Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Incense Route - Desert Cities in the Negev' has mentioned 'Agriculture' in the following places:
Occurrence Sentence Text Source
Vestiges of these works are still visible, and demonstrate the use of the desert for commerce and agriculture.
Contents 1 Location 2 History 2.1 World heritage status 3 Features 3.1 Avdat 3.2 Haluza 3.3 Mamshit 3.4 Shivta 3.5 Fortresses 3.6 Caravanserai 3.7 Agriculture 3.8 Other finds 4 See also 5 References 6 Bibliography
Agriculture[edit]
Agriculture practiced by the Nabateans in the arid desert conditions where the annual precipitation is of the order 100 millimetres (3.9xc2xa0in), is through a well developed irrigation system consisting of hundreds of small dams, channels, cisterns, and reservoirs which collect flood water.
Together they reflect the hugely profitable trade in Frankincense from south Arabia to the Mediterranean, which flourished from the third century BCE until the second century CE, and the way the harsh desert was colonised for agriculture through the use of highly sophisticated irrigation systems.
The towns were supported by extremely sophisticated systems of water collection and irrigation that allowed large-scale agriculture.