Advantages of nitrogen fertilizer deep placement in greenhouse gas emissions and net ecosystem economic benefits from no-tillage paddy fields

Liu, T.Q.; Li, S.H.; Guo, Lijin; Cao, Cougui; Li, C.F.; Zhai, Zhong-Bing; Zhou, Jianli; Mei, Yuxia; Ke, Huang

doi:10.1016/j.jclepro.2020.121322

Cited by 91 publications

(44 citation statements)

References 52 publications

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“…Conventional agriculture can negatively influence bacterial diversity, community structure and biomass in many ways. Tillage has been widely reported to negatively affect bacterial diversity in croplands [ 10 , 11 , 12 , 13 ]. The same is true for chemical fertilizers that have been shown to reduce soil functional diversity [ 14 ], and lead to community dominance by a few taxa [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Fresh Compost Tea Application Does Not Change Rhizosphere Soil Bacterial Community Structure, and Has No Effects on Soybean Growth or Yield

Bali

Pineault²,

Chagnon

et al. 2021

Plants

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Soil bacteria drive key ecosystem functions, including nutrient mobilization, soil aggregation and crop bioprotection against pathogens. Bacterial diversity is thus considered a key component of soil health. Conventional agriculture reduces bacterial diversity in many ways. Compost tea has been suggested as a bioinoculant that may restore bacterial community diversity and promote crop performance under conventional agriculture. Here, we conducted a field experiment to test this hypothesis in a soybean-maize rotation. Compost tea application had no influence on bacterial diversity or community structure. Plant growth and yield were also unresponsive to compost tea application. Combined, our results suggest that our compost tea bacteria did not thrive in the soil, and that the positive impacts of compost tea applications reported elsewhere may be caused by different microbial groups (e.g., fungi, protists and nematodes) or by abiotic effects on soil (e.g., contribution of nutrients and dissolved organic matter). Further investigations are needed to elucidate the mechanisms through which compost tea influences crop performance.

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Section: Introductionmentioning

confidence: 99%

Fresh Compost Tea Application Does Not Change Rhizosphere Soil Bacterial Community Structure, and Has No Effects on Soybean Growth or Yield

Bali

Pineault²,

Chagnon

et al. 2021

Plants

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“…Agricultural practices and nutrient management strategies have significantly affected the N2O flux and cumulative emissions at different growth stages. In addition, a proper nitrogen fertilization program can provide higher nitrogen availability to the corn roots, resulting in a decrease in the supply of nitrogen substrate (Liu et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Efficient irrigation and fertilization practices are necessary for water-saving agriculture in semiarid regions . However, the influence of farming techniques and fertilization systems on GHG and local ecology is still unclear, depending on local soil conditions and crop types (Liu et al, 2020). In a century, the GWP of N2O is 298 times that of CO2 (IPCC, 2007).…”

Section: Introductionmentioning

confidence: 99%

Finding Optimal Nutrients With Farming Techniques to inﬂuence Maize Productivity, and Mitigate Global Warming Potential Under Water-saving Agriculture in Semi-arid Regions

Xi¹,

Ma²

2021

Preprint

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Background and aims: Effective nutrients management under various farming techniques is critical for improving maize productivity and ensuring the long-term protection of water-saving agriculture under semi-arid regions. However, the impacts have not been well documented in determining the features of soil greenhouse gas intensity (GHGI) emissions and the driving factors of nutrients fertilization is important for optimizing crop-land nutrients management under various farming techniques.Methods: The nutrients with farming techniques strategies were investigated under water-saving agriculture of maize during 2019-20 years, using the following nine treatments: BF: ridges covered with biodegradable film; CF: soil crust ridges; TF: conventional flat planting; 0: N:P at 0:0 kg ha-1, 1: N:P at 120:60 kg ha-1, 2: N:P at 280:140 kg ha-1. Results: Our results showed that the nutrients fertilization with various cultivation strategies had a significant influence on the GHG emissions. The BF2 treatment considerably increase soil water storage, soil respiration rate as a result of decreased ET rate and GHG emissions compared with the other treatments. The BF1 treatment significantly mitigated GWP, CH4, N2O, and CO2 emissions, changes in CH4, N2O, and CO2 cumulative emissions. The GHGI differently responded to nutrients with farming techniques strategies. Under the BF2 improved (25.0%) the average net GWP than that of TF2, but reduced GHGI, due to improved (18.5%) biomass productivity. The BF2 and BF1 farming methods results in greater N2O, CO2 emissions, GWP, and changes in cumulative CH4, N2O, and CO2 emissions, as a result, have an adverse effect on the soil than that of CF and TF treatments. Conclusions: However, obtained the higher area-scaled GWP (42.1%), WUEg (96.7%), WUEb (65.4%), and (41.1%) grain yield under the BF2 which may offset the negative environmental effects linked with climate change. Thus, it is recommended to use the BF2 treatment in water-saving agriculture under semi-arid regions for cleaner and more efficient maize production.

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“…Moreover, the deep placement of N reduced area-scaled CH 4 emission by 25.53% compared to the surface application. When N is placed into the soil, it has been shown to stimulate CH 4 oxidation by soil methanotrophs (Liu et al, 2020) (Fig. S1).…”

Section: Reduction Potentials Of Ch 4 Emission For Different Fertiliz...mentioning

confidence: 99%

Potential methane emission reduction strategies from rice cultivation systems in Bangladesh: A critical synthesis with global meta-data

Saha

Mia

Biswas

et al. 2022

Journal of Environmental Management

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Advantages of nitrogen fertilizer deep placement in greenhouse gas emissions and net ecosystem economic benefits from no-tillage paddy fields

Cited by 91 publications

References 52 publications

Fresh Compost Tea Application Does Not Change Rhizosphere Soil Bacterial Community Structure, and Has No Effects on Soybean Growth or Yield

Fresh Compost Tea Application Does Not Change Rhizosphere Soil Bacterial Community Structure, and Has No Effects on Soybean Growth or Yield

Finding Optimal Nutrients With Farming Techniques to inﬂuence Maize Productivity, and Mitigate Global Warming Potential Under Water-saving Agriculture in Semi-arid Regions

Potential methane emission reduction strategies from rice cultivation systems in Bangladesh: A critical synthesis with global meta-data

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