Purpose This study examines the adoption drivers of scale-appropriate mechanization in Nepal's maize-based farming systems. The authors also assess the contribution of scale-appropriate mechanization to the United Nations Sustainable Development Goals (SDGs) of zero hunger (SDG2) and no poverty (SDG1). Design/methodology/approach Propensity score matching and doubly robust inverse probability-weighted regression adjusted methods were applied to estimate the effects of mini-tiller adoption. These methods control the biases that arise from observed heterogeneities between mini-tillers users and nonusers. Findings The study findings show that farm size, labor shortages, draft animal scarcity, market proximity, household assets and household heads' educational level influence the adoption of mechanization in Nepal. Mechanized farms exhibited enhanced maize productivity, profits and household food self-sufficiency. Reduced depth and severity of poverty were also observed. Nevertheless, these effects were not uniform; very small farms (≤0.41 ha) facing acute labor shortages benefited the most. Research limitations/implications The study results suggest that policymakers in developing nations like Nepal may wish to expand their emphasis on scale-appropriate mechanization to improve farm productivity and household food security, reduce poverty and contribute to the SDGs. Originality/value This first-of-its-kind study establishes the causal effects between scale-appropriate farm mechanization and SDG1 (no poverty) and SDG2 (zero hunger) in a developing nation.

Summary Motivation Agricultural mechanization was once a mainstream issue. From the 1990s onwards it received less priority, as public policy concern for equitable economic development in rural areas faded. Despite recent signs of renewed interest, questions of rural mechanization require more systematic attention. After a long period of neglect, our knowledge is in disarray. Purpose This article traces the evolution of thinking about rural mechanization. It examines how three increasingly important factors affect or potentially affect mechanization: (1) expansion of capital goods markets; (2) evolving urban–rural linkages; and (3) climate crisis. Methods and approach The article reviews the literature that documents long‐standing debates, and that which records changes in the rural areas of the global south in the 2010s. Findings Public policy for rural mechanization was often seen in the 1960s as central to rural development. When neoliberal economics rose in the 1980s, it was thought issues of mechanization could be left to the suppliers and customers in the market. In the meantime, and especially in Asia, many rural operations have been mechanized, but these changes have attracted relatively little attention from either researchers or policy‐makers. In the 2010s, the pattern of mechanization has been influenced by changes in the production of machinery and the way that suppliers try to sway policy‐makers towards favouring their products; by changes in the relations between urban and rural areas, including the emergence of rural labour shortage and the availability of remittances for capital investment; and by the challenges posed to farmers by global heating and the climate crisis. Each of these trends is potentially disruptive, risking disjuncture between our understandings of the changing realities of “real world" rural livelihoods and wider political economy on the one hand, and the need to ensure the relevance of research agendas to policy priorities on the other. Policy implications Policy‐makers need to embrace a more holistic view of mechanization based on evidence from multi‐disciplinary research. Policy needs rebalancing to enable a more integrated view of national economies; a greater recognition of the realities of mechanization for smaller farmers and small to medium entrepreneurs; and improved data collection, including experimenting with public–private partnerships for data collection.

Groundwater irrigation has played a critical role in the Green Revolution in South Asia, helping to increase crop yields and improve livelihoods of millions of rural households. However, the spread of irrigation has not been homogeneous, with many farmers in the Eastern Indo-Gangetic Plains (EIGP – Nepal Terai and parts of eastern India) still lacking reliable and affordable irrigation access. As a result, agricultural productivity in the EIGP is some of the lowest found across South Asia, with many farmers trapped in chronic cycles of poverty and food insecurity. A major focus of government and donor efforts to support intensification of groundwater irrigation in the EIGP has been the replacement of existing diesel-based pumping systems with alternative electric or solar powered pumping technologies. These technologies are viewed as being cheaper for to operate and less environmentally damaging due to their lower operational carbon emissions. However, scaling these technologies in practice has proved challenging due to their high upfront capital costs and the unique socio-technical constraints posed by farming systems in the EIGP (e.g., land fragmentation and poorly developed supply chains). In response to these challenges, our research explores whether opportunities exist to make existing diesel pump systems more cost effective for farmers to support adaptation to climate change and reduce poverty. In particular, we seek to identify what factors lead to disparities in groundwater access costs for irrigation, how these disparities affect farmers’ water use behavior, and in turn how this impacts agricultural production outcomes. Our work draws on evidence from a recent survey of over 400 farmer households in the Nepal Terai, along with detailed in-situ testing and analysis of the fuel efficiency and cost-effectiveness of over 100 diesel pumpsets in the same region conducted between 2019-20. Our results demonstrate that substantial variability exists in the costs of diesel pump irrigation in the EIGP and that higher costs of groundwater access are associated with lower levels of agricultural productivity and household income. Dependence on expensive pumpset rental markets, in particular amongst credit constrained households, is a major driver of the highest irrigation access costs. Additionally, many farmers also continue to operate and invest in pumpset models and designs that are significantly oversized for local hydrological conditions, resulting in fuel inefficiencies and excess costs that reduce the overall profitability of irrigation water use. Our findings have important implications for national and regional policy debates about sustainable intensification of irrigated agriculture in the EIGP and other regions. We suggest that intensification of water use and improvements in agricultural productivity can be achieved in the near-term without need for radical technology changes. Targeted credit support, combined with data-driven advisories and improved supply chains for maintenance services and spare parts, could incentivize and enable adoption of low-cost fuel-efficient diesel pumpsets resulting in substantial reductions in costs of irrigation for many farmers. This would have positive near-term impacts on agricultural productivity and rural livelihoods, supporting adaptation to climate change and future transitions to alternative low-carbon irrigation technologies in the region.

In the last few years there has been a revival of research and development (R&D) interest by the international agricultural and rural development community in the spread of smaller scale equipment and markets in customs services. This paper briefly reviews mainstream debates since the 1960s and evidence of a current revival of interest. It takes a case study of the recent rapid spread of mini tillers in the Nepal mid hills to show that this was the outcome of a long and complex R&D process. However, one of the central features of the history was the engagement of engineers with the reality of daily life of smaller farmers, small and medium entrepreneurs in local rural contexts. The case study illustrates that the R&D practice stretched over many years. The paper closes with five reflections, the importance of: 1) ongoing field work by engineers, economists, and anthropologists, 2) long term R&D interest in the complexities of local rural economies, 3) informal and artisanal R&D, 4) a policy/project/resources commitment to equitable economic development in rural areas, and 5) the individual.

Intensification of groundwater irrigation is central to goals of improving food security and reducing chronic poverty faced by millions of rural households across the eastern Indo-Gangetic Plains (EIGP) of Nepal and parts of eastern India. At present, levels of groundwater use and access in the EIGP lag far behind other areas of South Asia despite abundant available groundwater resources. A key reason for prevailing access constraints is the dependence on diesel pumpsets for accessing groundwater, which are typically unsubsidised and therefore expensive to purchase and operate. To date, efforts to reduce access costs have focused almost exclusively on how to incentivise adoption of alternative electric or solar-powered pumping technologies, which are viewed as being cheaper to operate and less environmentally damaging due to their lower operational carbon emissions. In contrast, there has been little attention paid to identifying opportunities to make existing diesel pump systems more cost effective for farmers to operate in order to support adaptation to climate change and reduce poverty. In this study, we use evidence from 116 detailed in-situ pump tests along with interviews with pumpset dealers, mechanics and farmers in the Nepal Terai to assess how and why fuel efficiency and operational costs of diesel pump irrigation are affected by farmers' pumpset selection decisions. We show that costs diesel pumpset irrigation can be reduced significantly by supporting and incentivising farmers (e.g., through equipment advisories, improved supply chains for maintenance services and spare parts) to invest in newer low-cost, portable and smaller horsepower pumpset designs that are more effectively matched to local operating conditions in the EIGP than older Indian manufactured engines that have historically been preferred by farmers in the region. Such interventions can help to unlock potential for intensified irrigation water use in the EIGP, contributing to goals of improving agricultural productivity and resilience to climate extremes while also strengthening farmers capacity to invest in emerging low-carbon pumping technologies.

Mechanization levels in Nepal, a largely agricultural country, were relatively low until a few decades ago. However, significant mechanization growth, including the adoption of tractors, has occurred since the 1990s, against a backdrop of rising rural wages, particularly for plowing, combined with growing emigration, growth in key staple crop yields, overall broad agricultural production growth, and improved market access and participation. This growth in mechanization has taken place despite the general absence of direct government support or promotion. The growth of tractor use in the plains of the Terai zone has transformed agricultural production rather than inducing labor movement out of agriculture. Thus it has raised overall returns to scale in intensification and enabled the cultivation of greater areas by medium smallholders than by resource-poor smallholders. Tractors have also facilitated the intensification of crop production per unit of land among very small farmers, enabling mechanization growth despite the continued decline in farm size, although these farmers may not have benefited as much as medium smallholders. Potential future research areas with policy relevance include mitigating accessibility constraints on tractor custom hiring services, identifying appropriate regulatory policies for mechanization, and providing complementary support to some smallholders who may not fully benefit from tractor adoption alone.

The past 50 years witnessed a remarkable spread of smaller-scale rural mechanization in some regions of South Asia, mostly characterized by the spread of single-cylinder diesel engines. These engines have been used for multiple purposes, such as providing power for shallow tubewell pumps, riverboats, two-wheel tractors, road and track transport vehicles, harvesters, threshers, grain mills, timber mills, and processing equipment. Diverse local market institutions for the buying and selling of water, tillage, transport, and many other services have been associated with the spread of smaller-scale rural equipment. Alongside these smaller-scale patterns of rural mechanization there have been significant increases in the intensity of agricultural production and in broader-based rural development. Despite this evidence, international and local policy debates do not reflect the significance of these patterns of rural mechanization for agricultural and rural development. We begin this paper with a discussion of three main generalizations arising from the spread of smaller-scale technology. We then take up policy issues and start by identifying four themes that explain why this smaller-scale mechanization transformation remained below the horizon in policy debates outside the regions where these changes have been taking place. We end the paper by discussing five ways forward in policy analysis.

This paper analyzes smallholder farmers' willingness to pay (WTP) for the purchase of scale-appropriate farm mechanization in the hill ecologies of Nepal using the case of mini-tiller technology: a small, 5-7 horsepower two-wheel tractor primarily used for agricultural land preparation. Using primary survey data from 628 randomly-selected households, we find that farm size, local wage rates, out-migration, access to credit services, and associations with agricultural cooperatives positively influence the WTP for mini-tillers while the number of draft animals owned negatively influence the WTP for mini-tillers. On average, farmers were willing to pay 31% less than the actual price of a mini-tiller. Results also exhibited a heterogeneous demand in which the lowest quartile farm size households, typically the poorest farm households, were willing to pay 26% less for the mini-tiller than the top quartile of farms. In the context of labor scarcity and rising rural wages, agricultural policy on farm mechanization in Nepal should aim to prioritize small farms through robust service provision models in order to increase the level of farm mechanization in the country.

Smallholder farmers in the mid-hills of Nepal are facing an acute labor shortage due to out-migration which, in general, has affected the capacity to achieve timely crop establishment, harvest, and inter-cultural operations. These effects are more visible in the case of labor-intensive crops such as rice and promoting higher levels of rural mechanization has emerged as the primary policy response option. Nevertheless, quantitative evidence for the ability of mechanization to offset the adverse effects of shortages increasing labor prices in these systems is largely absent. This study investigates the impacts associated with adoption of mini-tillers (5 to 9 horsepower) for land preparation on smallholder rice productivity in the mid-hills of Nepal. We use an endogenous switching regression that accounts for both observed and unobserved sources of heterogeneity between mini-tiller adopters and non-adopters. Findings demonstrate that rising on-farm rural wage rates and an emerging decline in draft animal availability are driving adoption of the mini-tiller. Among users, the mini-tiller increased rice productivity by 1,110 kg/ha (27%). Further, regression results suggest that mini-tiller non-adopters would be able to increase their rice productivity by 1,250 kg/ha (26%) if they adopt. Moreover, our analysis revealed that very small farms (≤0.25 ha) that adopt mini-tillers are benefited the most in terms of gains in rice productivity. These findings support policies that favor the expansion of small-scale mechanization in the hill production ecologies of South Asia and highlight the need to foster the emergence of an associated service economy that will permit smallholders access to capital-intensive machinery such as the mini-tiller.

This paper is concerned with the historical spread of small scale engines in Asian countries over the last 50 years. Small, mostly single cylinder internal combustion engines (up to 24 hp) that have been used to power pumpsets, boats, vehicles, threshers, ploughs, rotators and other tillage implements, hullers, etc. The paper argues that the spread of smaller scale tractors (power tillers), pumpsets etc. is a neglected topic in the literatures, in spite of the evidence that this equipment has often contributed a significant, if not the major, source of mechanical energy for agricultural production increases and rural economic development. The paper uses two analytical frameworks to position the analysis: firstly, conventional Leontief input output economics, which looks at the interrelationships between sectors in an economy where pumps, tractors, etc. are seen as rural capital goods, and secondly, the historical literature on Appropriate Technology. It is argued in this paper that in the last few years there has been a substantial resurgence in policy interest in appropriate technology, after many years of neglect. Brief illustrative examples are given of the spread of small scale equipment, (diesel engine irrigation pumpsets, two-wheel tractors, power tillers, mini tillers and shallow tube wells). The paper discusses: the diverse histories and patterns of rural mechanization between and within countries; markets in powered services from small engines; the importance of informal R&D in rural mechanization, as well as the past prevalence, recent interest in and problematic nature of South-South technology exchanges. The paper does not set out to enter into academic debates, but does refer to some of the data and analytical problems that characterize such analysis. It concludes by suggesting that the culture of local policy discourse between researchers and policy makers is a major determinant in understanding past changes, and hence is important for future policy purposes.

ABSTRACT Ghana is one of a few African countries where agricultural mechanization has recently undergone rapid development. Except for places in the forest zone where stumps are still an issue in fields, tractors used for plowing and maize shelling have been widely adopted even among small farmers. Medium- and large-scale farmers who own tractors provide the majority of mechanization services. Recognizing this fundamental fact is important for designing any effective mechanization policy, which should aim at the entire service market instead of targeting a selected group of service providers as beneficiaries. Tractor owners and operators are often discouraged from traveling long distances to plow only a few acres for individual small farmers, which becomes a considerable barrier for smallholders to access tractor services on time. This requires the government consider mechanisms to improve coordination among small farmers and to encourage Farmer Based Organizations (FBOs) to facilitate such coordination. The use of harrowing or second-plowing has been shown as a productivity-enhancing farming practice but it is currently under-demanded by farmers. A pilot program to address the coordination failures and to nudge small farmers to adopt harrowing services together can be considered.

Nepal has tremendous hydropower potential yet paradoxically experiences, until recently, loadshedding of up to 18 hours daily in the dry season and has not achieved self-reliant energy security. This paper analyses this paradox by reviewing the growth of hydroelectricity sector in Nepal. It identifies four phases; the illustration of technical capacity, industrial training and early investments, major policy challenges and paradigm shift and maturing hydropower sector. The spread of improved water mills as well as hydro installations is also reviewed briefly. The paper argues that Nepal will meet much of its projected national demand very soon (2018/19) but attaining self-reliant energy security after displacing fossil fuel is not in the horizon yet. While substantial hydro investments are in the pipeline; a strong, diverse hydro-mechanical manufacturing industry is established. But the electro-mechanical industry is non-existent. Policies have attracted substantial private investment in hydropower sector, but it is not geared towards the use of electricity for overall economic development of Nepal and has yet to streamline policy with respect to lean season augmented flow of water for drinking and irrigation purposes within and outside Nepal. A more fundamental paradox is that Nepal government has yet to acknowledge these anomalies that hinder sustainable economic developments.HYDRO Nepal JournalJournal of Water, Energy and Environment Issue: 23Year: 2018

This paper sets out to reflect on research in the early 1970s to develop a policy model in the Leontief macroeconomic tradition for the Kosi command area, and investigate the relevance of such models to today’s policy debates for the overall Kosi River basin. The earlier research was set in the context of the ‘generation of problems’ arising from the Indian Green Revolution. Many of the debates at the time concerned policies for the promotion of capital goods in rural areas, such as different types of irrigation technologies, tractors, harvesters, threshers and processing technology, and policies to encourage rural industries to support alternative patterns of rural mechanization. The authors describe the academic and fieldwork contexts of the earlier research; then, in order to ground this paper in a contemporary context, the authors briefly describe the spread of some capital goods in recent years on both the Nepal and Bihar sides of the Kosi river Basin. The authors then review contemporary literature to see what academic research is being done now on the Kosi River basin and find a large hydrology and socio-economic literature. However, as far as the authors can tell, this research is not focusing on macro Leontief economic modelling for policy purposes or on studies to understand the spread of rural capital goods and the growth of small and medium rural industries. The authors conclude by suggesting that Leontief economics needs reviving together with cost-effective field studies of the spread of rural capital goods and the growth of associated rural industries.

Field experiments were conducted to evaluate conventional tillage (CT), permanent raised bed (PRB), and zero tillage (ZT) with residue retention and removal at three nitrogen levels (0, 100, and 120 kg N ha-1) on wheat productivity, energy input and energy output, energy use efficiency, specific energy, and CO2 emission from 2010 to 2012 under rice-wheat system at Pheta V.D.C, Bara, Nepal. The experiments were carried out in strip split plot designs with three replications. Zero tillage wheat produced significantly higher grain yield (2616.5 kg ha-1), saved 10.4 % energy input, increased energy output (12.4 %), enhancing energy use efficiency by 25.2 % and reducing specific energy by 23.6 %, as compared to conventional tillage. Diesel consumption on crop establishment and irrigations were the lowest for ZT (48.6 liter ha-1) and the highest for CT (86.3 liter ha-1). PRB consumed the lowest quantity of diesel on two irrigations (34.6 liter ha-1) with higher energy use efficiency (3.4 %) and lower specific energy (8.76 MJ kg-1) over CT. The CO2 emission from CT was the highest (224.32 kg ha-1) over ZT (126.4 kg ha-1) and PRB (146.11 kg ha-1). Residue retention increased 4 % grain yield over residue removal. Without nitrogen application, energy output was the lowest (34192 MJ ha-1) with the highest specific energy (12.6 MJ kg-1). Thus, zero-till wheat with 40-cm residue retention and 100 kg N ha-1 application was suggested for mass scale adoption in the Tarai region of Nepal.DOI: http://dx.doi.org/njst.v15i2.12104 Nepal Journal of Science and Technology Vol. 15, No.2 (2014) 1-10

The need for sustainable intensification in Eastern and Southern Africa (ESA) is widely recognized as a requirement to achieve food security with minimum negative social and environmental consequences. In current Research & Development programs, much emphasis is placed on increasing the efficiency with which land, water and nutrients are used, whereas farm power appears to be a ‘forgotten resource’. This is a major concern when farm power in ESA countries is declining due to the collapse of most tractor hire schemes, the decline in number of draught animals and the growing shortage of human labour. A consequence of low levels of farm mechanization is high labour drudgery, which makes farming unattractive to the youth and disproportionally affects women. Undoubtedly, sustainable intensification in ESA will require an improvement in access to farm power. In this paper, we suggest this can be achieved through the use of small, multipurpose and inexpensive power sources such as two-wheel tractors (2WTs) coupled with the promotion of energy saving technologies such as conservation agriculture (CA), whilst ensuring the profitability for farmers, service providers and other private sector actors in the supply chain. We argue that appropriate mechanization in Africa, a paradigm largely abandoned three decades ago, may be re-examined through the combination of these three elements.