Effects of Integrated Agronomic Practices on Nitrogen Efficiency and Soil Nitrate Nitrogen of Summer Maize

Jin, Liu; Cui, Haiyan; Li, Bo; Yang, Jiang-Yan; Dong, Shuting; Zhao, Bin; Liu, Peng; Zhang, Jiwang

doi:10.3724/sp.j.1006.2013.02009

Cited by 5 publications

(3 citation statements)

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“…Previous studies on HD planting paid much attention to the light microenvironment and photosynthesis but mainly measured the changes on average light intensity caused by HD planting while analyzing photosynthetic activity under steady‐state light conditions (Jin et al, 2013; Pignon et al, 2017; Wei et al, 2018; Yao et al, 2015; Zhang et al, 2021). This approach thus neglected to consider that light intensity under HD planting is not only weaker but also more dynamic than under LD planting (Figure 1).…”

Section: Discussionmentioning

confidence: 99%

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

Zheng

et al. 2023

Plant Cell & Environment

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In nature, plants are exposed to a dynamic light environment. Fluctuations in light decreased the photosynthetic light utilization efficiency (PLUE) of leaves, and much more severely in C4 species than in C3 species. However, little is known about the plasticity of PLUE under dynamic light in C4 species. Present study focused on the influence of planting density to the photosynthesis under dynamic light in maize (Zea mays L.), a most important C4 crop. In addition, the molecular mechanism behind photosynthetic adaptation to planting density were also explored by quantitative proteomics analysis. Results revealed that as planting density increases, maize leaves receive less light that fluctuates more. The maize planted at high density (HD) improved the PLUE under dynamic light, especially in the middle and later growth stages. Quantitative proteomics analysis showed that the transfer of nitrogen from Rubisco to RuBP regeneration and C4 pathway related enzymes contributes to the photosynthetic adaptation to lower and more fluctuating light environment in HD maize. This study provides potential ways to further improve the light energy utilization efficiency of maize in HD.

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Section: Discussionmentioning

confidence: 99%

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

Zheng

et al. 2023

Plant Cell & Environment

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“…Increasing the planting density can increase the yield, but increasing the planting density also requires increasing the amount of nitrogen fertilizer to achieve a high yield [30,33]. Jin et al [34] showed that when fertilizer was applied at different times for summer maize, the planting density of 7.5 × 10 4 plants ha −1 was 184.5 kg ha −1 , and the yield reached its highest at 10.91 t ha −1 . The yield did not continue to increase with the continued application of nitrogen fertilizer, but decreased owing to the influence of canopy light transmittance and the net photosynthetic rate.…”

Section: Discussionmentioning

confidence: 99%

Effect of the Rate of Nitrogen Application on Dry Matter Accumulation and Yield Formation of Densely Planted Maize

Zhai

Zhang

et al. 2022

Sustainability

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Planting maize (Zea mays L.) reasonably densely and adding amounts of appropriate nitrogen fertilizer are essential measures to improve the efficiency of maize yield and nitrogen use. In this study, two planting densities of 7.5 × 104 plants ha−1 and 12.0 × 104 plants ha−1 were established with the maize varieties DengHai 618 (DH618) and XianYu 335 (XY335). Simultaneously, 18 levels of nitrogen application were established, including a lack of nitrogen (N0) and increments of 45 kg ha−1 nitrogen up to 765 (N765) kg ha−1. The variables studied included the effects of the rate of nitrogen application on the characteristics of dry matter accumulation and the yield under drip irrigation, and they were integrated into water–fertilizer integration. The results indicated that the yield, harvest index, and dry matter accumulation of maize displayed a trend of increasing and then tending to be flat as the amount of nitrogen applied increased. The use of linear plus platform equation fitting indicated that the change in yield with nitrogen administered had the lowest turning point at N = 279 and N = 319, respectively. The next parameter that was measured was the harvest index. When highly dense maize was grown before silking, the rate of nitrogen applied was more obviously impacted by the accumulation of dry matter. The harvest index contributed 22.9–27.2% of the yield, and the total dry matter accumulation before and after silking contributed more than 70% of the production. Increasing the amount of nitrogen fertilizer is beneficial to prolonging the dry matter accumulation time and increasing the dry matter accumulation rate. The accumulation amount of dry matter was positively correlated with accumulation time and rate, and the correlation between dry matter and accumulation rate was greater. In conclusion, applying the right amount of nitrogen can dramatically increase the harvest index, accumulation of materials, and yield, with dry matter accumulation having the greatest influence on yield. The creation of dry matter is influenced by the time and rate of its accumulation, with its rate serving as the primary controlling factor.

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“…Crop yield is mainly affected by photosynthetic efficiency, which plants adjust by regulating the canopy structure [1]. The angle between the foliar normal and the zenith direction, known as the leaf inclination angle, is one of the main canopy structure parameters affecting light interception and photosynthetic efficiency [2].…”

Section: Introductionmentioning

confidence: 99%

BcBZR1 Regulates Leaf Inclination Angle in Non-Heading Chinese Cabbage (Brassica campestris ssp. chinensis Makino)

Lin,

Li,

et al. 2024

Horticulturae

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Brassinosteroids (BRs) play critical roles in plant growth by promoting cell elongation and division, leading to increased leaf inclination angles. BRASSINAZOLE RESISTANT 1 (BZR1) and BRI1-EMS-SUPPRESSOR 1 (BES1) act as transcription factors in the brassinosteroid signaling pathway and are involved in several physiological activities regulated by BRs. In this study, we identified and cloned BcBZR1 from the heitacai non-heading Chinese cabbage (NHCC) cultivar. The sequence analysis showed that the coding sequence length of BcBZR1 is 996 bp, encoding 331 amino acid residues. Subcellular localization assays showed that BcBZR1 is localized in the nucleus and cytoplasm and that BcBZR1 protein is transported to the nucleus after receiving BR signals. Compared with Col-0, the leaf inclination angle was smaller in BcBZR1-OX. The EBR treatment experiment indicated that BRs regulate the differential expression of paclobutrazol resistance1 (PRE1) and ILI1 binding bHLH1 (IBH1) in the adaxial and abaxial cells of the petiole through BZR1, thus regulating the leaf inclination angle. The bimolecular fluorescence complementation (BiFC) assay indicated that BcBZR1 interacts with C-repeat Binding Factor2 (BcCBF2) and CBF3. Taken together, our findings not only validate the function of BcBZR1 in leaf inclination angle distribution in non-heading Chinese cabbage, but also contribute to the mechanism of leaf inclination angle regulation in this species under cold stress.

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Effects of Integrated Agronomic Practices on Nitrogen Efficiency and Soil Nitrate Nitrogen of Summer Maize

Cited by 5 publications

References 0 publications

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

Effect of the Rate of Nitrogen Application on Dry Matter Accumulation and Yield Formation of Densely Planted Maize

BcBZR1 Regulates Leaf Inclination Angle in Non-Heading Chinese Cabbage (Brassica campestris ssp. chinensis Makino)

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