THE DYNAMICS OF THE BIRDS’FOOT TREFOIL THRIPS (ODONTOTHRIPS LOTI HAL.) POPULATIONS IN THE CONDITIONS OF THE S.D. TIMIŞOARA PUBLISHEDAna Maria Badea, Ioan Pălăgeşiu, Ioana Grozea
An important aspect at the production of birds – foot trefoil seed, besides the insurance of favourable pedo-climatic conditions was the resistance of that plant to the diseases and pests. One of the most important pests, which produced the biggest damage is the birds’foot trefoil thrips (Odontothrips loti Hal.). Although mentioned in the specific literature, that pest was a little studied in our country and in that context, the paper emphasized the ones experimental data concerning the dynamics of the birds – foot trefoil thrips, adults and larvae. The entomological material, which constituted the object of this study, was collected from one agro ecosystem, at the Didactic Station from Timişoara. The experimentation was placed after the standard method according to the specific literature indications, and the samples were collected with the help of metrical frame of 0.5/0.5 m. The collected insects were prepared, determined and preserved in the Entomology Laboratory of the Agricultural University from Timişoara. Through the monitorizations, which tacked place from 48 hours to 48 hours, resulted that the first adults signal was registered in the second decade of the June month. The biggest number of the catch adults was registered in the date of 28.06.2006, 42 samples, and the biggest number of collected larvae was registered in the date of 10.07.2006, 13 samples. The last captures were registered in the second decade of the July month. The knowledge of the dynamics characteristics of the thrips populations contributes to the establishment of the best moment of applying the treatments concerning the integrated controlling of the mother tree birds – foot trefoil pest.
birds’ foot trefoil; populations; dynamics; Odontothrips loti