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In the present research, the chemical composition of aerial parts of cultivated citral chemotype of Thymus pannonicus All. (Lamiaceae), growing at different soil conditions was studied. Two plant lineages were unfertilized or treated using either nitrogen or phosphorus fertilizers at different concentration levels. Essential oil (EO) content, EO composition, and composition of hydromethanol extracts (MEs) were compared to the results obtained for wild growing plants in order to evaluate the potential of T. pannonicus for its industrial production. EO content (%, V/m) in cultivated samples varied between 0.32-0.75% and 0.62–1.05% within two examined lineages, whereas the herbs from the natural habitat contained 0.49–1.29% of EO. GC-FID/MS analysis showed that citral, i.e. mixture of isomers geranial and neral, was the most abundant constituent in all EOs (51.90–81.96%). HPLC analysis revealed that total caffeic acid derivatives, with rosmarinic acid (RA) as the most abundant compound in all extracts, as well as total apigenin glycosides contents were significantly higher in the extracts originating from the cultivated herbs (112.15–184.94 mg/g and 5.08–15.29 mg/g, respectively), in comparison to the extracts of the herbs from the natural habitats (67.61–98.75 mg/g and 1.17–1.32 mg/g). In general, the composition of cultivated herbs varied less than that of samples originating from natural habitats, indicating that controlled cultivation of citral chemotype of T. pannonicus can provide herbal drug with favourable characteristics. Only minor differences were observed between cultivated samples treated with different fertilizers.

In organic plant production it is necessary to establish isolation buffer between organic and conventional production areas. Organic demo-field was established towards the end of 2008 in a part of Institute 'Tamis' Pancevo experimental field. The perennial fennel (Foeniculum vulgare P. Mill.) was planted as isolation buffer. Phenological observations were performed and variable costs monitored in the foundation year of 2009 and in the following 2010. The production costs, otherwise high in organic production, were not increased. The fennel production achieved visibly better financial results as compared to sunflower and maize production, which are the plant species most often used as isolation buffers. The product can be processed to manufacture bio-preparation that can also be used in organic production. Also, fennel is an entomophilic plant species, has a long blooming phase, attracts useful insects, pollinators and predators, aiding biodiversity and bio-control maintenance and improvement in agroecosystems.

Intensively researching different populations of elecampane, we are able to present the results of yield achieved during three years' microexperiments (2001, 2002, 2003) realized in non-watering field crop production. Comparing the results of yield, it was concluded that all five populations had higher yield, both fresh and dry elecampane root mass, compared to standard cultivars called "Domaca". The highest yield of 28,617 kg ha"1 of fresh, and 8,301 kg ha"1 of dry root had the population "NS", and it was more than standard. Considerable results were achieved by the population "SZ" (77 % higher yield of fresh mass, and 70 % of dry mass), also the population "BM " (62 % higher yield of fresh mass, and 84 % of dry mass). The lowest yield had the population "SG" and standard cultivars "Domaca", mostly because of late planting in the second study year.

The results of the two-year comparative research of qualitative and quantitative traits of marigold seed of different genotypes in regard to the standard cultivar were analyzed. The highest yield of seed in both study years was registered in genotype "King orange", and the lowest in genotype "R". Concerning the quality of seed, that is, germination energy and total germination, the best results were established for genotype "King orange" and the poorest for genotype "R" in both study years. The highest absolute mass was registered in domestic cultivar "Domestic orange". Climatic conditions had great influence on yield and quality of marigold seed. In the first study year, with 2.5 times higher water sediment during the vegetation period, seed yield in all genotypes was higher compared to the second study year. Also, absolute mass of seed of all genotypes was higher in the first study year. However, germination energy and total germination for all genotypes was better in the second year, when the sum of temperatures during the vegetation period was 3758°C compared to the first year when the sum of temperatures recorded was 3523°C. Analizirani su rezultati dvogodišnjeg uporedog istraživanja kvalitativnih i kvantitativnih osobina semena više genotipova nevena u odnosu na standardnu sortu. Najveći prinos semena u obe eksperimentalne godine zabeležen je kod genotipa ²King orange² a najmanji kod genotipa ²R². U pogledu kvaliteta semena, odnosno energije klijanja i ukupnog klijanja, najbolje rezultate dao je genotip ²King orange² a najslabije genotip ²R² u obe godine istraživanja. Najveću apsolutnu masu imalo je seme standardne sorte ²Domaći oranž². Klimatski uslovi imali su velikog uticaja na prinos i kvalitet semena nevena. Tako je u prvoj godini istraživanja, kada je u vegetacionom periodu bilo 2,5 puta više vodenog taloga, prinos semena svih genotipova bio veći u odnosu na drugu godinu. Takođe, i apsolutna masa semena svih genotipova bila je veća u prvoj godini istraživanja. Međutim, energija klijanja i ukupno klijanje bili su kod svih genotipova bolji u drugoj godini istraživanja kada je suma temperatura u vegetacionom periodu bila 3758°C, u odnosu na prvu godinu istraživanja kada je ista suma iznosila 3523°C.