Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
This reading material published by the Department of Horticulture of the Iowa State University provides information on the principal environmental requirements for plant growth.
ILES, J. (2001): Requirements for Plant Growth. Ames: Department of Horticulture Iowa State University URL [Accessed: 17.04.2012]