water, it is also used in ritual ceremonies or festivals and given as baya (provision) to the dead. The adat tebalu (widow or widower fee) for deceased women for Iban Dayaks will be paid according to her social standing and weaving skills and for the men according to his achievements in his lifetime. Dayaks being accustomed to living in jungles and hard terrains, and knowing the plants and animals are extremely good at following animals trails while hunting and of course tracking humans or enemies, thus some Dayaks became very good trackers in jungles in the military e.g. some Iban Dayaks were engaged as trackers during the anti-confrontation by Indonesia against the formation of Federation of Malaysia and anti-communism in Malaysia itself. No doubt, these survival skills are obtained while doing activities in the jungles, which are then utilised for headhunting in the old days. Agriculture and economy Traditionally, Iban agriculture was based on actual integrated indigenous farming system. Ibans plant hill rice paddies once a year in twenty-seven stages as described by Freeman in his report on Iban Agriculture. Agricultural Land in this sense was used and defined primarily in terms of hill rice farming, ladang (garden), and hutan (forest). The main stages of the paddy cultivation is followed by the Iban lemambang bards to compose their ritual incantations. The bards also analogizes the headhunting expedition with the paddy cultivation stages. Other crops planted include , cucumber (), , corn, , millet and cotton (tayak). Downriver Iban plant wet rice paddy at the low-lying riverine areas which are beyond the reach of the salt water tide. Dayaks organised their labour in terms of traditionally based landholding groups which determined who owned rights to land and how it was to be used. The Iban Dayaks practice a rotational and reciprocal labour exchange called to complete works on their farms own by all families within each longhouse. The "green revolution" in the 1950s, spurred on the planting of new varieties of wetland rice amongst Dayak tribes. For cash, the Ibans find jungle produce to sell at the market or town. Later, they planted rubber, pepper and cocoa. Nowadays, many Ibans work in towns to seek better sources of income. Trading is not a natural activity for the Iban. They did trade paddy for jars or salted fish coming from the sea in the old days but paddy lost its economic value