Intercropping effects on root distribution of eight novel winter faba bean genotypes mixed with winter wheat

Streit, Juliane; Meinen, Catharina; Rauber, Rolf

doi:10.1016/j.fcr.2019.02.014

Cited by 33 publications

(22 citation statements)

References 43 publications

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“…This is also in line with previous reports, where the root fractions of intercropped wheat and bean increased at deeper soil layers compared to sole-cropped plants (Streit et al 2019). Another example of perennials is the bamboo-teak root interactions shown by Divakara et al (2002).…”

Section: Discussionsupporting

confidence: 93%

“…Maize-soybean strip intercropping; Du et al 2018). In arable crop production, strip intercropping is often implemented using combinations of two or more annual crops such as wheat-pea, maize-cowpea and barley-pea (Hauggaard-Nielsen et al 2001; Li et al 2006; Streit et al 2019). A common rhetoric has been that the crop components with different rooting depth and density do not compete for plant resources at the same soil profile, i.e., where one crop component dominates at shallower depth and the other at deeper depth (Berendse 1982; Hauggaard-Nielsen et al 2001).…”

Section: Introductionmentioning

confidence: 99%

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Exploitation of neighbouring subsoil for nutrient acquisition under annual-perennial strip intercropping systems

Han

Czaban

Dresbøll

et al. 2022

Preprint

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Little is known of how the deep root systems of perennial crops contribute to deeper and better resource use when intercropped with annuals in arable fields. Therefore, we aimed at measuring the capacity of perennial deep roots, alfalfa (Medicago sativa L.) and curly dock (Rumex crispus L.) to access the nutrient source located under the neighboring annuals at 1.0 and 2.5 m of soil depth. Alfalfa and curly dock were able to access the tracer-labelled source placed at a distance under the annual crop strips. As a result, the reliance on deeper soil layer for nutrient uptake under intercroppings became greater compared with sole-croppings. Combination of an annual cereal (winter rye) and a perennial legume (alfalfa) with contrasting root systems exhibited higher resource complementarity compared with intercroppings having similar root systems or absence of legumes. Our results demonstrated that the deep-rooted perennials when intercropped with annuals can induce vertical niche complementarity, especially at deeper soil layers. This was assumed to be due to the vertically stratified root activity between the crop components, however, the magnitude of the effects depended on choice of crop combinations, and on types of tracers. Future studies should include estimates such as relative yield total and land equivalent ratio to quantitatively determine the effects of resource acquisition under annual-perennial intercropping in arable fields.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Exploitation of neighbouring subsoil for nutrient acquisition under annual-perennial strip intercropping systems

Han

Czaban

Dresbøll

et al. 2022

Preprint

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“…The highlighted area represents the nitrogen input level for which transgressive overyielding occurs (i.e., TOI > 1) mass flow and diffusion of soil mineral nitrogen (Chen et al 2020). Also, the validation of such a model would require measurements of horizontal and lateral root distributions of both species (Chen et al 2017;Gao et al 2010;Li et al 2017;Streit et al 2019;, which are laborious to collect. Similarly to the YIELD-SAFE model (Van der Werf et al 2007), M 3 also makes simplifying assumptions that the rooting depth is constant throughout the growing season and that species in the intercrop have the same rooting depth.…”

Section: Discussionmentioning

confidence: 99%

“…However, the current version of the model can therefore not be used to investigate to what extent differences in rooting depth and density affect interspecific competition and under which circumstances these differences can lead to niche complementarity for nutrient uptake. For instance, it has been reported that faba bean has a lower root density than wheat (Streit et al 2019) and maize (Li fert = 1.0 fert = 0.5 fert = 0…”

Section: Discussionmentioning

confidence: 99%

Identification of species traits enhancing yield in wheat-faba bean intercropping: development and sensitivity analysis of a minimalist mixture model

et al. 2020

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Aim Cereal-legume intercropping can result in yield gains compared to monocrops. We aim to identify the combination of crop traits and management practices that confer a yield advantage in strip intercropping. Methods We developed a novel, parameter-sparse process-based crop growth model (Minimalist Mixture Model, M3) that can simulate strip intercrops under well-watered but nitrogen limited growth conditions. It was calibrated and validated for spring wheat (Triticum aestivum) and spring faba bean (Vicia faba) grown as monocrops and intercrops, and used to identify the most suitable trait combinations in these intercrops via sensitivity analyses. Results The land equivalent ratio of intercrops was greater than one over a wide range of nitrogen fertilizer levels, but transgressive overyielding, with total yield in the intercrop greater than that of either sole crop, was only obtained at intermediate nitrogen applications. We ranked the local sensitivities of the individual yields of wheat and faba bean of the whole intercrop under various nitrogen input levels to various crop traits. Conclusions The total intercrop yield can be improved by selecting specific traits related to phenology of both species, as well as light use efficiency of faba bean and, under high nitrogen applications, of wheat. Changes in height-related crop traits affected individual yields of species in intercrops but not the total intercrop yield.

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“…Such yield advantages are typically related to the complementary use of resource niches and tend to be higher under stress (Fargione and Tilmann, 2005;Hector et al, 2002). For example, root length density enhancement (Schröder and Köpke, 2012;Meinen et al, 2019) might contribute to overyielding, or a complex canopy structure might do so via the establishment of more favourable microclimates that potentially reduce soil moisture evaporation (Tsubo and Walker, 2004). Cereal-legume intercrops therefore have the highest potential for overyielding in low input environments.…”

Section: Introductionmentioning

confidence: 99%

What determines a productive winter bean-wheat genotype combination for intercropping in central Germany?

Nelson

Siebrecht-Schöll

Hoffmann

et al. 2021

European Journal of Agronomy

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Little is known about optimising the productivity of intercropping through exploiting differences between genotypes. Our study evaluates the performance of three winter wheat cultivars and eight winter faba bean genotypes (experimental inbred lines) sown as replacement row intercrops with sole cropping comparisons. Detailed agronomic, physiological and soil-based measurements were taken over three consecutive autumn-sown seasons at two sites (a marginal versus a fertile soil) in central Germany. This study aimed to contribute to our understanding of key traits required to achieve highly complementary and well-performing intercrops.Faba bean plus wheat intercrops yielded higher than sole crop equivalents at both sites, but more so at the marginal site (34 % > 12 %). High intercrop yields were associated with high wheat component yields. Such stands included faba bean genotypes that exhibited low leaf area index (LAI) values and low plant height. Tall and large faba beans i.e. with high vegetative biomass led to excessive lodging, both as a sole crop and when intercropped. To some extent, this concealed effects of faba bean genotype trait variation that would have otherwise been visible had lodging not occurred. The expression of these traits was heavily influenced by variation in environmental conditions. At the less fertile site, even tall intercropped faba beans showed relatively lower vegetative biomass, which promoted intercropped wheat and led to superior overyielding values and relative yield total.While site-specific differences are key, German winter faba beans need further genetic improvement to refrain from superfluous biomass growth when water resources are plentiful.

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Intercropping effects on root distribution of eight novel winter faba bean genotypes mixed with winter wheat

Cited by 33 publications

References 43 publications

Exploitation of neighbouring subsoil for nutrient acquisition under annual-perennial strip intercropping systems

Exploitation of neighbouring subsoil for nutrient acquisition under annual-perennial strip intercropping systems

Identification of species traits enhancing yield in wheat-faba bean intercropping: development and sensitivity analysis of a minimalist mixture model

What determines a productive winter bean-wheat genotype combination for intercropping in central Germany?

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