Banana is another abundant crop covering an area of . Banana chips are also processed in the province. Oil palm plantation covers . The plantation is a Malaysian-Filipino joint venture, with agrarian reform beneficiaries as land owners. Crude oil is processed in the sites of Rosario, and Trento. Coconut trees are widespread in the province, covering . Despite the government's efforts to increase poultry and livestock production, deficits in meat supply persist. Processed poultry and beef are imported from Davao City and Cagayan de Oro City. Agusan del Sur is highly dependent on Surigao del Sur and other provinces for the supply of marine products. However, the province has abundant supply of fresh water fish like mudfish, catfish and tilapia. Agusan del Sur has two congressional districts encompassing its 13 municipalities and 1 component city. Rufino C. Otero was elected as the first Provincial Governor and Democrito O. Plaza the first Congressman in the election of November 1969. The term of office of Congressman Democrito O. Plaza would have continued until December 1973 had it not for the proclamation of Martial Law on September 21, 1972, which in effect abolished the Congress. When the Interim Batasang Pambansa was convened in 1978 after almost a decade of absence under the martial Law, Edelmiro Amante represented the province in the National Assembly. The province annually celebrates its Naliyagan Festival, a celebration of the foundation anniversary of Agusan del Sur which is a week-long socio-cultural and arts exposition of indigenous tribes in the entire Agusan valley and displaying their skills and gracefulness in dancing as part of their ritual activities. It is being held in the Naliyagan Plaza at the Agusan del Sur Capitol Grounds in the municipality of Prosperidad. "Naliyagan" is a Manobo word which means "the chosen one" or "the most loved one". One of the most ecologically significant wetlands in the Philippines, the Agusan Marsh is situated in the heart of Mindanao's Agusan Basin, covering an area of . It contains nearly 15% of the nation's fresh water resources in the form of swamp forests. During the rainy season, when the water rises to create large lakes, vast number of ducks come to Agusan Marsh to nest. In the dry months, thousands of birds come from as faraway as Japan, China and Russia to escape the chilly winter winds of Northern Asia.