In this article I'm going to explain the use of the analytic functions RANK, DENSE_RANK and ROW_NUMBER to rank the results of your query.
Crop diversification refers to the addition of new crops or cropping systems to agricultural production on a particular farm taking into account the different returns from value-added crops with complementary marketing opportunities. Major driving forces for crop diversification include: â¢ Increasing income on small farm holdings
The most acidifyingforms of agricultural production are operationssuch as lucerne hay cutting. For instance theremoval of one tonne of lucerne hay requires 70 kgof lime to neutralise the resulting acidity. Leaching of nitrogen.Leaching of nitrogen inthe nitrate form is a very important factor in soilacidity.