Economic impact of adopting bundled SAPs on crop yield and household incomes among smallholder maize farmers in Morogoro region, Tanzania
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal Of Research In Business And Social Science
Abstract
This paper uses a multinomial endogenous treatment effect model and data from a sample of 470
farming households to assess the impacts of adopting sustainable agricultural practices (SAPs) on
farm yield and household incomes among smallholder maize farmers in Morogoro region. Results show
that combination of improved maize and crop residual significantly increased maize yield by 46%,
while intercropping with crop residual (65%), improved maize seeds with manure use (58%), and
maize rotation with intercropping (57%). The model estimates indicate that individual elements of
SAPs increased yield by crop residual (30%), crop rotation (38%), improved maize varieties (85%),
intercropping (58%), and manure (43%) whereas, the application of bundled SAPs had significant
impacts on the household income via the following combinations; maize-legume rotation and crop
residual (50%), improved maize and crop residual (46%), improved maize and manure (70%), maize-
legumes rotation and improved maize (46%), maize rotation and intercropping (68%), maize rotation,
improved maize, crop residual, and intercropping (41%), and lastly improved maize, intercropping,
manure, crop residual, and crop rotation (55%). The study recommends actors involved in the design,
promotion and dissemination of SAPs to find a suitable mix or combination of these practices that will
enhance maize productivity and incomes, while simultaneously addressing issues related to the dis-
adoption of SAPs, and climate change, by raising awareness and educating to farmers about the
benefits of using SAPs and implementing mitigative measures for climate change. This includes
providing of financial incentives such as loans and subsidies, as well as conducting policy reforms to
evaluate and adjust policies that currently favor the use of conventional practices in Tanzania.
Description
Journal article
Keywords
Sustainable agriculture practices, Maize yield, Household income, MERS Model, Tanzania