development of commercial grade inoculant
TRANSCRIPT
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Development of Commercial Grade Inoculant
Guido Ramirez Cáceres [email protected]
4th Annual Meeting of the Chickpea Innovation Lab
ICRISAT
13/11/2017
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What is Rizobacter?
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What is Rizobacter?
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What is Rizobacter?
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What is Rizobacter?
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What is Rizobacter?
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Microbiological Products
Inoculants
PGPM’s & Bio-Fertilizers
Bio-Control
Non-Biological Products
Adjuvants
Seedcare Products
Insecticides for stored grains
Baits for pest control
Crop Nutrition
Micro-granular Fertilizer
Services
Professional Seed Treatment (NTR)
Product Portfolio
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Strain selection
Formulation development
Field Evaluation
Registration
3-4 years 2-3 years 0-3 years
Commercial Stage
From lab to farm
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Chickpea Inoculant Portfolio
Nowadays: 6 month shelf-life
2018: at least 9 month shelf-life
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HQ & Subsidiaries
Dealers
Next
RIUSA
RIBRA
RIBO
RIPA
RIU
MANAGED
BY ROTW
MANAGED
BY ROTW
Rizobacter in the World
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UC-Davis & Rizobacter agreement
• Research Collaboration started in March 2017.
• Objective: development of rhizobia inoculant technologies.
• 33 isolates shipped from UCDavis for execution of lab and
field trials in April 2017.
• 10 isolates selected for a first stage and formulated in May
2017.
• Growth chamber trial planted in June 2017.
• 2nd batch in August 2017
• Ongoing field trials in Ethiopia and India
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Agar tube
Cryo-conservation of strains (-75ºC)
Rhizobia strains from CRC project
Strain ID Origin Taxonomy* Host of origin
ET-24 Ethiopia M. plurifarium Cicer arietinum
hyd-7 India M. plurifarium Cicer arietinum
ET-26 Ethiopia M. sp. 1-2 Cicer arietinum
ET-1 Ethiopia M. sp. 2 Cicer arietinum
46P3S2 Ethiopia M. plurifarium Cicer arietinum
hyd-22 India M. temperatum Cicer arietinum
58P2S1 Ethiopia M. sp. 1-2 Cicer arietinum
43P5S1 Ethiopia M. plurifarium Cicer arietinum
kar-203 Turkey M. ciceri Cicer echniospermum
CW-185 USA M. loti Cicer arietinum
B2O3 Turkey M. mediterraneum Cicer reticulatum
45P2S1 Ethiopia M. plurifarium 5 Cicer arietinum
43P1S1 Ethiopia M. plurifarium 2 Cicer arietinum
43P2S2 Ethiopia M. plurifarium 3-b Cicer arietinum
45P4S1 Ethiopia M. plurifarium 4 Cicer arietinum
80P4S2 Ethiopia M. plurifarium 1 Cicer arietinum
2P3S1-b Ethiopia M. gobiense Cicer arietinum
cw-21 Canada M. ciceri Cicer arietinum
aus-2 Australia M. ciceri Cicer arietinum
27P3S2 Ethiopia M. ciceri Cicer arietinum
*Closest named species
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Small Erlenmeyer
Medium Erlenmeyer
Small bio-reactor
• Growth curves
• Stability (cfu/ml, pH)
• Purity
• Biological efficacy (growth chamber)
Formulation development
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Broth with bacteria strain
Culture medium
Stabilizing agents
Formulated liquid inoculant
Production of inoculant
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Viability: bacteria count on plate
Microbiological purity (detection of contaminant fungi and bacteria)
pH
On-package evaluations
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Microbial control methods
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Nodulation assessment in growth chamber
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Nodulation assessment in growth chamber
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Nodulation assessment in growth chamber
Control
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USDA3383
Nodulation assessment in growth chamber
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Nodulation assessment in growth chamber
Kar-203
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43P2S2
Nodulation assessment in growth chamber
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• Two strains are particularly promising, kar-203
(M.ciceri) from Turkey and 43P2S2 (M. pluriafarium)
from Ethiopia
• Further work can be done to improve formulations
• Competitiveness of strains in soils with naturalized
rhizobia has to be explored
• Field trials will help understand interactions between
strain/host/site
Final comments
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