Combining Azolla and urease inhibitor to reduce ammonia volatilization and increase nitrogen use efficiency and grain yield of rice

Yang, Guoying; Ji, Hongting; Jiang, Sheng; Zhang, Yuefang; Feng, Yanfang; Guo, Zhi; LiuGen, Chen

doi:10.1016/j.scitotenv.2020.140799

Cited by 60 publications

(32 citation statements)

References 42 publications

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“…After the 10 th day of application ATS loss their inhibition potential due increase in substrate concentration and structure confirmation [42]. Yang and co-workers also reported that the synergistic effect of Azolla and urease inhibitor significantly reduced the NH 3 emission by about 61.1-63.6% in the rice field [43]. Similarly, Yusop et al [44] demonstrated that the synergistic effect of nitrification and acid-based urease inhibitor (DMPP/Cu/Zn) significantly reduced the ammonia emission of 221.73 and 242.41 mg/kg for Selangor and Cempaka soil respectively.…”

Section: Effect Of Combination A2 On Urease Activity In Rice Cultivated Soilmentioning

confidence: 89%

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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Section: Effect Of Combination A2 On Urease Activity In Rice Cultivated Soilmentioning

confidence: 89%

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

Hussain¹,

Jabeen²,

Afsheen³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…Thus, it could depress the rise in pH caused by algal photosynthesis and decrease the temperature in the floodwater. In addition, Azolla cover reduced the NH 3 loss by assimilating NH 4 + -N in the floodwater (Yao et al, 2018c;Yang et al, 2020). Azolla cover substantially reduced the TAV by 21.0 −30.9% under the N application rate (Table 2).…”

Section: Combined Effect Of N Fertilizer Reduction and Azolla Cover Omentioning

confidence: 94%

“…1) and pH 0.1-0.3 units in the surface water (Table 3). The lower surface water c(NH 4 + ) was ascribed to the lower N application rate and the absorption of NH 4 + by Azolla (Yang et al, 2020). The N fertilizer reduction decreased the pH of surface water (Silva et al, 2016).…”

Section: Combined Effect Of N Fertilizer Reduction and Azolla Cover Omentioning

confidence: 99%

“…To reduce the AV and increase the NUE of rice, many technical measures have been developed, such as applying enhanced efficiency fertilizers (slow / controlled-release fertilizers and urease inhibitors) (Linquist et al, 2013;Wang et al, 2018;Yang et al, 2019;Yang et al, 2020), using new types of biochar (Chu et al, 2020;Yu et al, 2020), and improving fertilization techniques (split applications of N fertilizer and N fertilizer deep placement) (Huang et al, 2016;Liu et al, 2015;Yao et al, 2018a). However, enhanced efficiency fertilizers and biochar are generally too expensive, and thereby, limiting their use in rice production.…”

Section: Introductionmentioning

confidence: 99%

“…It forms a mat that covers the surface water to reduce AV by preventing the escape of NH 3. It could also absorb the NH 4 + and decrease the temperature and pH of the surface water, thereby reducing AV (Yao et al, 2018c;Yang et al, 2020). As green manure, Azolla can enhance the properties of the soil and enhance the microbial population of the soil, thereby improving soil fertility and rice yield (Kollah, Patra & Mohanty, 2015;Subedi & Shrestha, 2015;Yao et al, 2018c).…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen fertilizer reduction in combination withAzollacover for reducing ammonia volatilization and improving nitrogen use efficiency of rice

Yang

Liu

et al. 2021

PeerJ

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Background Excessive nitrogen (N) application rate with low N use efficiency (NUE) caused a considerable amount of N losses, especially ammonia volatilization (AV). Proper N fertilizer reduction (RN) could significantly reduce AV. However, continuous RN led to a nutrient deficiency in the soil and therefore negatively impacted the NUE and rice yield. Paddy Azolla, a good green manure, is considered as a promising measure to decrease AV and improve NUE and grain yield of rice. However, there is limited information on the integrated effects of RN and Azolla cover on the AV, NUE, and rice yield, especially in the highly fertilized rice-growing systems. Methods The experiment was conducted including eight treatments: the control (without N fertilizer and Azolla cover), Azolla cover without N fertilizer (A), farmer’s N application rate (FN), FN + Azolla cover (FNA), 15% RN from FN (RN15), RN15 + Azolla cover (RN15A). 30% RN from FN (RN30), RN30 + Azolla cover (RN30A). The integrated effects of N fertilizer reduction and Azolla cover on AV, NUE, and rice grain was evaluated. Results RN15A and RN30A substantially reduced total AV by 50.3 and 66.9% compared with FN, respectively, primarily due to the lower surface water ammonia concentrations and pH. RN improved the efficiency of Azolla cover on reducing AV, with 4.1–9.9% higher than for FN. Compared with the FN, RN15A and RN30A enhanced apparent N recovery efficiency (ANRE) by 46.5 and 39.1%, which might be responsible for the lower NH3 emission and the increased total N uptake / total chemical N applied. Furthermore, RN15A and RN30A reduced yield-scaled volatilization by 52.3 and 64.3% than for FN, respectively. Thus, combining 15–30% RN with Azolla cover may be a way to reduce AV and improve ANRE without decreasing rice grain yield.

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Effects of optimized nitrogen fertilizer management on the yield, nitrogen uptake, and ammonia volatilization of direct‐seeded rice

Wang

et al. 2023

J Sci Food Agric

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BACKGROUND Direct‐seeded rice has been developed rapidly because of labor savings. Changes in rice cultivation methods put forward new requirements for nitrogen (N) fertilizer management practices. Field experiments with five different fertilizer ratios of basal, tillering and panicle fertilizer, namely N1 (10:0:0), N2 (6:2:2), N3 (4:3:3), N4 (2:4:4) and N5 (0:5:5), were conducted to investigate the effects of different N fertilizer management practices on yield formation, N uptakes, and ammonia (NH3) volatilization from paddy fields in direct‐seeded rice. RESULTS The results showed that the N4 treatment improved grain yield by 5.1% while decreasing NH3 volatilization by 20.4% compared with that of conventional fertilizer treatment (N2). The panicle number per unit area was the key factor to determine the yield of direct‐seeded rice (72%). Excessive N application of basal fertilizer (N1) reduced seedling emergence, N use efficiency, and yield by 45.3%, 160.6%, and 6.9% respectively and increased NH3 volatilization by 28.1% compared with that of the N4 treatment. Removal of basal N fertilizer (N5) N reduced spike number and yield by 13.0% and 6.9% respectively, minimizing NH3 volatilization while affecting the construction of high‐yielding populations compared with that of the N4 treatment. CONCLUSION Optimized N fertilizer management achieved delayed senescence (maintenance of higher leaf Soil Plant Analysis Development meter values in late reproduction), higher canopy photoassimilation (suitable leaf area), higher N fertilizer use efficiency, and less N loss (lower cumulative NH3 volatilization). © 2023 Society of Chemical Industry.

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Combining Azolla and urease inhibitor to reduce ammonia volatilization and increase nitrogen use efficiency and grain yield of rice

Cited by 60 publications

References 42 publications

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

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

Nitrogen fertilizer reduction in combination withAzollacover for reducing ammonia volatilization and improving nitrogen use efficiency of rice

Effects of optimized nitrogen fertilizer management on the yield, nitrogen uptake, and ammonia volatilization of direct‐seeded rice

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