during a two-year (2004-2005) survey of alfalfa aphids and their natural enemies in isfahan, a total of four aphid species and 58 species of their natural enemies comprised of 45 predatory species, 11 parasitoid species and two species of parasitic mites were collected and identified. moreover, five hyperparasitoid species were collected. on each sampling date, six 20-sweep samples were taken u...

The within-plant distribution of soybean aphid, Aphis glycines Matsumura has been attributed to various causes, yet it is unclear which factor or combination of factors most influence aphid within-plant distribution. Understanding soybean aphid distribution within the soybean canopy is important both in developing sampling programs and in evaluating injury. Because natural enemies have the pote...

Seed treatment application of chemical insecticides is getting popularity in the management insect-pest population. The present investigation was conducted to study bio-efficacy different insecticides, widely used against major mustard crop. A variety Bio-902 sown twenty-seven plots 2× 2 m2 at agronomy farm Sri Karan Narendra College Agriculture, Jobner, India during Rabi season 2020-21. total ...

Aphidius transcaspicus Telenga, a mealy plum aphid (Hyalopterus pruni Geoffroy) parasitoid from the Mediterranean, was recently introduced into Hawaii for control of invasive aphids. Under laboratory conditions the parasitoid successfully attacked several important aphid pests in Hawaii, including the melon aphid Aphis gossypii Glover, the banana aphid Pentalonia nigronervosa (Coquerel), the gr...

In the north central United States, populations of the exotic soybean aphid, Aphis glycinesMatsumura (Hemiptera: Aphididae), are highly variable across space, complicating effective aphid management. In this study we examined relationships of plant nutrients, landscape structure, andnatural enemieswith soybeanaphid abundance across Iowa,Michigan,Minnesota, andWisconsin, representing the range o...

The present research study was carried out applying the Randomised Block Design (RBD) approach in three replications during rabi season of 2022–2023 at Central Research farm, NAI, SHUATS, Prayagraj. Results revealed that, among all treatments combination insecticide Metarhizium anisopliae (T7) recorded lowest reduction percent aphid (47.94%), followed by Nisco MECH 333(T6) (53.00%), 333 + Neem ...

The soybean aphid, Aphis glycines was first observed in Wisconsin during the 2000 growing season. Since its introduction many commercial soybean fields have exhibited high levels of aphid activity and yield losses have been widely reported from aphid feeding damage. Field observations of heavy soybean aphid infestations have suggested a potential link between potassium deficiency in soybeans an...