M. Chaji - Laboratory and Biology Research Center of Birjand Graduate Student of Plant Physiology, Faculty of Science, Ferdowsi University of Mashhad and author Article

Today the adverse effects of Synthetic chemicals such as herbicides on humans and the environment is no secret;and plant sciences technology towards using natural materials. Such as using herb extracts Nerium oleander L. and its effect on physiological function and phenology Echinops orientalis Trautv. plant extracts can be mentionedas alternative to the chemical. Chemical pesticides and herbicides resulted in weed to resistance, and over time increase the number of species. Using The results of this plan, you can avoid the adverse effects of chemicals. As well as biological use of herbal extracts such as N. oleander is of significant economic Synthetic herbicides importance and harmful effects on the biological cycle of nature was reduced. By soaking the leaves and shoots (excluding flowers) N. oleander in solvents, such as alcohol, extract was prepared, which is a very common and its low cost and durability are increased. The use of plant extracts undead and comparison with the type of control, it was observed that N. oleander extract on the phonological, Primary growth E. orientalis affecting and it was somehow inhibit the growth and physiological function. By examining the data obtained and the dry weight of the plants was found that the plant is in vegetative growth of E. orientalis that fields weed wheat .fields, interference is created

Allelopathic, Extraction, Phenology,.Physiologic