Testing of commercial inoculants to enhance P uptake and grain yield of promiscuous soybean in Kenya

Autor: Ibrahima Ndoye, Didier Lesueur, Yolande Dalpé, T. Diope, Zachary P. Stewart, Keziah Wairimu Ndung'u-Magiroi, Adana Faye, Macoumba Diouf, P. V. V. Prasad
Přispěvatelé: Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA), Kansas State University, Kenya Agricultural & Livestock Research Organization (KALRO), Ministère de l'Agriculture et de l'Équipement rural (MAER), Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), ECORC Agriculture and Agri-Food, Agriculture and Agri-Food [Ottawa] (AAFC), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), International Center for Tropical Agriculture [Hanoï] (CIAT Asia), International Center for Tropical Agriculture [Colombie] (CIAT), Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Deakin University [Burwood], Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Bill and Melinda Gates Foundation through the Tropical Soil Biology and Fertility Institute of International Center for Tropical Agriculture (TSBF-CIAT) project with the acronym COMPRO 1 (COmmercial Microbial PRoducts 1), Agriculture and Agri-Food (AAFC), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
0106 biological sciences
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Glycine max
rhizobial inoculant
Geography
Planning and Development
Biomass
Arbuscular mycorrhizal fungi
01 natural sciences
7. Clean energy
Colonisation de la rhizosphère
Renewable energy sources
GE1-350
Colonization
Mycorrhiza
2. Zero hunger
Soil health
Augmentation de rendement
Environmental effects of industries and plants
biology
food and beverages
Phosphorus
04 agricultural and veterinary sciences
Soil type
Rhizobium
Phosphore
Inoculation des racines
Randomized block design
TJ807-830
Management
Monitoring
Policy and Law
[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study
Mycorhization
TD194-195
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
Microbial inoculant
soil health
Renewable Energy
Sustainability and the Environment
fungi
P34 - Biologie du sol
biology.organism_classification
Environmental sciences
Agronomy
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Mycorrhizal inoculant
010606 plant biology & botany
Zdroj: Sustainability
Sustainability, MDPI, 2020, 12 (9), pp.3803. ⟨10.3390/su12093803⟩
Sustainability, 2020, 12 (9), pp.3803. ⟨10.3390/su12093803⟩
Volume 12
Issue 9
Sustainability, Vol 12, Iss 3803, p 3803 (2020)
ISSN: 2071-1050
DOI: 10.3390/su12093803⟩
Popis: 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.
Databáze: OpenAIRE
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