Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya
The aim of this study was to assess the potential of commercial mycorrhizal inoculants and a rhizobial inoculant to improve soybean yield in Kenya. A promiscuous soybean variety was grown in a greenhouse pot study with two representative soils amended with either water-soluble mineral P or rock P to assess product performance. The performance of selected mycorrhizal inoculants combined with a rhizobial inoculant (Legumefix) was then assessed with farmer groups in three agroecological zones using a small-plot, randomized complete block design to assess soybean root colonization by mycorrhiza, nodulation, and plant biomass production in comparison to rhizobial inoculant alone or with water-soluble mineral P. Greenhouse results showed highly significant root colonization by commercial mycorrhizal inoculant alone (p < 0.001) and in interaction with soil type (p < 0.0001) and P source (p < 0.0001). However, no significant effect was shown in plant P uptake, biomass production, or leaf chlorophyll index. In field conditions, the effects of mycorrhizal and rhizobial inoculants in combination or alone were highly context-specific and may induce either a significant increase or decrease in root mycorrhizal colonization and nodule formation. Mycorrhizal and rhizobial inoculants in combination or alone had limited effect on plant P uptake, biomass production, leaf chlorophyll index, and grain yield. Though some mycorrhizal inoculants induced significant root colonization by mycorrhizal inoculants, this did not lead to higher soybean yield, even in soils with limited P content. Our results are further evidence that inoculant type, soil type, and P source are critical factors to evaluate commercial inoculants on a context-specific basis. However, our results highlight the need for the identification of additional targeting criteria, as inoculant type, soil type, and P source alone were not enough to be predictive of the response. Without the identification of predictive criteria for improved targeting, the economic use of such inoculants will remain elusive.
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Language: | eng |
Subjects: | P34 - Biologie du sol, mycorhization, Rhizobium, inoculation des racines, augmentation de rendement, Glycine max, colonisation de la rhizosphère, phosphore, http://aims.fao.org/aos/agrovoc/c_36163, http://aims.fao.org/aos/agrovoc/c_6563, http://aims.fao.org/aos/agrovoc/c_35955, http://aims.fao.org/aos/agrovoc/c_8487, http://aims.fao.org/aos/agrovoc/c_3301, http://aims.fao.org/aos/agrovoc/c_37240, http://aims.fao.org/aos/agrovoc/c_5804, http://aims.fao.org/aos/agrovoc/c_4086, |
Online Access: | http://agritrop.cirad.fr/595725/ http://agritrop.cirad.fr/595725/1/Faye%20et%20al%20Sustainability%202020%20full%20reference.pdf |
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dig-cirad-fr-5957252024-01-29T02:47:08Z http://agritrop.cirad.fr/595725/ http://agritrop.cirad.fr/595725/ Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya. Faye Adana, Stewart Z.P., Ndung'u-Magiroi K.W., Diouf Macoumba, Ndoye Ibrahima, Diope T., Dalpé Y., Prasad P. V. Vara, Lesueur Didier. 2020. Sustainability, 12:3803, 15 p.https://doi.org/10.3390/su12093803 <https://doi.org/10.3390/su12093803> Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya Faye, Adana Stewart, Z.P. Ndung'u-Magiroi, K.W. Diouf, Macoumba Ndoye, Ibrahima Diope, T. Dalpé, Y. Prasad, P. V. Vara Lesueur, Didier eng 2020 Sustainability P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 Kenya http://aims.fao.org/aos/agrovoc/c_4086 The aim of this study was to assess the potential of commercial mycorrhizal inoculants and a rhizobial inoculant to improve soybean yield in Kenya. A promiscuous soybean variety was grown in a greenhouse pot study with two representative soils amended with either water-soluble mineral P or rock P to assess product performance. The performance of selected mycorrhizal inoculants combined with a rhizobial inoculant (Legumefix) was then assessed with farmer groups in three agroecological zones using a small-plot, randomized complete block design to assess soybean root colonization by mycorrhiza, nodulation, and plant biomass production in comparison to rhizobial inoculant alone or with water-soluble mineral P. Greenhouse results showed highly significant root colonization by commercial mycorrhizal inoculant alone (p < 0.001) and in interaction with soil type (p < 0.0001) and P source (p < 0.0001). However, no significant effect was shown in plant P uptake, biomass production, or leaf chlorophyll index. In field conditions, the effects of mycorrhizal and rhizobial inoculants in combination or alone were highly context-specific and may induce either a significant increase or decrease in root mycorrhizal colonization and nodule formation. Mycorrhizal and rhizobial inoculants in combination or alone had limited effect on plant P uptake, biomass production, leaf chlorophyll index, and grain yield. Though some mycorrhizal inoculants induced significant root colonization by mycorrhizal inoculants, this did not lead to higher soybean yield, even in soils with limited P content. Our results are further evidence that inoculant type, soil type, and P source are critical factors to evaluate commercial inoculants on a context-specific basis. However, our results highlight the need for the identification of additional targeting criteria, as inoculant type, soil type, and P source alone were not enough to be predictive of the response. Without the identification of predictive criteria for improved targeting, the economic use of such inoculants will remain elusive. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/595725/1/Faye%20et%20al%20Sustainability%202020%20full%20reference.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.3390/su12093803 10.3390/su12093803 info:eu-repo/semantics/altIdentifier/doi/10.3390/su12093803 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.3390/su12093803 |
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P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_4086 P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_4086 |
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P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_4086 P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_4086 Faye, Adana Stewart, Z.P. Ndung'u-Magiroi, K.W. Diouf, Macoumba Ndoye, Ibrahima Diope, T. Dalpé, Y. Prasad, P. V. Vara Lesueur, Didier Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
description |
The aim of this study was to assess the potential of commercial mycorrhizal inoculants and a rhizobial inoculant to improve soybean yield in Kenya. A promiscuous soybean variety was grown in a greenhouse pot study with two representative soils amended with either water-soluble mineral P or rock P to assess product performance. The performance of selected mycorrhizal inoculants combined with a rhizobial inoculant (Legumefix) was then assessed with farmer groups in three agroecological zones using a small-plot, randomized complete block design to assess soybean root colonization by mycorrhiza, nodulation, and plant biomass production in comparison to rhizobial inoculant alone or with water-soluble mineral P. Greenhouse results showed highly significant root colonization by commercial mycorrhizal inoculant alone (p < 0.001) and in interaction with soil type (p < 0.0001) and P source (p < 0.0001). However, no significant effect was shown in plant P uptake, biomass production, or leaf chlorophyll index. In field conditions, the effects of mycorrhizal and rhizobial inoculants in combination or alone were highly context-specific and may induce either a significant increase or decrease in root mycorrhizal colonization and nodule formation. Mycorrhizal and rhizobial inoculants in combination or alone had limited effect on plant P uptake, biomass production, leaf chlorophyll index, and grain yield. Though some mycorrhizal inoculants induced significant root colonization by mycorrhizal inoculants, this did not lead to higher soybean yield, even in soils with limited P content. Our results are further evidence that inoculant type, soil type, and P source are critical factors to evaluate commercial inoculants on a context-specific basis. However, our results highlight the need for the identification of additional targeting criteria, as inoculant type, soil type, and P source alone were not enough to be predictive of the response. Without the identification of predictive criteria for improved targeting, the economic use of such inoculants will remain elusive. |
format |
article |
topic_facet |
P34 - Biologie du sol mycorhization Rhizobium inoculation des racines augmentation de rendement Glycine max colonisation de la rhizosphère phosphore http://aims.fao.org/aos/agrovoc/c_36163 http://aims.fao.org/aos/agrovoc/c_6563 http://aims.fao.org/aos/agrovoc/c_35955 http://aims.fao.org/aos/agrovoc/c_8487 http://aims.fao.org/aos/agrovoc/c_3301 http://aims.fao.org/aos/agrovoc/c_37240 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_4086 |
author |
Faye, Adana Stewart, Z.P. Ndung'u-Magiroi, K.W. Diouf, Macoumba Ndoye, Ibrahima Diope, T. Dalpé, Y. Prasad, P. V. Vara Lesueur, Didier |
author_facet |
Faye, Adana Stewart, Z.P. Ndung'u-Magiroi, K.W. Diouf, Macoumba Ndoye, Ibrahima Diope, T. Dalpé, Y. Prasad, P. V. Vara Lesueur, Didier |
author_sort |
Faye, Adana |
title |
Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
title_short |
Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
title_full |
Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
title_fullStr |
Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
title_full_unstemmed |
Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya |
title_sort |
testing of commercial inoculants to enhance p uptake and grain yield of promiscuous soybean in kenya |
url |
http://agritrop.cirad.fr/595725/ http://agritrop.cirad.fr/595725/1/Faye%20et%20al%20Sustainability%202020%20full%20reference.pdf |
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