In this paper we provide an alternative method of construction for incomplete block designs used for varietal trails by using designs for factorial experiments where the level codes of the factors are modified. By this method many existing designs are obtained quite simply and some new designs...

In Asia, the fisheries sector is important in terms of food security, livelihoods and foreign exchange earnings. However, as in many parts of the world, there are signs that capture fisheries are fully exploited or overfished. Management of fisheries in the region is often hampered by lack of...