جستجوی مقالات مرتبط با کلیدواژه "مرگ ومیر" در نشریات گروه "گیاهپزشکی"

Aphids are among the most important economic pests and vectors of many plant pathogens in horticultural, agricultural and greenhouse crops in world. In this study, the effect of ethanolic extract of nettle Urtica dioica L. (Rosales: Urticaceae), Palizin® soap and Firooz® baby shampoo on three species of aphids (black alfalfa aphid, Aphis fabae (Scopoli), wheat poison aphid, Schizaphis graminum (Rondani), and cowpea aphid, Aphis craccivora (Koch)) were examined. Several experiments included evaluation of the birth percentage of adult insects, total mortality and mortality of 5-6- and 1-2-day-old nymphs and also adult insects treated with the above compounds. Hosts of these pests in all steps of this study were included wheat plants for poisonous wheat aphids, alfalfa for black alfalfa aphids and beans for black bean aphids. The results of this study showed that ethanolic extract of nettle has a significant effect on pest mortality. The result showed the ethanolic extract of nettle has a significant effect with the means ± SE percentage of mortality (90.50±3.76) and (87.78±3.92) in wheat poison aphid, (74.00±9.30) and (79.00±5.76) in black alfalfa aphid and (62.00±9.20) and (64.50±4.56) in cowpea aphid on 1-2-and 5-6- day-old nymphs, respectively, in comparing to control. So, according to the results, ethanolic extract of nettle has a significant effect on the control of these pests and it can have capacities that suggest conducting further studies in the management of Aphids.