Širenjem kukuruzne zlatice Diabrotica virgifera virgifera LeConte područjem kontinentalne Hrvatske ugrožena je proizvodnja kukuruza. Rad je imao za cilj utvrditi dinamiku leta i visinu populacije u poljima ponovljene sjetve i prve godine kukuruza praćenu Pherocon AM (PhAM) žutim pločama i feromonskim mamcima tijekom 2007. godine na području Moslavine i temeljem procijenjene visine populacije procijeniti rizik za ponovljenu sjetvu. U istraživanje je bilo uključeno 8 polja, 4 polja ponovljene sjetve kukuruza i 4 polja prvi puta sjetve kukuruza. U 3 polja ponovljene sjetve i 3 polja prve godine kukuruza postavljene su PhAM žute ploče. U jedno polje ponovljene sjetve i jedno polje prve godine kukuruza postavljen je feromonski mamac. Let kukuruzne zlatice u 2007. godini na području Moslavine je trajao kratko. Uzrok tome visoke su temperature zraka zabilježene tijekom 2007. godine, a uzrokovale su brži razvoj pojedinih razvojnih stadija. Utvrđeno je da je populacija zlatica na većini polja bila niska i da su maksimalni tjedni ulovi bili 1/zlatica/PhAM/7dana što je niska gustoća populacije štetnika, ispod razine ekonomskog praga tolerantnosti. Maksimalni ulovi zabilježeni su u srpnju. Na jednom polju ponovljene sjetve zabilježen je ulov od 45.66 zlatica/PhAM/7dana što je iznad praga tolerantnosti. Na tom polju utvrđen je rizik od štete za ponovljenu sjetvu kukuruza u 2008. godini. Niti na jednom polju nisu zabilježene štete od ličinke. Na feromonskim mamcima zabilježen je visok ulov usprkos kratkom periodu praćenja, što govori o visokoj brojnosti kukuruzne zlatice na području na kojem je proveden monitoring.Spreading of the Western Corn Rootworm, Diabrotica virgifera virgifera LeConte (WCR) all over the continental part of Croatia is endangering the maize production. This investigation was aimed at finding out of flight dynamics and WCR population in the fields of continuous sowing and the first year of maize sowing accompanied by PhAM yellow sticky traps and pheromone traps during 2007, in the Moslavina region and to asses the risk for maize if it will be coninuously sown on investigated fields. The research included eight fields, four fields of the continuous maize sowing and four fields
of the first corn sowing. In three fields continuous maize fields and three first year maize fields, yellow sticky traps (Pherocon AM- PhAM) were placed. Into one continuous and one first year maize field the pheromone traps were placed. The flight of WCR in 2007 in Moslavina region was very short. This was the consequence of the specific climatic conditions in spring of 2007. High temperature sin spring caused early development of larvae. The population was low on majority of investigated fields. The maximum weekly capture amounted to 1 speciman/PhAM trap/7 days which is rather low pests population, below the economic threshold level. The maximum weakly captures were recorded in July. In one continuous maize field the maximum weekly WCR occurrence amounted to 45.66 specimens/PhAM trap/7 days which is above the economic threshold level. In this field the risk against damage was established in the continuous maize sowing in 2008. Larval damage were not recorded. High capture was recorded on pheromone traps inspite of very short monitoring period. This implicates high population level in the whole area where the investigation was carried out
