Insecticidal Effect of Three Different Plant Extracts on Potato Tuber Moth[Phthorimaea operculella Zeller(Lep.:Gelechiidae)]

Potato tuber moth[Phthorimae operculella Zeller(Lep.:Gelechiidae)]is the most important insect causing damage of potatoes.It also causes significant damage to tomato and eggplant.The application of plant extracts to control insects is an effective alternative.In this study,the efficacy of extracts from Leptospermum petersonii Bailey(Myrtaceae),Achillea wilhelmsii C.Koch(Asteraceae)and Tanacetum parthenium L.(Asteraceae)on potato tuber moth using two different methods was investigated.Bioassays were used to determine the effect of varying concentrations(for L.petersonii 0.05%,0.1%,0.3%and 0.4%,for A.wilhelmsii and T.parthenium 1%,3%,6%and 12%)of extracts.Experiments were carried out using potato tuber of Solanum tuberosum L.Fourth instar larva of about were used in tuber dipping and larvae dipping methods.In tuber dipping method,the highest mortality(100%)occurred at concentration of 0.4%while the smallest mortality was at 0.05%the extracts of L.petersonii.It was determined that the extract of A.wilhelmsii and T.parthenium had the highest mortality at the highest concentration 85%and 90%respectively.In larva dipping method,the extracts of L.petersonii.A.wilhelmsii and T.parthenium showed the highest mortality at the highest concentrations 100%,82%and 87%respectively.The research was undertaken under laboratory conditions at the Plant Protection Central Research Institute.

Ethanol Extraction of Hyoscyamus niger and Hypericum calycinum Evaluated for Acaricidal Activity against Tetranychus urticae Koch （Acari： Tetranychidae）

Hyoscyamus 尼日尔 L。(Solanaceae ) 并且 Hypericum calycinum L。(Hypericaceae ) 在 flowering 阶段期间在土耳其从二省囊和安卡拉是镇定的。从 H 获得的摘录。尼日尔和 H。calycinum 作为 acaricidal 杀虫剂对 two-spotted 螨被测试。生物鉴定实验也就是用二个不同方法在实验室条件下面被执行，叶圆盘蘸并且直接的叶喷洒。Two-spotted 螨用 Phaseolus vulgaris L 在 insectary 被饲养。(Fabaceae ) 。在蘸方法的叶， H。尼日尔摘录为 87.13% 的幼虫并且为 81.66% 的成年人导致了有效调整死亡。为 H。calycinum 为幼虫和成年人的调整死亡在最高的集中分别地是 77.77% 和 85.97% 。在幼虫的舞台， LC 50 价值是分别地蘸并且喷洒方法的 5.47 w/v 和 3.32 w/v。另外，成年舞台， LC 50 价值在两个方法是 1.17 w/v 和 3.56 w/v，这被决定。为喷洒方法的叶。H。尼日尔导致了一调整证明对幼虫和成年人死亡率的效果分别地是 95% 和 91% 。然而， H。calycinum 死亡百分比在 12% 集中是 80% 和 87% ，与 LC 50 在蘸的 9.62 w/v 和 2.13 w/v 的价值方法。在除了鸡蛋上的死亡效果的这研究，复制也被调查。每集中证明对待的女性与未经治疗的女性相比生了更少的鸡蛋。