Nitrogen Accumulation Characteristics of High-Yield Spring Maize in Northeast China

Geng, Yuehua; Guojun, Cao; Wang, Shuhua

doi:10.1007/s42106-018-0015-1

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Maize yield was determined by kernel number per unit area and thousand-kernel weight; the kernel number per unit area was considered the primary determinant 35 . In the present study, the increased yields in N2D3 treatments were mainly attributed to the increased kernel number.…”

Section: Discussionmentioning

confidence: 99%

“…We also found that increased planting density had positive effects on maize yield, with a relative yield increase of 3.8-8.8% recorded on the conventional high N rate. Maize yield was determined by kernel number per unit area and thousand-kernel weight; the kernel number per unit area was considered the primary determinant 35 . In the present study, the increased yields in N2D3 treatments were mainly attributed to the increased kernel number.…”

Section: Discussionmentioning

confidence: 99%

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Increased planting density combined with reduced nitrogen rate to achieve high yield in maize

Zhi

Lei

et al. 2021

Sci Rep

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The combination effects of nitrogen (N) fertilizer and planting density on maize yield, N use efficiency and the characteristics of canopy radiation capture and radiation use efficiency are not well documented in the Huanghuaihai Plain region in China. A 2-year field experiment was conducted from 2017 to 2018 in a split plot design with two N levels (240 and 204 kg N ha−1) applied to main plots and three plant densities (67,500, 77,625 and 87,750 plants ha−1) allocated to sub plots. Our results show that a 30% greater plant density combined with a 15% lower N rate (basal N) enhanced N partial factor productivity (NPFP) by 24.7% and maize grain yield by 6.6% compared with those of the conventional high N rate combined with a low density planting management practice. The yield increase was mainly attributed to significantly increased kernel numbers and biomass. The increased intercepted photosynthetically active radiation (IPAR) was the primary factor responsible for the high productivity of maize at increased planting density under reduced N conditions. The results indicate that increase planting density with reduced basal N application might benefit maize cropping for achieving high yields and sustainable development of agriculture.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Increased planting density combined with reduced nitrogen rate to achieve high yield in maize

Zhi

Lei

et al. 2021

Sci Rep

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“…The GLI was reported to be strongly correlated to leaf chlorophyll concentration (Saberioon et al, 2014). However, the N uptake in maize plant before the V6 stage was relatively low (<15%, Geng et al, 2018) which led to undetectable variations in leaf chlorophyll concentration (Hunt et al, 2005) and thus no significant difference in GLI of this study between treatments by T2 (Figure 3C). The relationship between VIs and canopy status was found to be strongly influenced by the phenological stage of maize plants (Burkart et al, 2018).…”

Section: Vegetation Indices As Indicators For Crop Stress and Growthmentioning

confidence: 61%

“…TABLE 3 The terms of the mineral N balance (mean ± standard deviation, kg ha −1 , n = 4) at sampling moments T1 (8 May 2020), T2 (9 July 2020), T3 (18 August 2020) and T4 (22 September 2020) and the nitrogen use efficiency (NUE, mean ± standard deviation, n = 4) at T4. Crop N uptake at V6 stage (T2) was assumed to be 15% (Geng et al, 2018) of the total N taken up by by maize plants (on dry weight basis) at harvest (T4). Letters refer to the statistical difference between treatments using one-way ANOVA and Fisher's Least Significant Difference (LSD) post-hoc pairwise comparisons at a 5% level.…”

Section: Potential Benefit Of Liquid Biobased Fertilizers During An E...mentioning

confidence: 99%

Benefits of biobased fertilizers as substitutes for synthetic nitrogen fertilizers: Field assessment combining minirhizotron and UAV-based spectrum sensing technologies

Luo

Dewitte

Landschoot

et al. 2022

Front. Environ. Sci.

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Recovery of biobased fertilizers derived from manure to replace synthetic fertilizers is considered a key strategy to close the nutrients loop for a more sustainable agricultural system. This study evaluated the nitrogen (N) fertilizer value of five biobased fertilizers [i.e., raw pig manure (PM), digestate (DIG), the liquid fraction of digestate (LFD), evaporator concentrate (EVA) and ammonia water (AW)] recovered from an integrated anaerobic digestion–centrifugation–evaporation process. The shoot and root growth of maize (Zea mays L.) under biobased fertilization was compared with the application of synthetic mineral N fertilizer, i.e., calcium ammonium nitrate (CAN). The non-invasive technologies, i.e., minirhizotron and unmanned aerial vehicle (UAV) based spectrum sensing, were integrated with the classic plant and soil sampling to enhance the in-season monitoring of the crop and soil status. Results showed no significant difference in the canopy status, biomass yield or crop N uptake under biobased fertilization as compared to CAN, except a lower crop N uptake in DIG treatment. The total root length detected by minirhizotron revealed a higher early-stage N availability at the rooting zone under biobased fertilization as compared to CAN, probably due to the liquid form of N supplied by biobased fertilizers showing higher mobility in soil under dry conditions than the solid form of CAN. Given a high soil N supply (averagely 70–232 kg ha−1) in the latter growing season of this study, the higher N availability in the early growing season seemed to promote a luxury N uptake in maize plants, resulting in significantly (p < 0.05) higher N concentrations in the harvested biomass of PM, LFD and AW than that in the no-N fertilized control. Therefore, the biobased fertilizers, i.e., PM, LFD, EVA and AW have a high potential as substitutes for synthetic mineral N fertilizers, with additional value in providing easier accessible N for crops during dry seasons, especially under global warming which is supposed to cause more frequent drought all over the world.

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Silicon accumulation, partitioning and remobilization in spring maize (Zea mays L.) under silicon supply with straw return in Northeast China

Stephano

Geng

Guojun

et al. 2020

Journal of Plant Nutrition

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Nitrogen Accumulation Characteristics of High-Yield Spring Maize in Northeast China

Cited by 3 publications

References 27 publications

Increased planting density combined with reduced nitrogen rate to achieve high yield in maize

Increased planting density combined with reduced nitrogen rate to achieve high yield in maize

Benefits of biobased fertilizers as substitutes for synthetic nitrogen fertilizers: Field assessment combining minirhizotron and UAV-based spectrum sensing technologies

Silicon accumulation, partitioning and remobilization in spring maize (Zea mays L.) under silicon supply with straw return in Northeast China

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