Details
| Original language | English |
|---|---|
| Pages (from-to) | 2202-2217 |
| Number of pages | 16 |
| Journal | Archives of Agronomy and Soil Science |
| Volume | 69 |
| Issue number | 11 |
| Early online date | 3 Nov 2022 |
| Publication status | Published - 2023 |
Abstract
Splitting nitrogen (N) application is beneficial for achieving higher grain yields and N use efficiency (NUE), but the responses of N utilization efficiency of different maize cultivars to top-dressing N fertilizer rates are still unclear. This study investigated the effects of fertilization managements on N uptake and utilization derived from topdressing fertilizers of maize hybrids (Ludan981 and Denghai605) with contrasting NUEs. The N fate derived from topdressing fertilizer was determined using the 15N tracing method. Grain yields, dry matter and N accumulation of both maize hybrids were significantly increased under low N levels but decreased under high N levels. Under N-deficient and excess conditions, Denghai605 had higher NUE than Ludan981. The N rates of topdressing significantly affected N uptake and utilization, but no difference was detected between two maize hybrids, and excessive N use led to higher rates of N loss and residual in soil. The N metabolism enzyme activities did not differ between the two maize hybrids. Our findings suggest optimized N management strategies by adjusting topdressing N application rate and timing are necessary to increase NUE and to minimize environmental costs in maize cropping system.
Keywords
- N recovery, Grain yield, nitrogen fate, nitrogen metabolism, topdressing
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Soil Science
Sustainable Development Goals
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In: Archives of Agronomy and Soil Science, Vol. 69, No. 11, 2023, p. 2202-2217.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Nitrogen uptake and utilization of two maize hybrids with contrasting nitrogen use efficiencies depending on fertilization amount
AU - Shao, Guodong
AU - Cheng, Hao
AU - Dai, Hongcui
AU - Zhang, Hui
AU - Ai, Juanjuan
AU - Liu, Kaichang
AU - Li, Zongxin
AU - Zamanian, Kazem
AU - Qian, Xin
N1 - Funding Information: This research was supported the Modern Agricultural Technology System Innovation Team Project of Shandong Province, China [SDAIT-02-07]; the Natural Science Foundation of Shandong Province, China [ZR2021QC121]; the Young Talent of Lifting engineering for Science and Technology in Shandong, China [SDAST2021qt04]; and the Research Fund for International Young Scientists of National Natural Science Foundation of China [42050410320].
PY - 2023
Y1 - 2023
N2 - Splitting nitrogen (N) application is beneficial for achieving higher grain yields and N use efficiency (NUE), but the responses of N utilization efficiency of different maize cultivars to top-dressing N fertilizer rates are still unclear. This study investigated the effects of fertilization managements on N uptake and utilization derived from topdressing fertilizers of maize hybrids (Ludan981 and Denghai605) with contrasting NUEs. The N fate derived from topdressing fertilizer was determined using the 15N tracing method. Grain yields, dry matter and N accumulation of both maize hybrids were significantly increased under low N levels but decreased under high N levels. Under N-deficient and excess conditions, Denghai605 had higher NUE than Ludan981. The N rates of topdressing significantly affected N uptake and utilization, but no difference was detected between two maize hybrids, and excessive N use led to higher rates of N loss and residual in soil. The N metabolism enzyme activities did not differ between the two maize hybrids. Our findings suggest optimized N management strategies by adjusting topdressing N application rate and timing are necessary to increase NUE and to minimize environmental costs in maize cropping system.
AB - Splitting nitrogen (N) application is beneficial for achieving higher grain yields and N use efficiency (NUE), but the responses of N utilization efficiency of different maize cultivars to top-dressing N fertilizer rates are still unclear. This study investigated the effects of fertilization managements on N uptake and utilization derived from topdressing fertilizers of maize hybrids (Ludan981 and Denghai605) with contrasting NUEs. The N fate derived from topdressing fertilizer was determined using the 15N tracing method. Grain yields, dry matter and N accumulation of both maize hybrids were significantly increased under low N levels but decreased under high N levels. Under N-deficient and excess conditions, Denghai605 had higher NUE than Ludan981. The N rates of topdressing significantly affected N uptake and utilization, but no difference was detected between two maize hybrids, and excessive N use led to higher rates of N loss and residual in soil. The N metabolism enzyme activities did not differ between the two maize hybrids. Our findings suggest optimized N management strategies by adjusting topdressing N application rate and timing are necessary to increase NUE and to minimize environmental costs in maize cropping system.
KW - N recovery
KW - Grain yield
KW - nitrogen fate
KW - nitrogen metabolism
KW - topdressing
UR - http://www.scopus.com/inward/record.url?scp=85141392052&partnerID=8YFLogxK
U2 - 10.1080/03650340.2022.2142573
DO - 10.1080/03650340.2022.2142573
M3 - Article
AN - SCOPUS:85141392052
VL - 69
SP - 2202
EP - 2217
JO - Archives of Agronomy and Soil Science
JF - Archives of Agronomy and Soil Science
SN - 0365-0340
IS - 11
ER -