Modelling the Functional Role of Microorganisms in the Daily Exchanges of Carbon between Atmosphere, Plants and Soil

Ibrahim, Hatem; Hatira, Abdessatar; Pansu, Marc

doi:10.1016/j.proenv.2013.06.011

Cited by 16 publications

(12 citation statements)

References 15 publications

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“…8) are in line with those of Ibrahim et al (2013), which showed a greater root-respiration for wheat than for faba bean in intercropping, with a simultaneous increase in root mortality of faba bean leading to an increase in microbial respiration. In this study, the high root respiration in intercropping (Fig.…”

Section: Discussionsupporting

confidence: 86%

The intercropping cowpea-maize improves soil phosphorus availability and maize yields in an alkaline soil

et al. 2014

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Aim: This study assessed whether growing cowpea can increase phosphorus (P) availability in the rhizosphere and improve the yield of legume-cereal systems. In alkaline Mediterranean soils with P deficiency, it is assumed that legumes increase inorganic P availability.Methods: A field experiment was conducted at the Staoueli experimental station, in Algiers province, Algeria, to compare the growth, grain yield, P availability, and P uptake by plants with sole-cropped cowpea (Vigna unguiculata L. cv. Moh Ouali) and maize (Zea mays L. cv. ILT), intercropped cowpea-maize, and fallow. Results: P availability in the rhizosphere was increased in both sole cropping and intercropping systems compared with fallow. It was highest in intercropping. The increase in P availability was associated with (i) significant pH changes of the rhizosphere of cowpea in sole cropping and intercropping systems, with the rhizosphere acidification significantly higher in intercropping (−0.73 units) than in sole cropping (−0.42 units); (ii) significant increase in the rhizosphere pH of intercropped maize (+0.49 units) compared to fallow; (iii) increased soil respiration (C-CO2 from microbial and root activity) in intercropping compared with sole cropping and fallow; and (iv) higher efficiency in utilization of the rhizobial symbiosis in intercropping than in sole-cropped cowpea. Conclusion With cowpea-maize intercropping, cowpea increased the P uptake, by increasing the P availability by rhizosphere pH changes in an alkaline soil. Overall, this study showed that intercropping cowpea improved the plant biomass and grain yield of maize in this soil

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Section: Discussionsupporting

confidence: 86%

The intercropping cowpea-maize improves soil phosphorus availability and maize yields in an alkaline soil

et al. 2014

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“…However, shoot and root biomasses were significantly lower for chickpea when it was intercropped with durum wheat (Figure 1A,B). Under the same conditions of sampling period (full flowering stage), previous studies have shown that the growth of cereal is facilitated by a legume and that durum wheat and maize biomass is likely to increase when intercropped with faba bean and cowpea, respectively [12,27]. Indeed, the total shoot dry weight (SDW) and grain yield of mixed durum wheat and chickpea were significantly higher in intercrops in the first and following years than in the sole cropping of both chickpea and durum wheat (Figure 2A and Figure 3A).…”

Section: Discussionmentioning

confidence: 99%

Species Interactions Improve Above-Ground Biomass and Land Use Efficiency in Intercropped Wheat and Chickpea under Low Soil Inputs

Latati

Dokukin

Aouiche³

et al. 2019

Agronomy

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Little is known about how the performance of legumes symbiosis affects biomass and nutrient accumulation by intercropped cereals under the field condition. To assess the agricultural services of an intercropping system; durum wheat (Triticum turgidum durum L.cv. VITRON) and chickpea (Cicer arietinum L.cv. FLIP 90/13 C) were cultivated as both intercrops and sole cropping during two growing seasons under the field trial, to compare plant biomass, nodulation, N and phosphorus (P) uptake, and N nutrition index. Both the above-ground biomass and grain yield and consequently, the amount of N taken up by intercropped durum wheat increased significantly (44%, 48%, and 30%, respectively) compared with sole cropping during the two seasons. However, intercropping decreased P uptake by both durum wheat and chickpea. The efficiency in use of rhizobial symbiosis (EURS) for intercropped chickpea was significantly higher than for chickpea grown as sole cropping. The intercropped chickpea considerably increased N (49%) and P (75%) availability in durum wheat rhizosphere. In the case of chickpea shoot, the N nutrition (defined by the ratio between actual and critical N uptake by crop) and acquisition were higher in intercropping during only the first year of cropping. Moreover, biomass, grin yield, and resource (N and P) use efficiency were significantly improved, as indicated by higher land equivalent ratio (LER > 1) in intercropping over sole cropping treatments. Our findings suggest that change in the intercropped chickpea rhizosphere-induced parameters facilitated P and N uptake, above-ground biomass, grain yield, and land use efficiency for wheat crop.

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“…In addition, carbon allocation (quantitatively and qualitatively) to roots and rhizodeposition are presumably important plant-related factors that may plausibly control above- and below-ground plant biomass. Those factors may modify rhizosphere traits and shape the rhizosphere microbial community ( Hernández et al, 2015 ) that may include non-symbiotic NF bacteria, particularly via the development of robust rooting system and associated rhizosphere-induced changes including plant–microbe mutualism efficiency, BNF ( Schulze and Drevon, 2005 ; Latati et al, 2014 , 2016 ; Bargaz et al, 2017 ), soil respiration ( Ibrahim et al, 2013 ; Latati et al, 2014 ), rhizosphere acidification, and P availability ( Betencourt et al, 2012 ; Latati et al, 2016 ).…”

Section: Synergistic Use Of Mineral P and N 2 – Fimentioning

confidence: 99%

Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System

et al. 2018

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Tomorrow’s agriculture, challenged by increasing global demand for food, scarcity of arable lands, and resources alongside multiple environment pressures, needs to be managed smartly through sustainable and eco-efficient approaches. Modern agriculture has to be more productive, sustainable, and environmentally friendly. While macronutrients such as nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) supplied by mineral fertilizers are vital to crop production, agriculturally beneficial microorganisms may also contribute directly (i.e., biological N2 fixation, P solubilization, and phytohormone production, etc.) or indirectly (i.e., antimicrobial compounds biosynthesis and elicitation of induced systemic resistance, etc.) to crop improvement and fertilizers efficiency. Microbial-based bioformulations that increase plant performance are greatly needed, and in particular bioformulations that exhibit complementary and synergistic effects with mineral fertilization. Such an integrated soil fertility management strategy has been demonstrated through several controlled and non-controlled experiments, but more efforts have to be made in order to thoroughly understand the multiple functions of beneficial microorganisms within the soil microbial community itself and in interaction with plants and mineral resources. In fact, the combined usage of microbial [i.e., beneficial microorganisms: N2-fixing (NF), P-solubilizing, and P mobilizing, etc.] and mineral resources is an emerging research area that aims to design and develop efficient microbial formulations which are highly compatible with mineral inputs, with positive impacts on both crops and environment. This novel approach is likely to be of a global interest, especially in most N- and P-deficient agro-ecosystems. In this review, we report on the importance of NF bacteria and P solubilizing/mobilizing microbes as well as their interactions with mineral P fertilization in improving crop productivity and fertilizers efficiency. In addition, we shed light on the interactive and synergistic effects that may occur within multi-trophic interactions involving those two microbial groups and positive consequences on plant mineral uptake, crop productivity, and resiliency to environmental constraints. Improving use of mineral nutrients is a must to securing higher yield and productivity in a sustainable manner, therefore continuously designing, developing and testing innovative integrated plant nutrient management systems based on relevant biological resources (crops and microorganisms) is highly required.

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Modelling the Functional Role of Microorganisms in the Daily Exchanges of Carbon between Atmosphere, Plants and Soil

Cited by 16 publications

References 15 publications

The intercropping cowpea-maize improves soil phosphorus availability and maize yields in an alkaline soil

The intercropping cowpea-maize improves soil phosphorus availability and maize yields in an alkaline soil

Species Interactions Improve Above-Ground Biomass and Land Use Efficiency in Intercropped Wheat and Chickpea under Low Soil Inputs

Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System

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