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MICROBIAL SYMBIONTS AND NUTRIENTS (N AND P) SHARING: EFFECT ON SOIL MICROBIAL ACTIVITY IN THE UPLAND RICE (Oriza sativa) AND BEAN (Phaseolus vulgaris) INTERCROPPING

Abstract : The symbiotic association (plant-soil-microorganisms) has an important role in nitrogen (N) and phosphorus (P)uptake. The main objective of this study is to assess the potential of fungal and rhizobial symbionts as well as the importance of plant-soil-microorganism interactions on microbial dynamics. The upland rice and the beans were cultivated in mono or in co-culture using the rhizospheric soil of the upland rice and beans collected on plots treated with different levels of organic and mineral fertilizers. What about saying: Microbial (fungal and rhizobial) inoculate were constituted by root fragments (rice or bean) collected from previous crop and coded as I1 (root fragments from rice), I2 (root fragments from bean) and I3(mixed root fragments from rice and bean). The results showed that soils inoculated with I1 and I3, were characterized by high phosphatase activity. These two treatments enhance also the amount of nitrogen and phosphorus in the aerial part of upland rice intercropped withbean. These results suggest that the bean with its symbiont can be considered as ecological engineers thatstimulate the biological functioning of soils and is beneficial for upland ricecultivation.
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https://hal.inrae.fr/hal-03025450
Contributor : Suzette Astruc <>
Submitted on : Thursday, November 26, 2020 - 11:58:40 AM
Last modification on : Monday, December 7, 2020 - 11:36:32 AM

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Adamson Tsoushima Ernest Razakatiana, Thierry Becquer, Herizo Randriambanona, Rondro Harinisainana Baohanta, Martial Doret Andrianandrasana, et al.. MICROBIAL SYMBIONTS AND NUTRIENTS (N AND P) SHARING: EFFECT ON SOIL MICROBIAL ACTIVITY IN THE UPLAND RICE (Oriza sativa) AND BEAN (Phaseolus vulgaris) INTERCROPPING. SCIENTIFIC PAPERS-SERIES A-AGRONOMY, 2020, 63 (1), pp.490-499. ⟨hal-03025450⟩

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