For the purpose of breeding documentation, researchers and breeders kept handwritten records of the breeding history, including parental information and breeding methods. The cultivars were used again as parents for further breeding, and modern cultivars of rice have a wide range of alleles from many generations of parents and ancestors. To understand such a breeding history, it is necessary to ask around for relevant information, which is then usually documented in Excel or Word by multiple breeders or breeding institutes. Here, we constructed RicePedigree, which contains the breeding history of rice based on the documents provided by the Rural Development Administration (RDA) in Korea. We devised a simple method for collecting a breeding history and storing it in a database. RicePedigree is a web-based application on the database that facilitates researchers’ and breeders’ utilization of the breeding history of rice. Based on the query cultivar name, it will return a hierarchical tree of breeding histories and a list of cultivars and breeding lines that contain query cultivars in their breeding histories. This app would be a good way to review and keep track of information about current and future cultivars.

In this study, for reusing the sludge generated in a fine paper mill as fuel, the characteristics of the pellets prepared by mixing auxiliary raw materials such as pulp mill chip rejects, camellia oilseed cake, Sancho pruning remnants, and mulberry pruning remnants were evaluated. The pellet yield decreased as more sludge containing about 50% of the inorganic fillers was mixed with each auxiliary material, but the camellia oilseed cake, unlike the others, was of great help in improving the pellet yield. The Van Krevelen diagram showed that, as more sludge was added to the woody biomass in preparing the pellets, they tended to have a similar elemental composition to that of coal or lignite. The sludge addition to the woody biomass had a negative effect on the calorific value of the pellets, but the lower calorific value of 2400-3000 kcal/kg was acquired even when more than 50% of sludge was added. The sludge pellets containing the camellia oilseed cake had a faster ignition point than those mixed with the other woody biomass, but the flame duration was shorter. This study showed that the sludge from fine paper mills containing about 50% of cellulose fibers could be used to produce economical solid fuels if mixed with other woody biomass in an appropriate ratio.