Due to the lack of information on influence environmental factors accumulation pyrrolizidine alkaloids and their content in certain species this family Boraginaceae, aim study was assess level aboveground under-ground parts Symphytum asperum Lepech., S. caucasicum M. Bieb., Echium vulgare L., Pulmonaria mollis Wulfen ex Hornem. depending climatic, orographic edaphic conditions. The localization...

Summary Allelopathic effects of different plant allelochemicals have become the focus studies that aim to determine new pesticidal compounds. Plant extracts with chemical compositions can be obtained using methods extraction, whereas dealing allelopathic properties use biotests obtain fast and precise results. Such were undertaken after noticing industrial hemp (Cannabis sativa L.) on surroundi...

Narman district is located at Eastern Anatolia Region of Turkey. Average altitude 1650 m, annual total precipitation about 420 mm. In study area main economic activity animal husbandry and production has made traditional practices, based on rangelands. This carried out to determine honey plants, frequently visited by bees in 20 different locations Narman. Total 56 plant species were determined ...