Theresponses and impacts ofÞve insect species that feedonCentaureadiffusaLamarck, diffuse knapweed, to soil nitrogen and phosphorus additions were studied in grasslands east of the ColoradoFrontRange.Wepredicted that fertilizationwasunlikely tohave adirect effect onherbivory but that if the insects preferentially select vigorous plants, increased tissue nitrogen, plant density, or plant mass re...

Nurseries are one of the essential agronomic activities in oil palm cultivation. Oil seedlings cultivated on a large scale, different from nurseries for other plantation commodities. The nursery expanse comprises various biotic components, which is Arthropods. This study aims to determine Artropod community and its function nurseries. research was carried out at two nurseries, Nagari Gunung Med...

Abstract Antioxidant enzymatic activity and soluble protein content in Robinia pseudoacacia L. (black locust), invasive tree Europe, plants were determined under feeding conditions of the caterpillars Parectopa robiniella Clemens, 1863, miner trees three (I, II, III) age groups (5–10, 15–25, 40 years). Biochemical analysis data showed significant differences between reference experimental leaf ...

BACKGROUND: Significant damage to barley crops in the southern regions of Russian Federation is caused by greenbug Schizaphis graminum Rondani. Cultivation resistant varieties a cheap, efficient and environmentally friendly way combat phytophage. The specificity relations between S. shown, that determines need broad genetic diversity cultivated varieties.
 AIM: study effectiveness control ...

The spread and outbreaks of phytophagous pests are often associated with global warming. In addition to economic interest, these species may be interest in terms biological indication climate changes. this context, we considered the locust digitate leafminer Parectopa robiniella Clemens, 1863 (Lepidoptera: Gracillariidae). This phytophage was first discovered Europe 1970 near Milano Italy. Sinc...