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This paper explores the determinants of sustainable soil management (SSM) practices among Bangladeshi paddy farmers. Relevant information from 2681 paddy farmers was extracted from the nationally representative Bangladesh Integrated Household Survey (BIHS 2018–2019) dataset. Four SSM practices were commonly practiced with 37.04% of the sampled farmers adopting at least one SSM practice. 'Use of organic fertilizer' was the most common practice, whereas the other three, viz. 'zero-tillage', 'incorporate paddy residue', and 'legume cultivation' were less practiced by the farmers. Econometric analysis revealed that differences in the farmers' socio-economic conditions, environmental and institutional settings were the main drivers of the SMM practice decisions. Climatic factors were critical in shaping the farmers' decision to adopt SSM practices. Education, access to information and extension services increased the adoption probability of SSM practices. Improved infrastructure and being located within the economically vulnerable areas (e.g., Feed the Future zone) influenced the farmers' adoption decision, but the magnitude and direction varied depending on the individual circumstances. The farmers' socio-economic conditions, e.g., assets and farm size, also had a notable influence on the adoption of SSM practices. Policy implications include strengthening extension services, incorporation of climatic information in education and dissemination of information on SSM practices, particularly to farmers living in vulnerable areas. [ABSTRACT FROM AUTHOR]

Deep placement of briquette urea (BU) is environmentally friendly and promotes for better nitrogen use efficiency. Nonetheless, its farm-level adoption is low. This paper contributes to the existing literature on climate-smart technology adoption by examining the factors that affect the BU adoption decision using the national representative Bangladesh Integrated Household Survey (BIHS-15) dataset consisting of 3384 rice farmers in Bangladesh. BU adoption probability is higher for farms that specialize in rice production, have more assets, use mobile phones for farming and have better access to extension services. Also, empowered women have a higher propensity to adopt BU. However, living in the feed the future zone decreases adoption probability. BU adoption probability is inversely correlated with rainfall and salinity vulnerability, while the opposite is observed for cyclone and drought vulnerability. Compared to the prilled urea (PU) users, the BU adopters applied a significantly lower amount of urea. The adopters produce more and have a relatively higher return, though the differences are insignificant. The relatively high price of BU compared to PU and the associated high labor requirement dampers the benefit of adopting the technology. Reallocation of subsidies from PU toward BU could be an effective way of promoting BU technology. [ABSTRACT FROM AUTHOR]

Nitrogen (N) is an essential input for food production, but at the same time N raises serious concerns for air, water and soil pollution due to its overuse. Research shows that N use is influenced by socio-economic factors beyond the environmental circumstances while heavily depending on the agronomic practices and technologies used. Micro-level studies based on real farm observations are still scarce in this context. Therefore, this study estimated N use efficiency (NUE) and its climatic and socio-economic determinants, as well as N 2 O and NH 3 emissions from organic and inorganic fertiliser-amended fields. Through exploring primary data collected from 155 wheat growers from north-western Bangladesh, we estimated NUE of wheat production as the ratio of the total quantity of N produced in the harvested grain and the total quantity of N applied to soil through inorganic and organic fertilisers. Then we estimate a Tobit model to determine the socio-economic and farm-level practices influencing NUE. Finally, for N 2 O and NH 3 emissions, we applied region-specific emission factors, which are not sensitive to management practices but can give an approximation of emission and emission intensity of the production. The estimated mean NUE for North-West Bangladesh was 37.4%, which widely varied across different farm categories and farming practices used. Agronomic practices, including those induced by climate change, positively contributed to NUE. NUE was higher for the farmers cultivating high-yielding, drought-tolerant, and short-duration wheat varieties. NUE significantly increased when a farmer applied a combination of organic and inorganic fertilisers. Irrigation water pricing was critical in NUE since it influences farmers' water management practices. A notable quantity of N loss as N 2 O (5.98 kg/ha) and NH 3 (45.58 kg/ha) was emitted, and the farms managed by landless and marginal farmers emitted quantities more than others. Farmers with better landholding size, education and access to extension services operated at a relatively higher level of NUE. The policy suggestions to increase NUE include strengthening extension services, particularly for promoting a balanced supply of nutrients from organic and inorganic fertilisers, promoting volumetric irrigation water pricing and encouraging long-term tenurial arrangement. The paper is relevant to policy makers since, unlike earlier works based on experimental data, it estimates more robust indices of NUE and considers the role of different farms and farmer-specific socio-economic, anthropogenic and institutional factors in farm production. Finally, the paper estimates N 2 O and NH 3 emissions associated with wheat production. [Display omitted] • Low nitrogen use efficiency (NUE) is a concern in crop production in Bangladesh, along with many countries globally. • Analysing farm survey data, the paper estimated NUE, gaseous emissions inferred based on presumed defaults. • The estimated mean NUE was 37.4% which was found to be related to several socioeconomic factors. • Farm data, as opposed to experimental data, allowed assessing the effects of variables on NUE that would be hard otherwise. • The paper is novel in finding agronomic, socioeconomic and environmental determinants of NUE including climate change. [ABSTRACT FROM AUTHOR]