A reliable supply of water is critical for agricultural intensification and yield improvement. Technological devices that lift, transport and apply water contribute to increased yield from improved crop varieties and high input cultivation. The increasing use of motor pumps is a significant contribution to the development of small-scale irrigation.
Farmers are in a continuous process of, individually and as community groups, adjusting to the observed variability in climate parameters. Climate shocks are considered by farmers in their decision-making as factors affecting risk and uncertainty, and farmers make their choices so as to minimize such risks. The overall outcome of these individual and community efforts is known as climate adaptation, which itself is a continuous process. Farmers are traditionally supported by local institutions in this process, which are also currently in a state of transformation.
The overuse and misuse of chemical pesticides has widely been reported in vegetable cultivation in Sri Lanka. While safer and environmental friendly pest and disease management methods such as Integrated Pest Management (IPM) are popular around the world, only little effort has been taken to promote IPM in Sri Lankan vegetable cultivation. Furthermore, farmers have not shown much interest on practicing IPM in vegetable cultivation.
This article evaluates the equity performance of bulk water allocation as an irrigation management strategy in the Mahaweli Ganga Development Project, Sri Lanka. Through semi-structured interviews with farmers and irrigation officials, the study collected local perceptions using seven indicators: water rights; decision-making process; contribution of resources for irrigation maintenance; water allocation rules; actual water distribution; information sharing; and conflict resolution.
Soil erosion by water is currently one of the most notable types of land degradation in Samanalawewa Watershed in Sri Lanka, creating copious environmental and socioeconomic impacts. Thus, with the aim of detecting and mapping the rates of human-induced soil erosion in the watershed, remote sensing and geographic information system based modelling and field experiments were carried out.
Many attempts, which were aimed at promoting Sustainable Agricultural Systems (SAS) in Sri Lanka failed due to poor acceptance by farmers. This situation still exists in spite of the formidable scientific evidence that supports the physical effectiveness of these systems to solve the respective problems. Factors that lead to poor acceptance of SAS by farmers can be broadly categorized as system specific factors and general factors that affect all systems commonly.
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