamide (NBPT) on the hydrolysis of urea

Efficiency of fall versus spring applied urea‐based fertilizers treated with urease and nitrification inhibitors II. Crop yield and nitrogen use efficiency

Synergistic Effect of Urease and Nitrification Inhibitors in the Reduction of Ammonia Volatilization

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