Capital budgeting under relational contracting: optimal ranking and duration criteria for schemes of concession, project-financing and publicprivate partnership

Concepts of interacting nutrient and proton cycles, "decoupling " of mineralization and uptake, and the steady state soil solution, developed mainly to assess impacts of acid rain on forests and their catchment waters, are very pertinent to biological agriculture. In particular, they illustrate how decoupling of soil-plant nitrogen cycling also decouples cycling of protons and basic cations (chiefly Ca, Mg, K), and can result in acidification of soil and in loss ofcations as well as of nitrate. In biological agriculture, loss of cations may be more important than loss ofN because there is no equivalent to biological nitrogen fixation to replace them. It is proposed that on-site measurements of pH, EC (electrical conductivity) and nitrate (using semiquantitative nitrate strips) in 1:1 water extracts of soil are convenient tools for on-site monitoring of coupling/decoupling phenomena. Values of pH, nitrate and EC of soil samples taken from a variety of soil types, crops and farming systems are reported and relationships between the variables are examined. Several practical questions examined in the course of the studies provide examples of how the measurements can be of value in biological husbandry. As predicted, there were strong linear relationships between nitrate concentrations and EC for

Title of Dissertation: "Intolerable conduct in a constructive dismissal" Declaration: "I certify that the whole dissertation, unless specifically indicated to the contrary in the text, is my own work. It is submitted as the dissertation component in partial fulfilment of the requirements for the degree of Masters of Law in the Faculty of Law, University ofKwaZulu-Natal, " 2012.

Multi-purpose Soil Geochemical Mapping of Portugal: preliminary results Différentes applications de la cartographie géochimique des sols du Portugal: premiers résultats