Influence of Nitrogen Fertilization on Wheat, and Soil Carbon, Nitrogen and Phosphorus Stoichiometry Characteristics

Zhong, Yangquanwei; Yan, Weiming; Xu, Xuanbin; Shangguan, Zhouping

doi:10.17957/ijab/15.0042

Cited by 5 publications

(4 citation statements)

References 36 publications

(55 reference statements)

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“…The paper reports for the first time the element stoichiometry and temporal trajectories of the concentrations of 11 nutrient elements across the whole life cycle of a plant. We found considerable variation in element concentrations and stoichiometry between years (differing in environmental conditions) and crop developmental stages, similar results were also reported elsewhere and for various plants 4 5 8 9 10 . In contrast to most other studies of element stoichiometry in plants, we included several nutrient elements beyond N. Further, we considered the entire plant life history “from seed to seed”.…”

Section: Discussionsupporting

confidence: 90%

“…Apart from the developmental stage and weather, the nutrient concentration pattern in plants is influenced also by the nutrient bioavailability in the soil 1 10 . However, the nutrient concentrations in plants often reflect nutrient uptake conditions more than nutrient availabilities in the soil, and the relationships between the concentrations of individual nutrient elements in the plant and soil are not linear 1 .…”

Section: Discussionmentioning

confidence: 99%

“…The whole life cycle of the crop, i.e., “from seed to seed” is rarely investigated. Nutrient requirements, nutrient uptake rates and element stoichiometry vary across the life cycle of plants including agricultural crops 4 7 8 9 10 . Element stoichiometry in plants is affected partly by soil element availability in combination with uptake capacity of the plant independent of its growth rate, and partly by the element uptake of the plant largely driven by its growth rate 1 11 .…”

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confidence: 99%

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Nutrient stoichiometry in winter wheat: Element concentration pattern reflects developmental stage and weather

Weih

Pourazari

Vico

2016

Sci Rep

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At least 16 nutrient elements are required by plants for growth and survival, but the factors affecting element concentration and their temporal evolution are poorly understood. The objective was to investigate i) element concentration pattern in winter wheat as affected by crop developmental stage and weather, and ii) whether, in the short term, element stoichiometry reflects the type of preceding crop. We assessed the temporal trajectories of element concentration pattern (N, P, K, Ca, Mg, S, Mn, Fe, Cu, Na, Zn) across the life cycle (from seed to seed) of winter wheat field-grown in cool-temperate Sweden during two years with contrasting weather and when cultivated in monoculture or after different non-wheat preceding crops. We found strong influence of developmental stage on concentration pattern, with the greatest deviation from grain concentrations found in plants at the start of stem elongation in spring. Inter-annual differences in weather affected stoichiometry, but no evidence was found for a short-term preceding–crop effect on element stoichiometry. Winter wheat element stoichiometry is similar in actively growing plant tissues and seeds. Nitrogen exerts a strong influence on the concentration pattern for all elements. Three groups of elements with concentrations changing in concert were identified.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Nutrient stoichiometry in winter wheat: Element concentration pattern reflects developmental stage and weather

Weih

Pourazari

Vico

2016

Sci Rep

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“…For example, Ye et al (2014) reported that rice (Oryza sativa L.) showed allometric increase of stem-leaf [N] and P concentration [P] in response to N fertilization, resulting in an increased N:P ratio. In contrast, N fertilization increased [N] and N:P ratio but reduced [P] in wheat (Triticum aestivum L.) leaves (Zhong et al 2015). These inconsistent patterns of elemental concentrations suggest that different mechanisms may modulate the responses of leaf stoichiometry to N inputs in plants.…”

Section: Introductionmentioning

confidence: 99%

Divergent responses of leaf N:P:K stoichiometry to nitrogen fertilization in rice and weeds

Sun

Guo

et al. 2019

Weed Sci

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Nitrogen (N) inputs have been found to exert strong influence on leaf stoichiometry in natural ecosystems, but there are few studies investigating the effects of N in agroecosystems. Using a 5-yr fertilization experiment in rice fields, we examined the effects of N inputs on leaf stoichiometry of one crop, rice (Oryza sativa L.), and its four common weeds, barnyardgrass [Echinochloa crus-galli (L.) P. Beauv.], Monochoria korsakowii Regel and Mack, alligatorweed [Alternanthera philoxeroides (Mart.) Griseb.], and Japanese mazus [Mazus pumilus (Burm. f.) Steenis], and further evaluated whether and how straw return mediates these effects. We found that rice and weed leaf nitrogen:phosphorus:potassium (N:P:K) stoichiometry exhibited divergent responses to N fertilizer. Weed leaf N:P:K stoichiometry was not sensitive to low (120 kg N ha−1) and regular (240 kg N ha−1) N inputs, but rice plants were, with significantly increased leaf N concentration and N:P and N:K ratios. The opposite trend was found for high N inputs (360 kg N ha−1). Rice leaf N concentration [N] did not increase further, and N:P ratios even decreased, whereas E. crus-galli and M. korsakowii had significantly increased [N] and N-related stoichiometry. We also found that the positive effects of regular N inputs on rice leaf N:P and N:K ratios were significantly dampened by straw return, but the positive effects on N:P ratios in M. pumilus leaves were enhanced by straw return. Compared with weeds, rice leaves contained low elemental concentrations across fertilization levels at grain-filling stages. These results indicate that rice has a lower N requirement than weeds at grain-filling stages, and the N supply should be managed at a relative low level to reduce the nutrient acquisition and competitive abilities of weeds. From a stoichiometric perspective, this study highlights the importance of N management in combination with straw return in controlling weeds and increasing the nutrient-use efficiency of crops.

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Microbial community assembly and metabolic function during wheat straw decomposition under different nitrogen fertilization treatments

et al. 2020

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Influence of Nitrogen Fertilization on Wheat, and Soil Carbon, Nitrogen and Phosphorus Stoichiometry Characteristics

Cited by 5 publications

References 36 publications

Nutrient stoichiometry in winter wheat: Element concentration pattern reflects developmental stage and weather

Nutrient stoichiometry in winter wheat: Element concentration pattern reflects developmental stage and weather

Divergent responses of leaf N:P:K stoichiometry to nitrogen fertilization in rice and weeds

Microbial community assembly and metabolic function during wheat straw decomposition under different nitrogen fertilization treatments

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