Winter Green Manure Decreases Subsoil Nitrate Accumulation and Increases N Use Efficiencies of Maize Production in North China Plain

Hu, Zonghui; Zhao, Qiu; Zhang, Xinjian; Ning, Xiaojuan; Liang, Hao; Cao, Weidong

doi:10.3390/plants12020311

Cited by 5 publications

(4 citation statements)

References 67 publications

(76 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite the overall good performance metrics for the modified ELEMeNT-N, it should be noted that several simulation results deviated appreciably from the measured riverine N fluxes (figures 3(b) and (c)). These discrepancies likely result from the lack of data before 1980 that prevented determination of pre-1980 nitrogen accumulation in watershed soils (Yang et al 2020, Hu et al 2023.…”

Section: Model Performancementioning

confidence: 99%

Modification of exploration of long‐term nutrient trajectories for nitrogen (ELEMeNT-N) model to quantify legacy nitrogen dynamics in a typical watershed of eastern China

Jia

Wei

et al. 2023

Environ. Res. Lett.

View full text Add to dashboard Cite

Legacy nitrogen (N) is recognized as a primary cause for the apparent failure of watershed N management strategies to achieve desired water quality goals. The ELEMeNT-N (Exploration of Long‐Term Nutrient Trajectories for Nitrogen) model, a parsimonious and process-based model, has the potential to effectively distinguish biogeochemical and hydrological legacy effects. However, ELEMeNT-N is limited in its ability to address long-term legacy N dynamics as it ignores temporal changes in soil organic N (SON) mineralization rates. This work represents the first use and modification of ELEMeNT-N to quantify legacy effects and capture spatial heterogeneity of legacy N accumulation in China. An exponential function based on mean annual temperature was employed to estimate yearly changes in SON mineralization rate. Based on a 31-year water quality record (1980-2010), the modified model achieved higher efficiency metrics for riverine N flux in the Yongan watershed in eastern China than the original model (Nash-Sutcliff coefficient: 0.87 vs. 0.72 and R2: 0.80 vs. 0.71). The modified ELEMeNT-N results suggested that the riverine N flux mainly originated from the legacy N pool (88.2%). The mean overall N lag time was 11.9 years (95% CIs: 8.3-21.3), of which biogeochemical lag time was 9.7 years (6.3-18.4) and hydrological lag time was 2.2 years (2.0-3.0). Legacy N accumulation showed considerable spatial heterogeneity, with 219-239 kg N ha-1 accumulated in soil and 143-188 kg N ha-1 accumulated in groundwater. The ELEMeNT-N model was an effective tool for addressing legacy N dynamics, and the modified form proposed here enhanced its ability to capture SON mineralization dynamics, thereby providing managers with critical information to optimize watershed N pollution control strategies.

show abstract

Section: Model Performancementioning

confidence: 99%

Modification of exploration of long‐term nutrient trajectories for nitrogen (ELEMeNT-N) model to quantify legacy nitrogen dynamics in a typical watershed of eastern China

Jia

Wei

et al. 2023

Environ. Res. Lett.

View full text Add to dashboard Cite

show abstract

“…Improving nutrient use efficiency-nutrient input harvested as product-is one of the most effective means of increasing crop productivity while decreasing environmental pollution [8]. Numerous studies have reported that improving nutrient utilization efficiency is closely related to agricultural management [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Intercropping leguminous green manure (LGM), such as hairy vetch, is a productive planting system that can make full use of environmental resources and respond to the low nutrient use efficiency of farmland soil in contemporary agricultural production [20]. The positive effect of legumes on crop yield has been confirmed through a large number of field experiments [10,21] and is primarily due to the improvement of N recovery from the LGM. For example, legumes can fix atmospheric N 2 [22].…”

Section: Introductionmentioning

confidence: 99%

Combined Application of Leguminous Green Manure and Straw Determined Grain Yield and Nutrient Use Efficiency in Wheat–Maize–Sunflower Rotations System in Northwest China

Zhao,

Bai,

Han

et al. 2024

Plants

View full text Add to dashboard Cite

Leguminous green manure (LGM) has a reputation for improving crop productivity. However, little is known about the beneficial interactions with straw on crop yield and nutrient (N, P, K) use efficiency. Herein, a 9-year field experiment (from 2015 to 2023) containing three treatments—(1) chemical fertilizer as the control (CK), (2) NPK + straw return (Straw) and (3) NPK + straw return with LGM (Straw + LGM)—was conducted to investigate whether the combined application of LGM and straw can increase productivity and nutrient use efficiency in the wheat–maize–sunflower diversified cropping rotation. The results showed that in the third rotation (2021–2023), Straw + LGM significantly increased wheat yield by 10.2% and maize yield by 19.9% compared to CK. The total equivalent yield under Straw + LGM was the highest (26.09 Mg ha−1), exceeding Straw and CK treatments by 2.7% and 12.3%, respectively. For each 2 Mg ha−1 increase in straw returned to the field, sunflower yield increased by 0.2 Mg ha−1, whereas for each 1 Mg ha−1 increase in LGM yield from the previous crop, sunflower yield increased by 0.45 Mg ha−1. Compared to CK, the co-application of LGM and straw increased the N use efficiency of maize in the first and third rotation cycle by 70.6% and 55.8%, respectively, and the P use efficiency by 147.8% in the third rotation cycle. Moreover, Straw treatment led to an increase of net income from wheat and sunflower by 14.5% and 44.6%, while Straw + LGM increased the net income from maize by 15.8% in the third rotation cycle. Combining leguminous green manure with a diversified cropping rotation has greater potential to improve nutrient use efficiency, crop productivity and net income, which can be recommended as a sustainable agronomic practice in the Hetao District, Northwest China.

show abstract

“…Salazar et al (2021) in an experiment with maize-leguminous rotation system, have shown that the introduction of cover crops contributed to increase the NUE, but without yield gains. Hu et al (2023) have found in a long-term experiment that leguminous and non-leguminous cover crops increased the NUE by maize and also promoted better yields of the main crop.…”

Section: Introductionmentioning

confidence: 99%

Cover crops affects soil nitrogen fractions and maize responsiveness to nitrogen in the Cerrado region

Dantas

View full text Add to dashboard Cite

Cover crops affects soil nitrogen fractions and maize responsiveness to nitrogen in the Cerrado regionNitrogen (N) is the most required nutrient for the major crops and is globally consumed. The soil N dynamic involves losses and transformations, for example, leaching and denitrification, respectively, which makes the N fertilization management more complex and costly. The rational use of N fertilizers is one of the strategies to minimize economic and environmental impacts. The soil potentially mineralizable N estimation, or the readily mineralizable N estimation, can be used in N fertilizer recommendation to account the contribution of the organic N fraction in crop nutrition, adopting a pratical and simple method. Depending on the management, especially in no-tillage systems, which has crop rotation as one of its pillars, the main crop will present a different response to N-fertilizer depending on the previous crop. The study was carried out in a long-term experiment in Cerrado biome with maize as first-crop (rainy season) and leguminous and non-leguminous cover crops as secondcrop (off-season). The evaluations performed were: i) chemical and biochemical indices associated with N mineralization that correlates with maize productions component such as grain yield; (ii) the Illinois Soil Nitrogen Test (ISNT) as a tool to quantify the readily mineralizable N, testing different concentrations of the alcaline extraction, aiming to improve the correlation with maize components production in tropical agroecosystems; (iii) contribution of rotation systems with cover crops on maize yield and the effect in N accumulation in maize compartments (stalk + straw, cob + husk, and grains), N fertilizer recovery and N use efficiency using the 15 N stable isotope technique. The long-term experiment is located in Planaltina-DF in a Typic Haplustox (clayey texture) since 2010, in a randomized block design with subdivided plots, in which the plots are represented by nine cover crops and fallow (control) and subplots are represented by N managements (with or without N topdressing). Soil enzymatic activity and ISNT 0.5 M NaOH were the indices that showed correlation with maize yield. This is an indication that the indices are sensitive to quantify the variation on soil organic N and the maize responsiveness to N, with potential to adopt in N fertilizer recommendation for the crop. There was an increase in maize grain yield in maize-cover crops rotation systems in two seasons (2018/2019 and 2019/2020), but the N accumulation in maize compartments, the 15 N fertilizer recovery and N use efficiency did not differ from the control (fallow). The results shows that the benefits of the introduction of cover crops in rotation with maize are not only related to N cycling and other nutrients, but different ecosystem services that allows an increase in crop yield. The results indicate the potential of adopting indices to estimate readily mineralizable N and the maize response to N fertilization.

show abstract

Winter Green Manure Decreases Subsoil Nitrate Accumulation and Increases N Use Efficiencies of Maize Production in North China Plain

Cited by 5 publications

References 67 publications

Modification of exploration of long‐term nutrient trajectories for nitrogen (ELEMeNT-N) model to quantify legacy nitrogen dynamics in a typical watershed of eastern China

Modification of exploration of long‐term nutrient trajectories for nitrogen (ELEMeNT-N) model to quantify legacy nitrogen dynamics in a typical watershed of eastern China

Combined Application of Leguminous Green Manure and Straw Determined Grain Yield and Nutrient Use Efficiency in Wheat–Maize–Sunflower Rotations System in Northwest China

Cover crops affects soil nitrogen fractions and maize responsiveness to nitrogen in the Cerrado region

Contact Info

Product

Resources

About