Nutrient Use and Nutrient Use Efficiency of Crops in a High CO2 Atmosphere

Tausz‐Posch, Sabine; Armstrong, Roger; Tausz, Michael

doi:10.1007/978-3-319-10635-9_9

Cited by 10 publications

(14 citation statements)

References 91 publications

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“…() reported an average of 9% decrease in their meta‐analysis for wheat. Averages for multiple species under FACE conditions were of similar magnitude (Ainsworth & Long, ; Tausz‐Posch et al., ). The relative decrease in leaf [N] under e[CO 2 ] was less, albeit still significant, at the vegetative growth stage.…”

Section: Discussionmentioning

confidence: 85%

“…Where biomass and yield stimulation are relatively greater than the decrease in biomass [N], crops will have greater N demands under CO 2 enrichment. This seems to be the case in many, but not all reported analyses (Lam, Han, Lin, Norton, & Chen, ; Lam, Chen et al., ; Tausz‐Posch et al., ; Wang et al., ).…”

Section: Discussionmentioning

confidence: 94%

“…Decreases in [N] in vegetative plant parts, which are well documented under e[CO 2 ] (Stitt & Krapp, ; Tausz‐Posch et al., ), could therefore be directly related to decreases in grain [N], because proportionally less N is available for remobilisation per each g grain yield. At anthesis, leaf [N] in our study averaged 9% lower under e[CO 2 ].…”

Section: Discussionmentioning

confidence: 94%

“…The attenuation effect of the additional N application on leaf [N] at anthesis could represent the mitigation of a short‐term supply deficit, because in dryland agro‐ecosystems (such as the one investigated here) even soils with high‐N status can leave the crop with insufficient mineral N supply during certain stages, because mineralisation rates and crop demand can be temporarily mismatched (Angus, ). This effect does however not explain the full extent of leaf [N] depression under e[CO 2 ], and alternative mechanisms, such as a direct limitation to nitrate assimilation (Bloom, ; Bloom et al., ), decreased N allocation to the photosynthetic machinery due to downward acclimation of photosynthesis or increased leaf area index (leading to denser canopies), or changes in N mass flow related to changes in transpiration, are very likely (for a review, see Tausz‐Posch et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Because photosynthetic N use efficiency (the photosynthetic carbon fixation rate per g leaf N) increases under e[CO 2 ], the critical tissue N concentration, that is the leaf N concentration ([N]) that is necessary for optimum growth, consequently decreases under e[CO 2 ] (Conroy & Hocking, ; Seneweera & Norton, ; Tausz‐Posch, Armstrong, & Tausz, ). Despite lower tissue [N], the greater biomass reported under e[CO 2 ] may contain more N per ground surface area than biomass under ambient [CO 2 ]; hence, N uptake of the crop may be greater (Lam, Chen, Norton, Armstrong, & Mosier, ; Tausz‐Posch et al., ). In natural ecosystems, where N is often limiting, the CO 2 stimulation on growth often decreases over time because available N in the soil becomes depleted, a phenomenon termed “progressive N limitation” (Luo et al., ; Oren et al., ).…”

Section: Introductionmentioning

confidence: 99%

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Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Tausz

Norton

Tausz‐Posch

et al. 2017

J Agronomy Crop Science

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Elevated CO2 stimulates crop yields but leads to lower tissue and grain nitrogen concentrations [N], raising concerns about grain quality in cereals. To test whether N fertiliser application above optimum growth requirements can alleviate the decline in tissue [N], wheat was grown in a Free Air CO2 Enrichment facility in a low‐rainfall cropping system on high soil N. Crops were grown with and without addition of 50–60 kg N/ha in 12 growing environments created by supplemental irrigation and two sowing dates over 3 years. Elevated CO2 increased yield and biomass (on average by 25%) and decreased biomass [N] (3%–9%) and grain [N] (5%). Nitrogen uptake was greater (20%) in crops grown under elevated CO2. Additional N supply had no effect on yield and biomass, confirming high soil N. Small increases in [N] with N addition were insufficient to offset declines in grain [N] under elevated CO2. Instead, N application increased the [N] in straw and decreased N harvest index. The results suggest that conventional addition of N does not mitigate grain [N] depression under elevated CO2, and lend support to hypotheses that link decreases in crop [N] with biochemical limitations rather than N supply.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Tausz

Norton

Tausz‐Posch

et al. 2017

J Agronomy Crop Science

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Timing and water temperature of drip irrigation regulate cotton growth and yield under film mulching in arid areas of Xinjiang

Wang

Guo

et al. 2023

J Sci Food Agric

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BACKGROUND Cotton (Gossypium hirsutum L.) is the fiber crop most widely cultivated globally and one of the most important commercial crops in China, irrigation is closely related to the growth of cotton. A water temperature for irrigation that is too low or too high inhibits cotton growth. Poor irrigation timing results in water and nutrient deficiencies that reduce cotton yield. Therefore, it is necessary to determine the appropriate irrigation timing and water temperature. METHOD We conducted an experiment in an arid region of north‐western China to assess the effects of irrigation timing and water temperature on soil temperature and the photosynthetic characteristics, biomass, total nitrogen (N), and seed cotton yield. Two irrigation times (daytime and nighttime) and four water temperatures (15, 20, 25, and 30 °C) were combined into eight treatments. RESULTS Our results showed that water warming and nighttime irrigation improved the photosynthesis, biomass, N concentration (the proportion of total N weight in the plant biomass, in g kg−1), N content (the mass of total N, in g plant−1), and cotton yield. The optimal water temperature range for photosynthesis was 25.7–28.7 °C. Water warming also boosted the biomass allocation to the stem and increased the N allocation to the stem and leaf. Nighttime irrigation enhanced these phenomena. Water warming also increased the number of bolls per plant but reduced the single boll weight, increasing the seed cotton yield by 5.88–11.46%. At the same water temperature, irrigation during the night increased the number of bolls per plant and the single boll weight, improving the seed cotton yield by 2.95–4.31%. Among them, NI25 (nighttime irrigation with 25 °C water temperature) increased the yield by 14.13–14.90% compared with CK (daytime irrigation with 15 °C water temperature), which offers the best combination for increasing the yield. CONCLUSION Our study clarifies the optimal irrigation timing and water temperature for cotton production under drip irrigation with film mulching, providing valuable information for improving the cotton yield in arid areas with temperate continental climate. © 2023 Society of Chemical Industry.

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Plant Functional Types Differ in Their Long-term Nutrient Response to eCO2 in an Extensive Grassland

et al. 2021

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Increasing atmospheric CO2 enhances plant biomass production and may thereby change nutrient concentrations in plant tissues. The objective of this study was to identify the effect of elevated atmospheric CO2 concentrations on nutrient concentrations of grassland biomass that have been grown for 16 years (1998–2013). The grassland biomass grown at the extensively managed Giessen FACE experiment, fumigated with ambient and elevated CO2 (aCO2; eCO2; +20%) was harvested twice annually. Concentrations of C, N, P, K, Ca, Mg, Mn, Fe, Cu and Zn were determined separately for grasses, forbs and legumes. Under eCO2, the concentration of N was reduced in grasses, Ca was reduced in grasses and forbs, P was reduced in grasses but increased in legumes, Mg concentration was reduced in grasses, forbs and legumes and K was reduced in grasses but increased in forbs. The nutrient yield (in g nutrient yield of an element per m−2) of most elements indicated negative yield responses at a zero biomass response to eCO2 for grasses. K and Zn nutrient yields responded positively to eCO2 in forbs and Mn and Fe responded positively in forbs and legumes. The results suggest that under eCO2 the nutrient concentrations were not diluted by the CO2 fertilization effect. Rather, altered plant nutrient acquisitions via changed physiological mechanisms prevail for increased C assimilation under eCO2. Furthermore, other factors such as water or nutrient availability affected plant nutrient concentrations under eCO2.

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Nutrient Use and Nutrient Use Efficiency of Crops in a High CO2 Atmosphere

Cited by 10 publications

References 91 publications

Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Timing and water temperature of drip irrigation regulate cotton growth and yield under film mulching in arid areas of Xinjiang

Plant Functional Types Differ in Their Long-term Nutrient Response to eCO2 in an Extensive Grassland

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Nutrient Use and Nutrient Use Efficiency of Crops in a High CO2 Atmosphere

Cited by 10 publications

References 91 publications

Can additional N fertiliser ameliorate the elevated CO2‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Can additional N fertiliser ameliorate the elevated CO2‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Timing and water temperature of drip irrigation regulate cotton growth and yield under film mulching in arid areas of Xinjiang

Plant Functional Types Differ in Their Long-term Nutrient Response to eCO2 in an Extensive Grassland

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Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?

Can additional N fertiliser ameliorate the elevated CO₂‐induced depression in grain and tissue N concentrations of wheat on a high soil N background?