Distribution and Recource Evaluation of the Tribulus Terrestris L.—Maltese Cross (Zygophyllaceae) in Populations from South Bulgaria

ABSTRACT

During the vegetation season june—September 2009 a investigation on the distribution and resource evaluation of the 55 Tribulus terrestris populations in South Bulgaria has been organized. They belongs to the 6 florobotanical regions of the country. As an element of the wild flora, and in the same time as a weed, that species inhabits abandoned places, vineyards, agricultural terrains, coastal and inland sands from 0 to 800 m.s.l.a. The populations developed on slightly humid, with good aeration soils, formed the most highest green mass yields in the limits of 5.25 kg to 89 tons. per dk. The total amount of the recourses from the investigated territory can be evaluated in the limits of some 615 tons fresh mass.

Keywords:

• Tribulus terrestris L. recourse evaluation
• distribution
• South Bulgaria