Estimation of the impact of precrops and climate variability on soil depth-differentiated spring wheat growth and water, nitrogen and phosphorus uptake

Seidel, Sabine J.; Gaiser, Thomas; Kautz, Timo; Bauke, Sara L.; Amelung, Wulf; Barfus, Klemens; Ewert, Frank; Athmann, Miriam

doi:10.1016/j.still.2019.104427

Cited by 19 publications

(8 citation statements)

References 40 publications

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“…Barej et al ., 2014). A time‐series analysis of the same site (Seidel et al ., 2019) showed only very little variation in plant‐available P over time. Therefore, we did not measure plant‐available P in this study again.…”

Section: Methodsmentioning

confidence: 99%

Tracing uptake and translocation of phosphorus in wheat using oxygen isotopes and mathematical modelling

et al. 2021

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 Understanding P uptake in soil-plant systems requires suitable P tracers. The stable oxygen isotope ratio in phosphate (expressed as δ 18 O P) is an alternative to radioactive labeling, but the degree to which plants preserve the δ 18 O P value of the P source is unclear. We hypothesized that the source signal will be preserved in roots rather than shoots.  In soil and hydroponic experiments with spring wheat (Triticum aestivum L.), we replaced irrigation water by 18 O-labeled water for up to 10 days. We extracted plant inorganic phosphates with trichloroacetic acid (TCA), assessed temporal dynamics of δ 18 O TCA-P values after changing to 18 O-labeled water and combined the results with a mathematical model.  Within one week, full equilibration of δ 18 O TCA-P values with the isotope value of the water in the growth medium occurred in shoots but not in roots. Model results further indicated that root δ 18 O TCA-P values were affected by back-transport of phosphate from shoots to roots, with a greater contribution of source P at higher temperatures when back-transport was reduced. Accepted Article This article is protected by copyright. All rights reserved  Root δ 18 O TCA-P partially preserved the source signal, providing an indicator of P uptake sources. This now needs to be tested extensively for different species, soil and climate conditions to enable application in future ecosystem studies. KEYWORDS hydroponics, isotope model, phosphate, oxygen isotope exchange, plant P uptake, roots water samples. The experimental part was funded within the framework "Soil as a Sustainable Resource for the Bioeconomy-BonaRes" of the German Federal Ministry of Education and Research (BMBF), project BonaRes (Module A): BonaRes Centre for Soil Research, subproject Soil 3 (grant nos. 031B0026A and 031B0026C); the modelling was supported by the Deutsche

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Section: Methodsmentioning

confidence: 99%

Tracing uptake and translocation of phosphorus in wheat using oxygen isotopes and mathematical modelling

et al. 2021

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“…4 ), which increases the risk of low availability of water and nutrients to the plant. However, pre-cropping with soybean, lucerne ( Medicago sativa L.), and chicory ( Cichorium intybus L.) increases the density of large-size vertical biopores in the subsoil making the subsoil layers more accessible for root growth of successive crops ( Köpke et al, 2015 ; Seidel et al, 2019 ). The proportion of root in 40–60 cm soil layer of DW was higher than that of RW.…”

Section: Discussionmentioning

confidence: 99%

Comparison of early season crop types for wheat production and nitrogen use efficiency in the Jianghan Plain in China

Yang

Geng

Zhang

et al. 2021

PeerJ

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The rice-wheat (RW) cropping system is one of the most prevalent double-cropping systems used to farm the Jianghan Plain in China. However, it can lead to low wheat yields and reduced nitrogen use efficiency compared with dryland wheat (DW). We evaluated wheat yield and nitrogen use efficiency for two rotations (summer rice-winter wheat and summer soybean-winter wheat) from 2017 to 2019 and applied the results to improve nitrogen management for planting wheat after rice in the Jianghan Plain. Field experiments were conducted over two years with two nitrogen treatments: traditional nitrogen management (M1: 90 kg N ha−1 was applied at sowing and jointing, respectively ) and optimized nitrogen management (M2: 60 kg N ha−1 was applied at sowing, wintering and jointing, respectively). The highest total wheat production was achieved under M2 for both cropping systems and the two-year average yield was 6,128 kg ha−1 in DW and 6,166 kg ha−1 in RW. The spike number in DW was 15% higher than RW in M1 and 13% higher in M2, but the kernel per spike and 1,000-grain weight was lower than RW. The nitrogen accumulation of DW was 24% higher than RW in M1 and 33% in M2. Compared with RW, DW had higher NO3− content in the soil surface layer (0–20 cm) and a higher root length density (RLD) in the deeper layer (40–60 cm), which may account for the higher N uptake in DW. Our results show that the grain yield of RW was comparable to that of DW by optimum nitrogen management. The rice-wheat cropping system combined with optimum nitrogen management may be of economic and agronomic benefit to the wheatbelt in the Jianghan Plain in China.

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“…However, in a microcosm study using soil columns with or without artificial continuous vertical macropores and varying soil moisture, presence of macropores generally had a positive effect on shoot dry matter and N uptake of wheat, which was especially pronounced under dry conditions (Dresemann et al 2018). Beside, in a simulation approach based on data from field experiments, the impact of different taprooted and fibrous rooted precrops on spring wheat growth, water and nutrient uptake and grain yield under varying weather conditions was investigated (Seidel et al 2019). In their study, spring wheat yield was clearly enhanced after lucerne, while among the nonleguminous precrops, high biopore densities after chicory were favorable in dry years but disadvantageous in years Table 3 Potassium, Mg, P, and N shoot uptakes per column at harvest under a subsoil moisture of 10% water holding capacity (WHC 10% ) on the left and under a subsoil moisture of 30% water holding capacity (WHC 30% ) on the right side and under five different pore densities (0, 1, 2, 3, and 4 pores column −1 ) (n = 4-6).…”

Section: Effect Of Pore Densitymentioning

confidence: 99%

Root and shoot growth of spring wheat (Triticum aestivum L.) are differently affected by increasing subsoil biopore density when grown under different subsoil moisture

et al. 2021

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A column experiment with five different pore densities (0, 1, 2, 3, and 4 pores column−1) and two varying moisture regimes (comparatively dry and comparatively moist regime) in the subsoil part of the columns was established. In each pore, Lumbricus terrestris was introduced for 28 days before sowing wheat plants. After 40 days of plant growth, watering was stopped to induce progressive topsoil drying. Parameters describing the shoot hydration, mineral uptake, and aboveground biomass were quantified. Root biomass and root length densities (RLD) were measured separately for six soil layers. Under dry subsoil conditions, plants grown under increasing biopore density showed an increase of the RLD and an improved shoot hydration but the aboveground biomass was unaffected. Since RLD but not root biomass was enhanced, it is assumed that roots were able to explore a larger volume of soil with the same amount of root biomass. Thereby, subsoil water likely was used more efficiently leading to an improved hydration. Under moist subsoil conditions, plants grown with increasing biopore density revealed enhanced shoot biomasses and nutrient uptake while the belowground biomass was unaffected. The improved nutrient uptake can be ascribed to, first, the higher subsoil water availability favoring mass flow driven nutrient uptake, and second, to direct and indirect effects of earthworms on the availability of soil nutrients. It is concluded that high biopore abundancies have the potential to improve not only the belowground but also the aboveground biomass. This, however, largely depends on subsoil moisture.

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Estimation of the impact of precrops and climate variability on soil depth-differentiated spring wheat growth and water, nitrogen and phosphorus uptake

Cited by 19 publications

References 40 publications

Tracing uptake and translocation of phosphorus in wheat using oxygen isotopes and mathematical modelling

Tracing uptake and translocation of phosphorus in wheat using oxygen isotopes and mathematical modelling

Comparison of early season crop types for wheat production and nitrogen use efficiency in the Jianghan Plain in China

Root and shoot growth of spring wheat (Triticum aestivum L.) are differently affected by increasing subsoil biopore density when grown under different subsoil moisture

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