Uticaj tipa tla na brojnost populacije zlatice kukuruza (Diabrotica virgifera virgifera Le Conte)
2011
Nedžad Karić | Husnija Festić
Western Corn Rootworm (Diabrotica virgifera virgifera Le Conte) is a corn pest originating from Central America. It was discovered in Europe for the first time in 1992, when the first damage was registered. Larvaes do most of the damage on the root by feeding on the fine root hairs and burrowing into root tips of the corn plant. The development of larvae takes about a month when it intensely moves in search of food. Movement of larvae largely depends on soil characteristics, where the soil texture is of crucial importance. Besides larvae, there are also eggs and pupae whose development is influenced by soil characteristics as well. Given the great soil diversity in Bosnia and Herzegovina, and representation of different soil types in maize growing areas, this has become the focus of our research. The trial was set up at eight locations in north-eastern Bosnia. The soil type and monoculture type of corn growing were used as the main criteria for site selection. Represented types of soil range from very favorable to extremely unfavorable for the cultivation of corn and development of pests. The results support the assumption about dominant influence of soil on the developmental stages of pests in the soil. Differences determined in population density in some locations showed a significant effect of soil type and year. Certain types of soil are affected differently depending on weather conditions in years of research. There were various interactions between the soil type and year as research factors. Particularly unfavorable for the development and growth in number of beetles were the types of soil with higher clay content and poor water-air regime. Given that prevailing soil types in Bosnia and Herzegovina are not favorable for the development of pests, and due to varying weather conditions, the population size is still below the economically detrimental threshold.
显示更多 [+] 显示较少 [-]