The aim of this study was to investigate the ability of Lemna minor for Toluidine Blue (TB) removal. Influence of the initial concentration over the removal process was considered. Experimental data have been analyzed using Langmuir, Freundlich, Dubinin-Radushkevich (D-R), and Elovich isotherm models. In addition, several kinetic models, pseudo-first-, pseudo-second-order, intraparticle and film diffusion models were considered. Langmuir and Freundlich isotherm suggested a favorable adsorption of TB by Lemna minor plants. From the D-R the mean free energy was calculated to be 11.18 kJ/mol, which indicates that TB adsorption was characterized by a chemisorption process. Kinetic studies showed that liquid film diffusion plays an important role during the process. Adsorption capacities of up to 26.69 mg/g and a high capacity of adaptation indicated that phytoremediation using Lemna minor could be a valuable alternative for dyes removal from wastewaters.

Based on the entomological research at the ARDS Turda, the paper presents new research on pest abundance in wheat crops in relation to the climate warming in Transylvania and the adequate integrated pest control methods under different cultural soil technologies: classical (ploughing) and conservative (no tillage), in open ield and in agroforestry belts agroecosystems.During 2007-2014, the study has revealed data on species composition and dynamics. Species determination has been achieved based on the samples performed every 10 days, by 100 double sweep-net catches. Were pointed out major outbreaks of abundance of thrips (Haplothrips tritici), as eudominant species; of wheat lies (Chloropidae and Anthomyiidae); stem lea beetles (Chaetocnema aridula); lea hoppers (Javesella pellucida, Psammotettix alienus etc.) and aphids (Sitobion avenae etc.), as dominant groups; cereal bugs (Eurygaster maura, Aelia acuminata); Coleoptera: Agriotes, Zabrus tenebrioides etc. Due to aridization and climate warming, the critical attack moments have been recorded 3-4 weeks earlier and overlapped. IPM recommends special attention to preventing measures for lies, leafhoppers, aphids, etc., which shows a high biological potential: optimal sowing time, agrotechnical methods, seed treatment with systemic insecticide and complex plant protection measures. The results proved the importance of insecticide applications: at the end of tillering phase (13-33 DC stage) and at the lag-leaf appearance and ear emergence in 45-59 DC stage. At the fi rst treatment, cereal fl ies, fl eas, leafhoppers, thrips, bugs etc. are controlled simultaneously, by recommending the shock (pyrethroids) or systemic insecticides (neonicotinoid etc.). At the second treatment, the ear pests are controlled simultaneously and it is recommended the shock insecticides (pyrethroids etc.) with reduced effects on the useful entomophagous. The IPM is a major section of successive soil no tillage technologies, comprising a special pest control strategy, with insecticides application on seed treatment and in 2-3 successive treatments in vegetation. Entomophagous populations are particularly abundant in open fi eld area, in classic and in soil no tillage technologies. In the farming system with protective agro-forestry belts-favorable for increasing of entomophags species, the research pointed out the ef iciency of biological control, only using the entomophagous natural resources.

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Colorado potato beetle (Leptinotarsa decemlineata) is and will remain the main pest of potato crops. It seeks to combat it, more so as enable transmission of the virus X (PVC) and could reach total causing damage, in an attack early harvest losses are possible in 50 to 80% while a later attack, they can reach up to 30%. This pest developed resistance to a wide range of insecticides, which has enhance management studies determined based on a better and more thorough understanding of the ecology pest. In currently there are different methods based on biological products, various chemicals (pheromones) that causes certain behaviors (in this case aggregation) with efficiency superior, clean, reducing the quantities of toxic chemicals in the cultivation of potatoes, there is not resistance (as happens with insecticides), and thus do not affect consumer health tubers of potatoes. The paper presents results under the program Agral-CEEX from S.C.D.A. Turda during 2006-2008, regarding the use of unconventional biotechnics control or limitation under ETD (Economic Thresholds for Pest ) of the Colorado beetle (Leptinotarsa decemlineata Say.) from the potato crop. This method was tested based on the use of compositions biotechnics pest attraction that obtained at the Institute of Chemistry Cluj-Napoca, which were used as traps for beetle aggregation pheromone in Colorado; two variants were synthesized pheromone of aggregation, V1-PEG and V2 -ExFr. Adults to follow this pest abundance and attack rate (%) in each variant. Pitfalls of both V1-PEG, and in those of V2-ExFr were found near the Colorado beetle, many insects in the same order as proof that these aggregation pheromones are efficiency and can be placed in management integrated control, using this method to potato crop. Also using this method biotechnics -aggregation pheromone- to reduced chemical treatments needed to pest control and protect wildlife be helpful existing default

The important role of entomophagous present in the trophic network of biocenoses, is widely debated in numerous papers. Throughout the vegetation period, field crops are invaded by a host of entomophagous, their role being important in limiting pests. Due to the importance of useful arthropod fauna for limiting wheat pests, during 2016-2017, its monitoring was carried out on the winter wheat culture, in two locations: at Turda, open field and in Bolduţ, field with agroforestry curtains, from ARDS Turda. The entomophagous collection was performed decadally with entomological net, a hundred double threads for each sample, in two variants: untreated with insecticides, and treated with insecticides. The data obtained indicates the fact that in the field with agroforestry curtains, the abundance of entomophagous it was higher, and in the variant where vegetation treatments with insecticides have been applied, the number of entomophagous was lower, compared to the untreated variant.