Effects of reducing and postponing controlled-release urea application on soil nitrogen regulation and maize grain yield

Ji, Pengtao; Peng, Yujuan; Cui, Yongwei; Li, Xiangling; Pei-jun, Tao; Zhang, Yuechen

doi:10.25165/j.ijabe.20221501.6888

Cited by 4 publications

(9 citation statements)

References 35 publications

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“…per ear and 100-grain weight, as it has been shown in previous stud-ies [4,19,38,42]. In this study, grain yield first increases and then decreases with an increase in the proportion of controlled-release nitrogen fertilization; this was likely because the increases in biomass accumulation and pre-anthesis dry matter remobilization were not accompanied by an increase in the proportion of controlled-release nitrogen fertilizer application, When the proportion of controlled-release nitrogen fertilizer application exceeds 70%, the accumulation of biomass showed a downward trend, which is in agreement with results from a previous study [41].…”

Section: Effect Of Controlled-release N Fertilization On Nitrogen Use...supporting

confidence: 91%

“…Soil enzyme activities were greatly increased under N fertilization, mainly because fertilizer application regulated the activities of enzymes involved in nutrient turnover's utilization of substrate [39,40]. At the silking stage, controlled-release nitrogen fertilization increased the associated enzymes involved in soil nitrogen utilization, such as soil urease, nitrate reductase, and nitrite reductase, to variable degrees, consistent with a previous study [41]. It is very important to improve the soil nitrogen supply and promote the nitrogen uptake of maize.…”

Section: Effect Of Controlled-release N Fertilization On Nitrogen Use...supporting

confidence: 89%

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Enhancing Maize Yield and Resource Efficiency through Controlled-Release Nitrogen Fertilization on the Semiarid Loess Plateau

Zhang,

Zhao,

Dang

et al. 2023

Agronomy

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Drought stress is one of the premier limitations to global agricultural production. Increasing water and nitrogen (N) use efficiencies in dryland agroecosystems to maintain high agricultural output are key responsibilities to assure food security, especially on the semiarid Loess Plateau region of China, as it is one of the important grain production areas in China. The impact of controlled-release urea (CRU) on the soil water content, soil enzyme activities, soil N content, biomass accumulation, grain yield, water use efficiency (WUE), and agronomic use efficiency of N fertilizer (AEN) were examined on the maize production of the rainfed Loess Plateau during 2020–2021. Two-growing-season field treatments at the Zhengyuan Agri-ecological Station, Qingyang, Gansu, including six N treatments, were investigated for maize: a control without N fertilization (CK) and five application proportions of CRU (i.e., 0, 30, 50, 70, and 100%CRU) under a N rate of 225 kg ha−1. Results showed that compared with common urea (0%CRU), on average, CRU applications significantly increased soil enzyme activity related to N conversion and improved biomass accumulation by 4–11% at the silking stage and by 2–12% at the maturity stage, respectively. As the proportion of CRU increased, the grain no. per ear, 100-grain weight, and harvest index first increased and then decreased. Grain yield was increased by 5.3, 11.4, 20.1, and 5.7% under 30, 50, 70 and 100%CRU, respectively, compared to common urea. Compared to common urea, 70%CRU combined with 30% common urea achieved the highest yield. These results indicate that optimal controlled-release N fertilization increases the yield and water and nitrogen use efficiencies of maize, and 70%CRU combined with 30% common urea under a single application of nitrogen fertilizer at sowing was the optimal application proportion of controlled-release urea for increasing water and nitrogen use efficiencies in dryland agroecosystems. The results of this study can provide a theoretical basis for the efficient fertilization of maize on the semiarid Loess Plateau of China.

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Section: Effect Of Controlled-release N Fertilization On Nitrogen Use...supporting

confidence: 91%

Section: Effect Of Controlled-release N Fertilization On Nitrogen Use...supporting

confidence: 89%

Enhancing Maize Yield and Resource Efficiency through Controlled-Release Nitrogen Fertilization on the Semiarid Loess Plateau

Zhang,

Zhao,

Dang

et al. 2023

Agronomy

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“…A large number of studies has shown that slow release or controlled release fertilizers, coated fertilizers and fertilizer synergists can significantly improve FUE. [40][41][42][43][44]. The methods of increasing the depth of fertilization have also been proved to be effective [45,46].…”

Section: Discussionmentioning

confidence: 99%

N Utilization, Residual and Loss Characteristics of Spring-Topdressing (15N-urea) Pear Orchards in the Old Course of the Yellow River Area

Zhao

Jia

et al. 2022

Agronomy

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In the old course of the Yellow River area, most orchards are over-applied with nitrogen (N) fertilizers. To improve N management in this area, a 15N tracing experiment was conducted to investigate the absorption, distribution and loss of spring-topdressing urea in pear orchards from March to August 2019. The 7-year-old Sucui 1 pear was used as the test material, and 277.5 g of ordinary urea and 15 g of 15N-urea N were evenly applied to each plant. The N absorption, distribution and utilization efficiency of different organs from the flowering stage to the post-harvest stage were analyzed, and the residual and loss of N in the soil were also discussed. The N fertilizer utilization rate increased with the advancement of the phenological period. The N fertilizer utilization rate in the full bloom period is 10.39%, which is the fastest growing period, and reached a maximum of 23.62% in the post-harvest stage. In the young fruit stage, the amount of N derived from labeled fertilizer (%Ndff) of the fruit was only 1.02%, and most of the new vegetative organs were above 1%. Residual amount in the 20–40 cm soil layer was significantly higher than that in other soil layers. Direction of N fertilizer is N fertilizer loss>soil residue>tree absorption. N loss in the fruit expansion stage and the harvest stage is higher, which are 3.76 g and 3.74 g, respectively. N utilization rate in this area is low throughout the year. There is nutrient competition between reproductive growth and vegetative growth, which can be effectively alleviated by spring top-dressing. The N loss during fruit expansion and harvesting is serious. Attention should be paid to split fertilizer application and the timely supplementation of an appropriate amount of N fertilizer to improve N use efficiency.

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“…Moreover, the activities of microbial biomass carbon and nitrogen in soil are signi cantly in uenced by urease activity and the amount of nitrogen fertilizer applied. Controlled-release nitrogen fertilizer enhances the activities of soil urease, protease, and nitrate reductase during the middle and late stages of crop growth [42][43] . Additionally, hydroxylamine reductase facilitates the conversion of soil hydroxylamine to nitrite, with its activity being augmented by nitrogen application [44] .…”

Section: The Impact Of Fertilization On Soil Properties and Crop Yieldmentioning

confidence: 99%

The application of slow-release nitrogen fertilizer affected maize yield by regulating soil microbial diversity

Meng,

Shi,

Zhang

et al. 2024

Preprint

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In agro-pastoral interleaved zones, determining the appropriate rate of slow-release nitrogen fertilizer application is crucial in understanding the interplay in soil microbial community structure, network complexity, crop yield, as well as regional ecological security. Building upon a positioning experiment conducted previously, this study investigates six different gradients (N0, N8, N12, N16, N20 and N24) of nitrogen fertilizers, The results revealed that ALPT, NO3−-N and pH were the primary factors influencing the composition of bacterial communities.MBC, ALPT, and HR played a significant role in shaping fungal community composition. Proteobacteria, Acidobacteriota, and Myxomycota were identified as the dominant bacterial phyla affecting yield, while Basidiomycota and Glomeromycota were the key fungal phyla involved. Application of slow-release nitrogen fertilizer led to an increase in Actinobacteria and Bacteroidota abundance in both rhizosphere soil and non-rhizosphere soil. Ascomycota and Basidiomycota relative abundances exhibited spatial variations. Nitrogen improved soil physical and chemical properties ss and regulated microbial community composition, which effectively enhanced maize yield. Nitrogen fertilizer reduced bacterial network complexity but enhanced fungal network complexity and stability. It not only simplified the bacterial network but also enhanced the abundance of beneficial bacteria. This led to increased microbial activity, resulting in enhanced crop yields.

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Effects of reducing and postponing controlled-release urea application on soil nitrogen regulation and maize grain yield

Cited by 4 publications

References 35 publications

Enhancing Maize Yield and Resource Efficiency through Controlled-Release Nitrogen Fertilization on the Semiarid Loess Plateau

Enhancing Maize Yield and Resource Efficiency through Controlled-Release Nitrogen Fertilization on the Semiarid Loess Plateau

N Utilization, Residual and Loss Characteristics of Spring-Topdressing (15N-urea) Pear Orchards in the Old Course of the Yellow River Area

The application of slow-release nitrogen fertilizer affected maize yield by regulating soil microbial diversity

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