Nitrapyrin addition mitigates nitrous oxide emissions and raises nitrogen use efficiency in plastic-film-mulched drip-fertigated cotton field

Liu, Tao; Liang, Yongchao; Chu, Guixin

doi:10.1371/journal.pone.0176305

Cited by 15 publications

(9 citation statements)

References 40 publications

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“…Addition of nitrification and urease inhibitors with urea did not affect dry matter, yield, as well as N accumulation, allocation and NRE of cotton in this study. In the same area as in the current study, Liu et al also reported that use of a nitrification inhibitor nitrpyrin did not affect cotton yield under drip-fertigation system 14 . The ineffectiveness of inhibitors could be associated with several factors.…”

Section: Discussionsupporting

confidence: 61%

“…A few studies have investigated the effect of urease and nitrification inhibitors on productivity and NUE of cotton under the drip-fertigated cropping system. For example, in the same area as in the current study, Liu et al found that use of a nitrification inhibitor nitrpyrin did not affect yield but increased NUE of cotton under drip-fertigation system 14 . For irrigated corn in Spain, use of a new nitrification inhibitor DMPSA and drip-fertigation did not affect N uptake or yield but reduced N losses through N 2 O emissions, compared with the conventional system (sprinkler irrigation without inhibitors) 15 .…”

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confidence: 50%

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Agronomic evaluation of polymer-coated urea and urease and nitrification inhibitors for cotton production under drip-fertigation in a dry climate

Tenuta

et al. 2020

Sci Rep

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Interest in the use of enhanced-efficiency nitrogen (N) fertilizers (EENFs) has increased in recent years due to their potential to increase crop yield and reduce environmental N loss. Drip-fertigation is widely used for crop production in arid regions to improve water and nutrient use efficiency whereas the effectiveness of EENFs with drip irrigation remains unclear. A field experiment was conducted in 2015 and 2016 to examine the effects of EENFs on yield, N use and quality of cotton (Gossypium hirsutum) grown under drip-fertigation in arid NW China. Treatments included an unfertilized control and application of 240 kg N ha −1 by polymer-coated urea (ESN), urea alone, or urea plus urease (NBPT) and nitrification (DCD) inhibitors. ESN was all banded in the plant row at planting, whereas urea was applied with 20% N banded at planting and 80% N by six fertigation events over the growing season. Results showed there was generally no treatment effect on seed and lint yield, N concentration or allocations, N recovery efficiency and fiber quality index of cotton. A lack of treatment effect could be due to N supplied with drip-fertigation better synthesized with crop N needs and the relatively high soil native no 3 − availability, which hindered the effect of polymer-coated urea and double inhibitors. These results highlight the challenge of the employment of EENFs products for drip-fertigation system in arid area. Further research is required to define the field conditions under which the agronomic efficiency of EENFs products may be achieved in accordance with weather conditions.

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Section: Discussionsupporting

confidence: 61%

supporting

confidence: 50%

Agronomic evaluation of polymer-coated urea and urease and nitrification inhibitors for cotton production under drip-fertigation in a dry climate

Tenuta

et al. 2020

Sci Rep

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“…A negative exponential relationship of soil pH with N 2 O emissions was observed (Van den Heuvel et al, 2011). Early‐growing‐season flux of N 2 O observed in the DB+NI treatment suggested that NI lowered early soil NO 3 − concentrations or greater plant uptake occurred during the early and mid‐growing season, which decreased the concentration of NO 3 − substrate available for denitrification (Liu et al, 2017; Wolt, 2004). However, the late growing season peak in N 2 O flux in the DB+NI treatment could be explained by the short‐lived impact of NI or due to lower soil pH of the subsoil resulting in higher emissions of N 2 O (Johnson et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Urea Nitrapyrin Placement Effects on Soil Nitrous Oxide Emissions in Claypan Soil

et al. 2019

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Corn (Zea mays L.) production in poorly drained claypan soils in the US Midwest is a challenge due to low soil permeability, which may result in wetter soil conditions and relatively large amounts of soil N2O emissions early in the growing season. The objectives of this study were to determine the effects of urea fertilizer placement with and without nitrapyrin (NI) on daily and cumulative soil N2O emissions, and yield‐scaled N2O emissions in 2016 and 2017. Treatments included urea deep banded to a 20‐cm depth (DB), urea deep banded to 20 cm plus NI (DB+NI), urea incorporated after a surface broadcast application to ∼8‐cm depth (IA), urea broadcast on the soil surface (SA), and a nonfertilized control (NTC). Fertilizer was applied at 202 kg N ha−1. Surface soil N2O efflux rates were generally lower (<50 g N2O‐N ha−1 d−1) during the first 3 wk after N fertilization and latter parts of the growing seasons. When averaged across the 2016 and 2017 growing seasons, all fertilized treatments had significantly greater (2.33–5.60 kg N2O‐N ha−1, P < 0.05) cumulative soil N2O emissions than NTC. The DB+NI treatment had 54 and 55% lower cumulative soil N2O emissions than IA and SA, respectively. In 2017, DB+NI had similar soil yield‐scaled N2O emissions to NTC. Percentage grain yield increase over NTC was highest for DB and DB+NI. Grain yield in 2016 was 14 to 18% higher for DB and DB+NI than SA. Results suggest that DB+NI is an effective management strategy for reducing cumulative soil N2O emissions and increasing grain yields over the growing season. Core Ideas Deep‐banded urea + nitrapyrin had 55% less soil N2O emissions than surface‐applied. Nonfertilized control and deep‐banded urea + nitrapyrin had similar N2O emissions. Deep‐banded urea + nitrapyrin had a 1.6% lower emission factor than surface‐applied urea. Deep‐banded urea had a 1.0% lower emission factor than surface‐applied urea.

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“…The total nitrogen (TN) content was determined by the Kjeldahl method (Bremner, 1960). Ammonium nitrogen (AN) and nitrate nitrogen (NN) were determined with an AA3 continuous flow analytical system (Seal, German) (Liu, Liang, & Chu, 2017). The total phosphorus (TP) was determined by the perchloric acid-concentrated sulfuric acid digestion and the Mo-Sb colorimetric method (Kuo, 1996).…”

Section: Soil Characteristicsmentioning

confidence: 99%

Abundance, rather than composition, of methane‐cycling microbes mainly affects methane emissions from different vegetation soils in the Zoige alpine wetland

et al. 2018

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Methane fluxes, which are controlled by methanogens and methanotrophs, vary among wetland vegetation species. In this study, we investigated belowground methanogens and methanotrophs in two soils under two different dominant vegetation species with different methane fluxes in the Zoige wetland, which was slightly but significantly (p ≤ 0.05) higher in soils covered by Carex muliensis than that in soils covered by Eleocharis valleculosa. Real-time quantitative PCR and Illumina MiSeq sequencing methods were used to elucidate the microbial communities based on the key genes involved in methane production and oxidation. The absolute abundances of methanogens and methanotrophs of samples from C. muliensis were 1.80 ± 0.07 × 10 and 4.03 ± 0.28 × 10 copies g-soil , respectively, and which from E. valleculosa were 3.99 ± 0.19 × 10 and 2.53 ± 0.22 × 10 copies g-soil , respectively. The t-test result showed that both the abundance of methanogens and methanotrophs from C. muliensis were significantly higher (p ≤ 0.05) than that of samples from E. valleculosa. However, the diversities and compositions of both methanogens and methanotrophs showed no significant differences (p ≥ 0.05) between vegetation species. The path analysis showed that the microbial abundance had a greater effect than the microbial diversity on methane production potentials and the regression analysis also showed that the methane emissions significantly (p ≤ 0.05) varied with the abundance of methane-cycling microbes. These findings imply that abundance rather than diversity and composition of a methane-cycling microbial community is the major contributor to the variations in methane emissions between vegetation types in the Zoige wetland.

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Nitrapyrin addition mitigates nitrous oxide emissions and raises nitrogen use efficiency in plastic-film-mulched drip-fertigated cotton field

Cited by 15 publications

References 40 publications

Agronomic evaluation of polymer-coated urea and urease and nitrification inhibitors for cotton production under drip-fertigation in a dry climate

Agronomic evaluation of polymer-coated urea and urease and nitrification inhibitors for cotton production under drip-fertigation in a dry climate

Urea Nitrapyrin Placement Effects on Soil Nitrous Oxide Emissions in Claypan Soil

Abundance, rather than composition, of methane‐cycling microbes mainly affects methane emissions from different vegetation soils in the Zoige alpine wetland

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