coursework. n. 1. (Education) written or oral work completed by a student within a given period, which is assessed as an integral part of an educational course.
More than the infusion of population, colonist John Rolfe's discovery of a profitable cash crop-tobacco-sealed the fate of the Virginia colony. Economically, tobacco became to the Chesapeake what sugar was to West Indies and silver was to Mexico. However, tobacco required a great deal of labor to cultivate.
are better nitrogen competitors than plants, cash crops could be deficient in nitrogen, particularly if the nitrogen uptake period by crop plants falls into a period of high microbial activity. Therefore, when cover crops which produce large amounts of biomass with high C:N ratios are used, the subsequent cash crop would require supplemental nitrogen during growth to meet crop yield potentials. Other factors that could affect the ability of microorganisms to break