Naslov
Impact of oilseed rape crop management systems on the spatial distribution of Brassicogethes aeneus (Fabricius 1775): implications for Integrated pest management

Autori
Gotlin Čuljak, Tanja ; Pernar, Renata ; Juran, Ivan ; Ančić, Mario ; Bažok, Renata

Izvornik
Crop protection (0261-2194) 89 (2016); 129-138

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
oilseed rape ; turnip rape ; pollen beetle ; Brassicogethes aeneus ; spatial distribution ; geographic information system

Sažetak
The pollen beetle is one of the most important oilseed rape pests in the entire breeding area of this crop. If no control measures are conducted, this pest could cause greater than a 50 % reduction in yield. The over-use of insecticides (especially pyrethroids) to control the pollen beetle has led to the development of resistance. Thus, alternative control strategies are required. A field trial with three experimental fields with different contributions of turnip rape as a trap crop was established during the growth season of 2013 to 2014. A grid of GPS points was established on each field. Pollen beetle abundance was recorded at each GPS point by beating into trays, and damage was assessed by dissection of buds from terminal raceme. Data analysis was performed by two-way analysis of variance (ANOVA) and the appearance of pollen beetle adults was processed in a geographic information system (GIS). Statistically significant differences were found in terms of the density of the pollen beetle population between trap crop plants and oilseed rape plants. Control thresholds on each oilseed rape field were not exceeded, whereas the density of the pollen beetle population on trap crop plants was increased by up to 40 times, regardless of the contribution of trap crop plants. The data indicate that support systems should use sampling strategies that incorporate spatial information to model crop loss more accurately and that there may be the potential for spatially targeted applications of insecticides to optimize the influence of biocontrol agents in oilseed rape.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA