Reducing ammonia volatilization and increasing nitrogen use efficiency in machine-transplanted rice with side-deep fertilization in a double-cropping rice system in Southern China

Zhong, Xuemei; Zhou, Xuan; Fei, Jiangchi; Huang, Ying; Wang, Gang; Kang, Xin; Hu, Wenfeng; Zhang, Huiru; Rong, Xiangmin; Peng, Jianwei

doi:10.1016/j.agee.2020.107183

Cited by 57 publications

(29 citation statements)

References 52 publications

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“…It is evident that nitrogen loss via NH 3 volatilization increases in conjunction with increasing proportions of basal or topdressing nitrogen . Indeed, the current study was purposefully conducted in this region to demonstrate that NH 3 volatilization from basal nitrogen fertilizer is higher than that from topdressing nitrogen fertilizer (Zhong et al, 2021). This may be due to immediate irrigation following topdressing nitrogen application causing in ltration of fertilizer into the deep soil, with a subsequent reduction in the amount of ammoniacal nitrogen in the top soil layer.…”

Section: The Effect Of Split Nitrogen Fertilizer On Ammonia Volatilizationmentioning

confidence: 88%

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

Zhang¹,

Yu²,

Zhang³

et al. 2021

Preprint

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Scholars have proposed the practice of split N fertilizer application (SNFA), which has proven to be an effective approach for enhancing N use efficiency. However, the effect of SNFA on NH3 volatilization, nitrification and denitration in soil, remain largely unknown. As such, the current study assessed soil NH3 volatilization, nitrification and denitrification intensities, abundance of nitrogen cycle-related funetional genes, and invertase activity for different treatments. We applied a rate of 240 kg·ha-1 of N, and the following fertilizer ratios of the percent base to that of topdressing under water-saving irrigation: N1 (basal/dressing, 100%/0%), N2 (basal/dressing, 70%/30%), N3 (basal/dressing, 50%/50%), N4 (basal/dressing, 30%/70%), and N5 (basal/dressing, 0%/100%). N3 treatment resulted in a significant decrease in rate of NH3 volatilization. This treatment also significantly reduced nitrification and denitrification intensities, primarily owing to the reduced functional genes abundance involved in the nitrogen cycle (Amoa-AOB, nirK and nirS) and reduced invertase activity (urease, nitrate reductase, nitrite reductase) in wheat-land soil. 15N tracer studies further demonstrated that N3 treatments significantly increased the grain nitrogen accumulation by 9.50-28.27% compared with that under other treatments. This increase was primarily due to an increase in the amount of N absorbed by wheat from soil and fertilizers, which was caused by an enhancement in total N uptake (7.2-21.81%). Collectively, these results suggest that the N3 treatment (basal/dressing, 50%/50%) improves N uptake by wheat, reduces the soil NH3 volatilization rate, and has the potential to reduce the amount of N2O generated by nitrification and denitrification.

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Section: The Effect Of Split Nitrogen Fertilizer On Ammonia Volatilizationmentioning

confidence: 88%

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

Zhang¹,

Yu²,

Zhang³

et al. 2021

Preprint

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“…This promotion effect illustrated by the reductions in the mean difference between observed and adjusted agronomic properties has two main pathways: the first is altering AV by inhibiting the urease activity stronger than mulch and biochar [7,72]. The second is that inhibitors showed positive effects on crop yield (5.3% increase more than single urea in a meta-analysis by Silva, et al [73]) and resulted in higher NUE than biochar and mulch [54,74]. Additionally, there are numerous contradictory findings about the role of biochar in reducing agronomic-scaled NH 3 , where biochar's effect on mitigating AV and optimizing crop yield depends mainly on its type, rate, and soil properties, especially pH [75].…”

Section: Response Of Av Agronomic Weights To Applied Amendmentsmentioning

confidence: 99%

“…Additionally, these losses decrease the crop yield, which negatively affects the agronomic weights (YSFP, NUE, NAE, and PAN). No direct measurements have been introduced to weight the agronomic AV effects, but a statistical description of these responses was introduced in numerous studies [41,54]. There were negative correlations between AV and agronomic parameters of wheat, maize, and rice (NAE, PAN as nitrogen partial factor productivity and NUE) [20,54,55].…”

Section: Overall Description Of the Study Variablesmentioning

confidence: 99%

“…No direct measurements have been introduced to weight the agronomic AV effects, but a statistical description of these responses was introduced in numerous studies [41,54]. There were negative correlations between AV and agronomic parameters of wheat, maize, and rice (NAE, PAN as nitrogen partial factor productivity and NUE) [20,54,55]. These parameters responded significantly to AV in rice higher than maize and then wheat as a result of differences between AV rates from each crop, wherein AV losses represented 30-39% of the applied N in rice, 11-48% in maize, and less in wheat (1-20%) [14].…”

Section: Overall Description Of the Study Variablesmentioning

confidence: 99%

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Agronomic Efficiency Losses by Ammonia Emission from Staple Crops in China as Response to Various Mitigation Strategies: A Meta-Analysis Study

et al. 2021

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Economic losses and environmental hazards are meaningful problems of emitted ammonia induced by extensive use of synthetic nitrogen fertilizers. The concept presented as yield scaled fertilizer productivity (YSFP) in our meta-analysis in addition to nitrogen use efficiency (NUE), nitrogen agronomic efficiency (NAE), and productivity of applied nitrogen (PAN) were used to weight ammonia emission (AV)-induced reductions in wheat, maize, and rice production. The comprehensive meta-analysis was used to weight the reductions in these parameters by AV as the difference between observed means of the collected studies and their adjusted means using AV factor. There were higher reductions in agronomic production induced by AV in rice than maize and wheat. AV-induced reductions in PAN of rice, maize, and wheat were decreased by 4.99, 3.71, and 2.42 (kg grains kg−1 N), respectively. YSFP and PAN recorded the highest sensitivity to AV in wheat (R2 = 0.88 for both) and rice (R2 = 0.92 and 0.89, respectively), while NUE was the most efficient parameter in weighting AV agronomic effects (R2 = 0.81). Slow-released N fertilizers resulted in the lowest reductions in AV agronomic parameters followed by organic amendments and then urea while using other synthetic fertilizers recorded the highest reductions by 3.90, 6.40, 1.41, and 4.70 in YSFP, NUE, NAE, and PAN, respectively. Inhibitors had the highest effect on mitigating AV agronomic losses compared with biochar and mulching and affected the parameters following that order as percentages of no amendments, YSFP (52.63%) > PAN (47.18%) > NUE (40.83%) > NAE (38.75%). This study outlines the reductions in agronomic production induced by AV and weights the efficiency of various mitigation strategies under various agronomic conditions. The results proved the efficiency of YSFP with NUE parameters to weight the effect of AV on crop yield, while suggesting to find out more applicable parameters in further studies.

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“…Reducing the amount of N fertilizer use can decrease ammonia volatilization, but the space for reducing the amount of fertilizer is limited to maintain crop yield 25 . Some studies reported that fertilization methods (combined with biochar, straw return, deep fertigation, film mulching) and modified fertilizer can mitigate ammonia volatilization and increase NUE in agroecosystems 26 – 30 , whereas other results found that these measures have been limited generalization due to the complex production process, lack of proper operating machines, and uncertain application effects 27 , 31 – 34 . However, it has been recognized that fertigation is an efficient strategy for controlling the placement, time, and N fertilization rate, thereby increasing NUE 35 .…”

Section: Introductionmentioning

confidence: 99%

Effects of fertilizer under different dripline spacings on summer maize in northern China

Bai

Wang

et al. 2021

Sci Rep

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Maximizing grain yields with effective fertilization technologies and minimizing nitrogen losses is essential in agroecosystems. In this research, we conducted a two-year field experiment to explore whether dripline spacing and fertilization rate would affect maize grain yield. Two dripline spacings (i.e., one drip line per row of maize with a row space of 60 cm and one drip line per two rows of maize) and two fertilization rates (i.e., high fertilization level: N, 180 kg ha−1; P2O5, 90 kg ha−1; and K2O, 90 kg ha−1 and low level: N, 139.5 kg ha−1; P2O5, 76.5 kg ha−1; and K2O, 76.5 kg ha−1) were employed in this research. The results showed that maize yield was significantly affected by both dripline spacing and fertilization rate. The maize yield was 10.2% higher in the treatment with one drip line per two rows than that in the treatment with one drip line per row. Maize yield increased by 10.9% at the high fertilization level compared to that at the low fertilization level. The quantity of cumulative ammonia volatilization was reduced by 15.1% with one drip line per two rows compared to that with one drip line per row, whereas it increased by 26.9% at the high fertilization level compared with that at the low fertilization level. These results indicated that one drip line per two rows with a high fertilization rate increased the yield and could reduce the environmental burden, which may be economically beneficial and environmentally sound for maize fertigation for green agricultural development.

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Reducing ammonia volatilization and increasing nitrogen use efficiency in machine-transplanted rice with side-deep fertilization in a double-cropping rice system in Southern China

Cited by 57 publications

References 52 publications

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

Impacts of Fertilization Optimization on Ammonia Volatilization, Soil Nitrification, Denitration Intensity From Wheat Fields and Nitrogen Utilization Under Water-saving Irrigation

Agronomic Efficiency Losses by Ammonia Emission from Staple Crops in China as Response to Various Mitigation Strategies: A Meta-Analysis Study

Effects of fertilizer under different dripline spacings on summer maize in northern China

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