Corn Yield and Soil Nitrous Oxide Emission under Different Fertilizer and Soil Management: A Three-Year Field Experiment in Middle Tennessee

Deng, Qi; Hui, Dafeng; Wang, Junming; Iwuozo, Stephen; Yu, Chih Li; Jima, Tigist; Reddy, Chandra; Dennis, Sam

doi:10.1371/journal.pone.0125406

Cited by 31 publications

(38 citation statements)

References 46 publications

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“…In recent years, many agricultural management practices, such as no‐tillage, alternative use of N fertilizer sources and application methods (e.g., nitrification inhibitor, chicken manure, and split application), have been proposed as effective ways to enhance crop yield and reduce N 2 O emission [ Adviento‐Borbe et al, ; Ma et al, ; Sainju et al, ; Q. Deng et al, 2015]. However, the impacts of these management practices on N 2 O release form croplands remain controversial [ Venterea et al, ; Uzoma et al, ; Simmonds et al, ].…”

Section: Introductionmentioning

confidence: 99%

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

et al. 2016

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Quantification and prediction of N2O emissions from croplands under different agricultural management practices are vital for sustainable agriculture and climate change mitigation. We simulated N2O emissions under tillage and no‐tillage,and different nitrogen (N) fertilizer types and application methods (i.e., nitrification inhibitor, chicken manure, and split applications) in a cornfield using the DeNitrification‐DeComposition (DNDC) model. The model was parameterized with field experimental data collected in Nashville, Tennessee, under various agricultural management treatments and run for a short term (3 years) and a long term (100 years). Results showed that the DNDC model could adequately simulate N2O emissions as well as soil properties under different agricultural management practices. The modeled emissions of N2O significantly increased by 35% with tillage, and decreased by 24% with the use of nitrification inhibitor, compared with no‐tillage and normal N fertilization. Chicken manure amendment and split applications of N fertilizer had minor impact on N2O emission in a short term, but over a long term (100 years) the treatments significantly altered N2O emission (+35%, −10%, respectively). Sensitivity analysis showed that N2O emission was sensitive to mean annual precipitation, mean annual temperature, soil organic carbon, and the amount of total N fertilizer application. Our model results provide valuable information for determining agricultural best management practice to maintain highly productive corn yield while reducing greenhouse gas emissions.

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Section: Introductionmentioning

confidence: 99%

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

et al. 2016

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“…At the beginning of the experiments (May 4, 2012), both the soil organic carbon and total nitrogen were low with 2.37 and 0.14 g•kg A total of 36 plots (5.5 × 7.0 m) was used in this experiment and 6 fertilizer or soil management were randomly assigned among each of 6 replicates. The experimental design and the agricultural management are described in details in Deng et al (2015) [24]. Briefly, the treatments consisted of tillage and no-till as well as alternative fertilizer sources or methods (e.g.…”

Section: Methodsmentioning

confidence: 99%

“…In order to measure the fluxes of CO 2 and CH 4 , gas samples were collected after rainfall event(s) or fertilizer applications or every two weeks during the growing season over three years using static chambers. The construction of the static chambers and the gas sampling are described in details in Deng et al (2015) [24]. All gas samples were stored in sealed vacuum vials and then they were sent for analysis via overnight mail to the University of California, Davis, California.…”

Section: Methodsmentioning

confidence: 99%

“…However, we found that the temperature sensitivity of soil CO 2 flux varied significantly among the treatments ( Table 2). Moreover, the temperature sensitivity tended to be positively related to corn yield across all treatments ( Table 2; [24]). This further supports our conclusion that improved fertilizer and soil management increased soil CO 2 flux primarily by increasing corn growth.…”

Section: Soil Co 2 Flux Under Different Fertilizer and Soil Managementmentioning

confidence: 97%

“…All treatments received the same equivalent unit of nitrogen (217 kg·N·ha −1 ) but in different forms and application scenarios. Previous work has demonstrated that improved fertilizer and soil management have significantly enhanced corn yield while decreasing soil N 2 O emission [24]. The objectives of this study were: 1) to evaluate the effects of improved fertilizer and soil management on soil CO 2 and CH 4 fluxes; and 2) to relate the change of soil CO 2 and CH 4 fluxes to corn yield or microclimate under different treatments.…”

Section: Introductionmentioning

confidence: 99%

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In-Field Management Practices for Mitigating Soil CO2 and CH4 Fluxes under Corn (Zea mays) Production System in Middle Tennessee

Dennis¹,

Deng²,

Hui³

et al. 2015

AJCC

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The United States continues to be the largest corn producer in the world. How to maximize corn yield and at the same time reduce greenhouse gas emissions, is becoming a challenging effort for growers and researchers. As a result, our understanding of the responses of soil CO 2 and CH 4 fluxes to agricultural practices in cornfields is still limited. We conducted a 3-yr cornfield experiment to study the responses of soil CO 2 S. Dennis et al. 368tivity. Our results indicated that agricultural practices enhancing corn yield may also result in a net increase in carbon emissions from soil, hence reducing the potential of carbon sequestration in croplands.

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Conservation tillage and organic nutrients management improve soil properties, productivity, and economics of a maize‐vegetable pea system in the Eastern Himalayas

Singh

Avasthe

Meena³

et al. 2021

Land Degrad Dev

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Soil quality restoration and sustainable crop production in the rainfed ecosystem of the Indian Himalayas can be achieved through effective conservation tillage and organic management. Hence, a six-year (2013 to 2019) study was conducted to quantify the effect of tillage and organic nutrient management on soil properties, productivity, and profitability of the maize-vegetable pea (Pisum sativum) system.Three tillage practices [conventional (CT), reduced (RT), and no-till (NT)] and four organic nutrients management practices [(ONM)-farmyard manure @ 8 Mg ha À1 farmers practice (ONM 1 ), 100% recommended dose of nitrogen (RDN) through manures (ONM 2 ), 75% RDN through manures + maize/vegetable pea stover in either of the crops (ONM 3 ), and 50% RDN through manures + maize/vegetable pea stover in either of the crops (ONM 4 )] were tested. The results indicated that the NT had higher soil organic carbon (SOC, 16.49 g kg À1 ), available N (354.5 kg ha À1 ), and lesser bulk density (1.31 Mg m À3 ) and penetration resistance (1.85 MPa) in comparison with that of CT at 0-10 cm depth. The system productivity under NT was 9.6% higher than that obtained under CT. The ONM 3 had higher SOC content, plantavailable N, soil microbial biomass carbon (SMBC), and dehydrogenase activity (DHA) than ONM 1 . The integration of RT-ONM 2 enhanced SMBC, DHA, maize, and vegetable pea yield by 27.2%, 35.7%, 38.0%, and 60.3%, respectively, over CT-ONM 1 . Thus, the study suggested that the adoption of effective conservation tillage with adequate organic nutrient management has the potential to advance the soil properties and productivity of maize-vegetable pea system in the Himalayan Region.

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Corn Yield and Soil Nitrous Oxide Emission under Different Fertilizer and Soil Management: A Three-Year Field Experiment in Middle Tennessee

Cited by 31 publications

References 46 publications

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

In-Field Management Practices for Mitigating Soil CO<sub>2</sub> and CH<sub>4</sub> Fluxes under Corn (<i>Zea mays</i>) Production System in Middle Tennessee

Conservation tillage and organic nutrients management improve soil properties, productivity, and economics of a maize‐vegetable pea system in the Eastern Himalayas

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Corn Yield and Soil Nitrous Oxide Emission under Different Fertilizer and Soil Management: A Three-Year Field Experiment in Middle Tennessee

Cited by 31 publications

References 46 publications

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

Assessing the impacts of tillage and fertilization management on nitrous oxide emissions in a cornfield using the DNDC model

In-Field Management Practices for Mitigating Soil CO&lt;sub&gt;2&lt;/sub&gt; and CH&lt;sub&gt;4&lt;/sub&gt; Fluxes under Corn (&lt;i&gt;Zea mays&lt;/i&gt;) Production System in Middle Tennessee

Conservation tillage and organic nutrients management improve soil properties, productivity, and economics of a maize‐vegetable pea system in the Eastern Himalayas

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In-Field Management Practices for Mitigating Soil CO<sub>2</sub> and CH<sub>4</sub> Fluxes under Corn (<i>Zea mays</i>) Production System in Middle Tennessee