No differences in soil structure under winter wheat grown in different crop rotational positions

Arnhold, Jessica; Grunwald, Dennis; Kage, Henning; Koch, Heinz-Josef

doi:10.1139/cjss-2023-0030

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…(2005) suggested a modified soil structure as a reason for an effect of different pre-crops on the root system of the following crop. However, in April, no differences in soil structure in our field trial were found between the crop rotational positions investigated ( Arnhold et al., 2023 ).…”

Section: Discussionmentioning

confidence: 66%

Effect of crop rotational position and nitrogen supply on root development and yield formation of winter wheat

Arnhold,

Grunwald,

Braun-Kiewnick

et al. 2023

Front. Plant Sci.

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The lower yield of wheat grown after wheat (second wheat) compared with the first wheat after a break crop is frequently attributed to fungal disease occurrence, but has also been found without visible disease infection; thus, other factors might be responsible for the lower yield of the second wheat. The aims of this study were to analyze the effects of growing wheat as first and second wheat after oilseed rape, as well as monoculture in a long-term field experiment over three years on (i) aboveground biomass formation, root development and nutrient acquisition during the growing season, (ii) take-all occurrence, and (iii) grain yield and yield components. Subsoil root length density of winter wheat was significantly higher after oilseed rape as pre-crop than after wheat, which was independent of take-all occurrence. Differences in wheat aboveground biomass occurred at early growth stages and were persistent until harvest. Grain yield loss correlated well with take-all disease severity in a wet year but yield differences among crop rotational positions occurred also in a dry year without visible fungal infection. Thus, an effect of the crop rotational position of wheat beyond take-all disease pressure can be assumed. Overall, wheat root length density might be the key to understand wheat biomass formation and grain yield in different crop rotational positions.

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Section: Discussionmentioning

confidence: 66%

Effect of crop rotational position and nitrogen supply on root development and yield formation of winter wheat

Arnhold,

Grunwald,

Braun-Kiewnick

et al. 2023

Front. Plant Sci.

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“…The correlation of seminal root number only after an OSR precrop could be due to the comparatively reduced nutrient pressure when grown after OSR 54 , which has different nutritional demands, favouring plants with increased seminal roots to take quick advantage of the increased nutrients available. Differences in biopores could also explain the link between yield and seminal root number, as seminal roots require easy penetration for more effective use 55 , although a recent study has not shown any difference in soil structure between the two precrops used in this study 56 . As there are differences in the soil characteristics and nutrient conditions between the regions, it stands to reason that these differences, and thus potential root architectural advantages may be heightened or nullified depending on the environment.…”

Section: Discussionmentioning

confidence: 82%

Clear effects on root system architecture of winter wheat cultivars (Triticum aestivum L.) from cultivation environment and practices

Cope,

Berckx,

Lundmark

et al. 2024

Sci Rep

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Roots play a pivotal role in the adaption of a plant to its environment, with different root traits adapting the plant to different stresses. The environment affects the Root System Architecture (RSA), but the genetic factors determine to what extent, and whether stress brought about by extreme environmental conditions is detrimental to a specific crop. This study aimed to identify differences in winter wheat RSA caused by cultivation region and practice, in the form of preceding crop (precrop), and to identify if modern cultivars used in Sweden differ in their reaction to these environments. This was undertaken using high-throughput phenotyping to assess the RSA. Clear differences in the RSA were observed between the Swedish cultivation regions, precrop treatments, and interaction of these conditions with each other and the genetics. Julius showed a large difference between cultivars, with 9.3–17.1% fewer and 12–20% narrower seminal roots. Standardized yield decreased when grown after wheat, 23% less compared to oilseed rape (OSR), and when grown in the Southern region, 14% less than the Central region. Additionally, correlations were shown between the root number, angle, and grain yield, with different root types being correlated depending on the precrop. Cultivars on the Swedish market show differences that can be adapted to the region-precrop combinations. The differences in precrop effect on RSA between regions show global implications and a need for further assessment. Correlations between RSA and yield, based on root-type × precrop, indicate different needs of the RSA depending on the management practices and show the potential for improving crop yield through targeting genotypic and environmental conditions in a holistic manner. Understanding this RSA variance, and the mechanisms of conditional response, will allow targeted cultivar breeding for specific environments, increasing plant health and food security.

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“…These patterns in the root distribution over depth may be attributed to the soil's physical structure from both monoculture and rotational wheat. However, in the study conducted by Arnhold et al (2023a) in Harste over two years, no differences in soil structural parameters (i.e., bulk density, total pore volume, air and field capacity, and aggregate stability) were found for an early sampling in April (BBCH 30) over three soil depths under wheat grown in different crop rotational positions.…”

Section: Microbiome Response To Soil Depthmentioning

confidence: 86%

“…Monoculture is commonly linked to a decline in agricultural productivity and yield performance over time compared with systems that use diversified crop species in rotation (Smith et al, 2023). Arnhold et al (2023a) studied the effects of crop rotational position on wheat biomass in the same field plots in Harste. They found, on average, 54% higher aboveground biomass in wheat following winter oilseed rape compared with wheat monoculture in early plant stage BBCH 30, confirming earlier studies by Sieling et al (2005); Sieling et al (2007).…”

Section: Monoculture Impacts the Abundance Diversity And Composition ...mentioning

confidence: 99%

Soil depths and microhabitats shape soil and root-associated bacterial and archaeal communities more than crop rotation in wheat

Giongo,

Arnhold,

Grunwald

et al. 2024

Front. Microbiomes

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The plethora of microorganisms inhabiting the immediate vicinity of healthy root systems plays a pivotal role in facilitating optimal nutrient and water acquisition by plants. In this study, we investigated the soil microbial communities associated with wheat roots within distinct microhabitats, root-affected soil (RA), rhizosphere (RH), and rhizoplane (RP). These microhabitats were explored at five soil depths, and our investigation focused on wheat cultivated in a monoculture (WM) and wheat crop rotation (WR). Overall, there were significant differences in microbiota composition between WM and WR, although no difference in bacterial diversity was observed. Differentially abundant taxa between WM and WR were observed in all three microhabitats, emphasizing important insights on the localization of commonly associated bacteria to wheat roots. Comparing the microhabitats, RP exhibited the most dissimilar microbial composition between WM and WR. Taxa that were differentially abundant between WM and WR were observed in the three microhabitats. The high relative abundance of taxa belonging to the phylum Proteobacteria in the rhizoplane, such as Devosia, Pseudomonas, Shinella, and Sphingomonas, along with other genera, such as Pedobacter (Bacteroidota), Agromyces and Streptomyces (Actinobacteriota) highlight the recruitment of potentially beneficial bacterial taxa to the vicinity of the roots. Interestingly, these taxa were observed along the entire length of wheat roots, even at depths of up to 120 cm. The presence of specific taxa associated with wheat roots at all soil depths may be beneficial for coping with nutrient and water shortages, particularly under upcoming climate scenarios, where water may be a limiting factor for plant growth. This study provides valuable insights for designing management strategies to promote a diverse and healthy microbial community in wheat cropping systems, considering soil depth and microhabitats as key factors. Although, at this time, we cannot link specific bacterial taxa to yield reductions commonly observed in monocultural fields, we propose that some genera may enhance plant nutrient or water acquisition in rotation compared with monoculture. Advanced technologies, including functional analyses and culturomics, may further enhance our understanding of the ecological roles played by these microbes and their potential applications in sustainable agriculture.

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No differences in soil structure under winter wheat grown in different crop rotational positions

Cited by 4 publications

References 23 publications

Effect of crop rotational position and nitrogen supply on root development and yield formation of winter wheat

Effect of crop rotational position and nitrogen supply on root development and yield formation of winter wheat

Clear effects on root system architecture of winter wheat cultivars (Triticum aestivum L.) from cultivation environment and practices

Soil depths and microhabitats shape soil and root-associated bacterial and archaeal communities more than crop rotation in wheat

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