Thar Desert are good as fencing material. Its roots also encourage "nitrogen" fixation, which produces higher crop yields. "Tecomella undulata" is one more tree species, locally known as Rohida, which is found in Thar Desert regions of northwest and western India. It is another important medium-sized tree of great use in Agroforestry, that produces quality timber and is the main source of timber amongst the indigenous tree species of desert regions. The trade name of the tree species is Desert teak or Marwar teak. "Tecomella undulata" is mainly used as a source of timber. Its wood is strong, tough and durable. It
Thar Desert was conceived to halt spreading of the desert to fertile areas. There are few local tree species suitable for planting in the desert, which are slow growing. Therefore, exotic tree species were introduced for plantation. Many species of Eucalyptus, Acacia, Cassia and other genera from Israel, Australia, US, Russia, Zimbabwe, Chile, Peru and Sudan have been tried in Thar Desert. "Acacia tortilis" has proved to be the most promising species for desert afforestation and the jojoba is another promising species of economic value found suitable for planting in these areas. There are several protected areas in the Thar Desert. Stretches