Phosphorus fertilization of a grass-legume mixture: Effect on plant growth, nutrients acquisition and symbiotic associations with soil microorganisms

Mendoza, Rodolfo; Bailleres, Matias Andres; García, Ileana; Ruíz, Oscar Adolfo

doi:10.1080/01904167.2015.1087032

Cited by 13 publications

(12 citation statements)

References 31 publications

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“…). Only mycorrhizal colonization was significantly decreased in the presence of P fertilization; this is in line with earlier observations ( Hill et al, ; Mendoza et al, ). Despite pronounced differences for root mass and SRL, total root length in the top 10 cm of the soil was the one trait that did not significantly differ among grass species.…”

Section: Discussionsupporting

confidence: 92%

What root traits determine grass resistance to phosphorus deficiency in production grassland?

Ros

Deyn

Koopmans

et al. 2018

J. Plant Nutr. Soil Sci.

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Grasslands are a major form of agricultural land use worldwide. Current and future declines of phosphorus (P) inputs into production grasslands necessitate a shift towards selecting grass species based on high efficiency under suboptimal, rather than optimal P conditions. It is therefore imperative to identify key root traits that determine P acquisition of grasses in soils with a low P status. In a 9‐month greenhouse experiment, we grew eight common grass species and cultivars on a soil with a low P status and related root morphological traits to their performance under P‐limiting conditions. We applied (P1) or withheld (P0) P fertilization while providing adequate amounts of all other nutrients. Omitting P fertilization greatly reduced yield and nutrient acquisition for the various grass species. Biomass production differed significantly (P < 0.1%) among species and P fertilization treatments, varying from 17.1 to 72.1 g pot−1 in the P0 treatment and from 33.4 to 85.8 g pot−1 in the P1 treatment. Root traits were species‐specific and unresponsive to P fertilization, but overall we observed a trade‐off between root biomass and specific root length. Structural equation modeling identified total root length as key factor with respect to resistance to P deficiency, especially when roots explored the subsoil. Optimizing root length and subsoil exploration could be the key to maintaining high productivity of production grasslands with decreasing P availability. This is relevant for both plant breeding programs and for composing seed mixtures.

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Section: Discussionsupporting

confidence: 92%

What root traits determine grass resistance to phosphorus deficiency in production grassland?

Ros

Deyn

Koopmans

et al. 2018

J. Plant Nutr. Soil Sci.

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“…Furthermore, an effect of P level on the selection effects has been observed in grass-legume intercrops. With limited soil P, the grass Festuca arundinacea comprised 15% of the total P harvested and 13% of the total yield when intercropped with the legume Lotus tenuis , but at greater P availability it was more competitive, with 42% of the total P and 34% of the yield (Mendoza et al 2016 ). In our study, the plants were N fertilized, but it is probable that if this were not the case that the legume would have been more competitive at greater P levels, as measured in ryegrass-white clover intercrops (Høgh-Jensen and Schjoerring 2010 ).…”

Section: Discussionmentioning

confidence: 99%

Inter- and intra-species intercropping of barley cultivars and legume species, as affected by soil phosphorus availability

et al. 2017

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Aims Intercropping can improve plant yields and soil phosphorus (P) use efficiency. This study compares inter-and intra-species intercropping, and determines whether P uptake and shoot biomass accumulation in intercrops are affected by soil P availability. Methods Four barley cultivars (Hordeum vulgare L.) and three legume species (Trifolium subterreneum, Ornithopus sativus and Medicago truncatula) were selected on the basis of their contrasting root exudation and morphological responses to P deficiency. Monocultures and barley-barley and barley-legume intercrops were grown for 6 weeks in a pot trial at very limiting, slightly limiting and excess available soil P. Aboveground biomass and shoot P were measured. Results Barley-legume intercrops had 10-70% greater P accumulation and 0-40% greater biomass than monocultures, with the greatest gains occurring at or below the sub-critical P requirement for barley. No benefit of barley-barley intercropping was observed. The plant combination had no significant effect on biomass and P uptake observed in intercropped treatments.Conclusions Barley-legume intercropping shows promise for sustainable production systems, especially at low soil P. Gains in biomass and P uptake come from inter-rather than intra-species intercropping, indicating that plant diversity resulted in decreased competition between plants for P.

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“…Interestingly, the addition of high quantities of P greatly promoted the N supply from AMF to L. davurica , but greatly decreased the N supply via AMF to B. ischaemum , indicating that the beneficial effects of N acquisition via AMF can vary with changes in soil nutrient conditions. Numerous studies have found that compared with grasses, legumes have a higher demand for P, and that P addition can weaken the ability of grasses to compete with legumes for resources, which has a positive effect on maintaining abundant legumes in grasslands (Bobbink, 1991; Bolan et al., 1987; Mendoza et al., 2016; Zhao et al., 2019). As a legume species, L. davurica requires much higher quantities of N for growth than are required by B. ischaemum .…”

Section: Discussionmentioning

confidence: 99%

“…Increased soil P availability can decrease the positive effects of AMF on plant diversity and productivity (Collins and Foster, 2009). Specifically, the addition of P to nutrient‐deficient soil can weaken the competitive ability of grasses relative to that of legumes for soil nutrient resources (Mendoza et al., 2016). However, the extent to which soil P availability influences interspecific plant interaction and plant N uptake via AMF is unclear.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic understanding of interspecific interaction between a C4 grass and a C3 legume via arbuscular mycorrhizal fungi, as influenced by soil phosphorus availability using a ¹³C and ¹⁵N dual‐labelled organic patch

Liu

et al. 2021

The Plant Journal

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SUMMARY Arbuscular mycorrhizal fungi (AMF) can improve plant nutrient acquisition, either by directly supplying nutrients to plants or by promoting soil organic matter mineralization, thereby affecting interspecific plant relationships in natural communities. We examined the mechanism by which the addition of P affects interspecific interactions between a C4 grass (Bothriochloa ischaemum, a dominant species in natural grasslands) and a C3 legume (Lespedeza davurica, a subordinate species in natural grasslands) via AMF and plant growth, by continuous 13C and 15N labelling, combined with soil enzyme analyses. The results of 15N labelling revealed that P addition affected the shoot uptake of N via AMF by B. ischaemum and L. davurica differently. Specifically, the addition of P significantly increased the shoot uptake of N via AMF by B. ischaemum but significantly decreased that by L. davurica. Interspecific plant interactions via AMF significantly facilitated the plant N uptake via AMF by B. ischaemum but significantly inhibited that by L. davurica under P‐limited soil conditions, whereas the opposite effect was observed in the case of excess P. This was consistent with the impact of interspecific plant interaction via AMF on arbuscular mycorrhizal (AM) benefit for plant growth. Our data indicate that the capability of plant N uptake via AMF is an important mechanism that influences interspecific relationships between C4 grasses and C3 legumes. Moreover, the effect of AMF on the activities of the soil enzymes responsible for N and P mineralization substantially contributed to the consequence of interspecific plant interaction via AMF for plant growth.

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Phosphorus fertilization of a grass-legume mixture: Effect on plant growth, nutrients acquisition and symbiotic associations with soil microorganisms

Cited by 13 publications

References 31 publications

What root traits determine grass resistance to phosphorus deficiency in production grassland?

What root traits determine grass resistance to phosphorus deficiency in production grassland?

Inter- and intra-species intercropping of barley cultivars and legume species, as affected by soil phosphorus availability

Mechanistic understanding of interspecific interaction between a C4 grass and a C3 legume via arbuscular mycorrhizal fungi, as influenced by soil phosphorus availability using a ¹³C and ¹⁵N dual‐labelled organic patch

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Phosphorus fertilization of a grass-legume mixture: Effect on plant growth, nutrients acquisition and symbiotic associations with soil microorganisms

Cited by 13 publications

References 31 publications

What root traits determine grass resistance to phosphorus deficiency in production grassland?

What root traits determine grass resistance to phosphorus deficiency in production grassland?

Inter- and intra-species intercropping of barley cultivars and legume species, as affected by soil phosphorus availability

Mechanistic understanding of interspecific interaction between a C4 grass and a C3 legume via arbuscular mycorrhizal fungi, as influenced by soil phosphorus availability using a 13C and 15N dual‐labelled organic patch

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Mechanistic understanding of interspecific interaction between a C4 grass and a C3 legume via arbuscular mycorrhizal fungi, as influenced by soil phosphorus availability using a ¹³C and ¹⁵N dual‐labelled organic patch