1513 the system of rice intensification (sri)
TRANSCRIPT
Wheat
How SRI is Different from Conventional Rice Production
New Agronomy for Rice Production
Tested / adopted in 50+ countries
ConventionalRice Production
Using 4 principles:
Early and careful plant
establishment
SRI helps farmers to:
INCREASE YIELDS by 30-50% or more
REDUCE SEED USE by 80-95%
REDUCE CHEMICAL USE by 30-100%
SAVE WATER30-50% less
Reduced plant competition
Use of organic matter
Reduced water use (non-flooded
soils)
The System of Rice Intensification (SRI) is an agroecological and climate-smart methodology that produces more grain, while reducing, water, seed and agrochemical use. SRI helps farmers both adapt to and mitigate climate change.
Early and careful transplantingIf transplanting, do so at the 2-leaf stage, about 7-12 days after germination
Only 1 seedling per ‘hill’Each plant is given space for roots and shoots to grow, resulting in reduced competition
Wide spacingPlants are transplanted or direct seeded in a square grid, with 25cm or more between each plant
Non-flooded soilsAerobic soils promote plant health, larger roots, and beneficial soil microbial populations
Use of organic matterOrganic mater improves plant nutrition, microbial populations, soil structure and healthy moisture levels
Mechanical weeding and I.P.M.Incorporates weeds back into the soil and aerates the surface soil
Transplanting older seedlingsPlants are taken out of the nursery at 25-45 days old, limiting their ability to grow and hurting yields
Multiple seedlings per ‘hill’Typically 3-5 seedlings are planted per hill, resulting in competition for sunlight, air, and nutrients
Close hill spacingReduces weed pressure, but increases competition between rice plants for sunlight, air and soil nutrients
Continuous floodingMinimizes weed growth, but adversely affects soil health and rice plant growth, stunting development
Use of Chemical fertilizersChemical fertilizers address immediate plant needs, but not long-term soil health
Herbicides and hand weedingCan be dangerous to farmers and local water supply, and can harm soil health
SRI Methods
The System of Rice Intensification (SRI)
SRI creates more productive plants
And can be used with other crops
SRI Conv.
Larger roots
SRI Conv.
Finger Millet
More tillers