A field experiment was done at SAU Farm, in winter(10 Nov. 2004-07 Mar.2005)to investigate the effect of vermicompost and NPK (Nitorgen+Phosphorous+Potassium) on the growth, chemical composition and yield of wheat. The experimental soil was silty clay, pH 6.0. The treatments were 4 levels of vermicomposts viz. V0 (0 t ha-1), V1 (1 t ha-1), V2 (2 t ha-1), V3 (3 t ha-1), and 4 levels of fertilizers viz. F0 = (0-0-0 kg ha-1), F1 = low (40-30-20 kg ha-1), F2 = medium (80-60-40 kg ha-1), F3 = high (120-80-60 kg ha-1) of N-P2O5-K2O with 16 treatments combinations and 3 replications. The results showed that with increasing the doses of vermicomposts and fertilizers increased grain and straw yield significantly up to a level. The maximum significant grain and straw yields were obtained with the treatment combinations V3F2 or V2F3. The highest doses of vermicompost and chemical fertilizers increased N, P, K and S concentrations in wheat plant significant at different stages of plant growth and also enhanced N, P, K and S uptake significantly at the ripening stage. Chemical fertilizers failed to increase organic matter in post harvest soil, but vermicomposts showed a significant positive res

In coastal area interactions among air, water and soil take place. The nature of water and amplitude of the tidal regimes resulted in the poor understanding.The present study focused on a segment of the coastal zone of Bangladesh. Soils collected from the three islands were found to be rather similar as regard to chemical properties, although some variables differed significantly among the islands. No general pattern of significant variation was found location wise. Element concentrations of leaves of Sonneratia apetala showed significant variations among the islands. In most cases, location 2 of the river Buragauranga had higher values of the variables. Among the phytoplankton genera, 8 belong to class Bacillaiophyceae. Dominant phytoplankton was Trachelomonas sp. and was found in all three locations. Phytoplankton diversity was high in location 2. Principal component analysis (PCA) showed that Trachelomonas sp. has negative significant correlation with principal component one but have positive relation with Coscinodiscus sp. This book will help in understanding the coastal zone as holistic approaches have been taken and help in conservation and management of coastal resources.