Decline farm product prices and the subsequent effect of diminishing farm income become a core factor of sustaining peasant agriculture in developing countries. The small holding agriculture concentrated on paddy and vegetables farming in Sri Lanka also suffered from the issue causing many threats to sustain the industry. Nearly 30 percent of the labour force in Sri Lanka occupied in agriculture and thus deteriorating farm income has become core issue in national development.
Agriculture in South Asia is vulnerable to climate change. Therefore, adaptation measures are required to sustain agricultural productivity, to reduce vulnerability, and to enhance the resilience of the agricultural system to climate change. There are many adaptation practices in the production systems that have been proposed and tested for minimizing the effects of climate change. Some socioeconomic and political setup contributes to adaptation, while others may inhibit it.