Potatoes are one of the most important food products in world and considered a main human nutrition sources source. Potato tuber moth (Phthorimaea operculella Zeller (PTM) (Lepidoptera: Gelechiidae)) causes remarkable economic losses to crop, both field under storage conditions In this study, insecticidal efficiency following bioagents: Brevibacillus brevis (FD-1), Bacillus atrophaeus (FD 17), ...

The life cycle, within-field distribution, crop damage and impact of natural enemies of the potato tuber moth, Phthorimaea operculella (Zeller) were investigated in two potato cropping systems. The two systems differed in soil type (sandy vs. loess) which in turn affected the choice of cultivars, irrigation programme, insecticide application method (ground vs. aerial), and planting and harvest ...

Various physical and chemical properties of host plants influence insect larval performance and subsequent adult fitness. Tomato plants are relatively new hosts to the potato tuber moth, Phthorimaea operculella (Zeller), with the fruit being its preferred feeding site. However, it is unclear how the biochemical and physical properties of tomato fruits relate to potato tuber moth performance. Si...

In this study, the insecticidal activity of native diatomaceous earth (DE) Turco004 was tested against pupae Potato tuber moth, [Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)] in laboratory conditions. bioassays were used dust formulation and applied four concentrations (2.5, 5, 10 20g/m2) DE. Pupa weights number adults emerging from recorded after 24, 48, 72, 96, 120, 144 168 hou...

the potato tuber moth (ptm), phthorimaea operculella zeller (lepidoptera: gelechiidae), is an important pest of potato and other solanaceous plants. it is cosmopolite and oligophage that exists in most countries where potatoes are grown. because of chemical treatment adverse effects, there is a necessity to find safe alternatives to synthetic insecticides. so, medicinal plants are promising sin...

laboratory experiments were conducted to understand the influence of host-finding behaviour of apanteles subandinus blanchard and orgilus lepidus muesebeck, two endoparasitoids of the potato tuber moth (ptm) phthorimaea operculella zeller (lepidop-tera: gelechiidae), in a successful biological control of the pest. responses of the two parasitoids to their host and to three host plants of the pt...

Phthorimaea operculella is one of the most important pests causing damage to stored potatoes. In this work, effect temperature (at 10, 20 and 30 °C) on predation pest eggs by Blattisocius tarsalis was studied in laboratory. addition, three predatory release rates two densities under microcosm conditions. The results showed that B. maintains its capacity at low temperatures (10 °C), obtaining an...