Vermicomposting of coirpith with cowdung by Eudrilus eugeniae Kinberg and its efficacy on the growth of Cyamopsis tetragonaloba (L) Taub

AbstractIn view of the growing awareness about ecofriendly organic farming and biotechnology, coirpith and cowdung natural sources were used to produce vermicompost which showed enhanced growth promoting effect in the crop Cyamopsis tetragonaloba. Initially, neutral detergent fibre, acid detergent fibre, lignin, cellulose and hemicellulose contents were determined in three different grades of coirpith and in cowdung. Vermicompost was prepared using the earthworm Eudrilus eugeniae with 60days maintenance. During composting N, P, K and C contents were estimated in vermicompost as well as in control compost. N, P and K values were highly increased in vermicompost. C:N was dramatically decreased in vermicomposting during the experimental period. Vermicompost enhanced the growth of tested C. tetragonaloba crop. Vermicompost treated plants were taller by 9cm when compared with the control plant. The use of Vermicompost also led to a marked increase in plant biomass

Integration of planning and scheduling in multi-site plants : application to paper manufacturing

In this paper, a general multi-level decomposition based framework has been proposed for integration of planning and scheduling in a multi-site, multi-product plant, with applications to paper manufacturing. The problem involves complex issues relating to large-scale production in a hybrid flowshop configuration, decisions relating to minimizing trim losses, while maintaining on-time delivery of orders. Due to these complexities, the overall problem of integrated planning and scheduling is logically partitioned into several levels, depending on the problem size. As followed in other decomposition-based approaches, the Upper level models are equipped with appropriate abstractions of the lower level constraints. Also from a reactive scheduling point of view, some pro-active measures are embedded into the multi-level structure. The proposed multi-level decomposition scheme is demonstrated on a representative planning and scheduling problem