Straw returning coupled with nitrogen fertilization increases canopy photosynthetic capacity, yield and nitrogen use efficiency in cotton

Wang, Zhi; Zhen, Wang; Ma, Linjie; Lv, Xiaobing; Meng, Yali; Zhou, Zhiguo

doi:10.1016/j.eja.2021.126267

Cited by 42 publications

(23 citation statements)

References 49 publications

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“…Furthermore, the responses of microbial biomass N to N fertilizer and crop residue matched well with the changes of agronomic N use efficiency and N recovery efficiency of cotton, which peaked at 150 kg N ha À1 combined with residue (Wang et al, 2021). Collectively, these results support our hypothesis that the soil N availability would increase at a suitable N level with crop residue returning in response to changes in SON content, component, and mineralization.…”

Section: Maximum N Availability Was Obtained By Residue Return Combin...supporting

confidence: 77%

“…In addition, it might also be because plants grow well in plots receiving 150 kg N ha −1 in the present longer‐term experiment, and it brought most belowground biomass and root secretions, and consequently greatly improving residue decomposition and SON mineralization rate. Furthermore, the responses of microbial biomass N to N fertilizer and crop residue matched well with the changes of agronomic N use efficiency and N recovery efficiency of cotton, which peaked at 150 kg N ha −1 combined with residue (Wang et al, 2021). Collectively, these results support our hypothesis that the soil N availability would increase at a suitable N level with crop residue returning in response to changes in SON content, component, and mineralization.…”

Section: Discussionmentioning

confidence: 80%

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Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

Zhi

Liu

et al. 2022

Land Degrad Dev

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Soil organic nitrogen (SON) and its mineralization are among the most critical factors that affect soil N availability. However, it is unclear how crop residue return and chemical N fertilization affect soil N availability by altering SON and its mineralization. Therefore, we studied the SON pools, SON mineralization, and related soil properties and enzymes activities in the lower reaches of the Yangtze River Valley in China with stand ages of 7‐year N (0, 75, 150, and 300 kg N ha−1) fertilization and 4‐year barley‐cotton residue return. Regardless of residue retention or removal, the contents of total SON and its fractions (ammonium N, amino acid N, amino sugar N, and unidentified N) increased consistently with the increasing of N input, while SON mineralization, microbial biomass N content, urease and protease activities showed a curvilinear response that was highest at N rate of 150 kg N ha−1. Crop residue returning significantly increased SON content under 75 and 150 kg N ha−1, mostly due to the increase of amino acids N. Other variables, such as SON mineralization, microorganism, and enzymes, were also enhanced by residue returning, and the largest increases were observed at 150 kg N ha−1. In addition, our result also show that excessive N input (300 kg N ha−1) would reduce soil N availability by mainly suppressing microbial N processes. We concluded that crop residue combined with appropriate N has a great potential to improve soil N availability by mainly improving amino acid N content and SON mineralization.

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Section: Maximum N Availability Was Obtained By Residue Return Combin...supporting

confidence: 77%

Section: Discussionmentioning

confidence: 80%

Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

Zhi

Liu

et al. 2022

Land Degrad Dev

Self Cite

View full text Add to dashboard Cite

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“…The correlation analysis between rice yield and nitrogen application before and after straw addition showed (Fig. 8) that straw addition could reduce nitrogen application during 2017-2019 in saline-sodic paddy elds, possibly because straw returning could maintain soil nitrogen storage in saline-sodic paddy elds and provide a good soil chemical, physical and biological environment (Wang et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Combined Effects of Straw Return with Nitrogen Fertilizer on Ion Balance, Photosynthetic Characteristics, Leaf Water Status and Rice Yield in Saline-sodic Paddy Fields

Dang¹,

Ran²,

Tian³

et al. 2023

Preprint

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Aims salinisation severely limits crop growth and yield. In recent years, the effect of nitrogen fertilisation and different management practices on the mitigation of saline-sodic stress in crops has been less studied. Therefore, we conducted a three-year field experiment in Jilin Province, China, to investigate the effects of combined straw and nitrogen fertilizer application on the physiological and photosynthetic characteristics of rice in saline-sodic paddy fields. Methods The experiment was designed as a split-zone trial, with straw (S) as the main zone and nitrogen fertilizer (N) as the secondary zone. The amount of straw returned was 0 t ha-1 (B) and 7 t ha-1 (T). Nitrogen treatments of 0, 150, 250 and 350 kg ha-1 were recorded as N0, N1, N2 and N3, and each treatment was repeated three times. Results Straw combined with nitrogen fertilizer can effectively reduce the Na+/K+ value, malondialdehyde content and relative electric leakage of rice leaves in salt-alkali soil, and ensure the integrity of cell membrane. At the same time, the leaf water potential, relative water content and chlorophyll content were increased, which promoted rice photosynthesis and improved rice yield. In addition, it was found that straw combined with nitrogen fertilizer had the greatest positive effect on rice yield at 250kg ha-1. Conclusions Straw combined with nitrogen fertilizer can improve the physiological and photosynthetic characteristics of rice in saline-alkali paddy field and provide a theoretical basis for rice yield increase in this area

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“…N addition increases ammonium and nitrate content in soil and subsequently N content in the leaf and stem. This leads to an increase in leaf area and enhances in the active area of photosynthesis for capturing light energy 1,13 . Sunlit leaves in the canopy account for about 30% of the total leaf area, absorbing approximately 70% of solar radiation energy, and contributing approximately 53% of total canopy photosynthesis 14 .…”

Section: Introductionmentioning

confidence: 99%

“…This leads to an increase in leaf area and enhances in the active area of photosynthesis for capturing light energy. 1,13 Sunlit leaves in the canopy account for about 30% of the total leaf area, absorbing approximately 70% of solar radiation energy, and contributing approximately 53% of total canopy photosynthesis. 14 Controlled release N fertilizer has advantages with respect to maintaining and increasing leaf greenness as a result of providing continuous N supplement, which indirectly increases carbon dioxide assimilation for the remobilization of nonstructural carbohydrates to grain organs.…”

Section: Introductionmentioning

confidence: 99%

Amendment with controlled release urea increases leaf morpho‐physiological traits, grain yield and NUE in a double‐cropping rice system in southern China

Liu

Sun

et al. 2022

J Sci Food Agric

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BACKGROUND Understanding of mechanisms that underpin high‐yielding cropping systems is essential for optimizing management practices. Currently, the contribution of plant traits such as leaf area, chlorophyll content and intercepted photosynthetically active radiation (PARi) to yield and nitrogen use efficiency (NUE) are not fully understood. In addition, the understanding of how canopy traits are affected by nitrogen (N) management practices is unclear. The present study aimed to determine the effect of amendment with controlled release urea (CR), common urea or no urea on NUE and plant eco‐physiological characteristics in a 2‐year field study in a double rice cropping system. RESULTS Regulation of N release through amendment with CR significantly increased grain yield, NUE and leaf morpho‐physiological attributes. CR coupled with common urea (at comparable total N rates) increased leaf area index (LAI), relative chlorophyll content index (CCI) and PARi, leading to higher grain yield and NUE (increased 24.4% and 25.3% in early and late rice, respectively) compared to local farming practice. Structural equation model (SEM) analysis showed that differences in N application, between CR and common urea, directly accounted for differences observed in soil nutrient, PARi and NUE rather than yield components. Additionally, compared to traditional yield determinants, LAI and PARi (between booting and filling stage) are capable of predicting and explaining grain yield by 0.69 and 0.92 of R2 in early and late rice, respectively. CONCLUSION Leaf morpho‐physiological traits are important for developing N management practices to increase NUE and improve food security for paddy agriculture in southern China. © 2022 Society of Chemical Industry.

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Straw returning coupled with nitrogen fertilization increases canopy photosynthetic capacity, yield and nitrogen use efficiency in cotton

Cited by 42 publications

References 49 publications

Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

Combined Effects of Straw Return with Nitrogen Fertilizer on Ion Balance, Photosynthetic Characteristics, Leaf Water Status and Rice Yield in Saline-sodic Paddy Fields

Amendment with controlled release urea increases leaf morpho‐physiological traits, grain yield and NUE in a double‐cropping rice system in southern China

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