Dill belongs to the celery family Apiaceae. It is an annual and a medicinal herb that is also used in cuisine. In our graduation thesis we wanted to observe the growth and development of large number of plants of the same population of dill. The study aimed at obtaining the seed (fruit) and at determination of essential oil contents by mean of water distillation. On the laboratory field of the Biotechnical Faculty of University of Ljubljana seedlings were planted and seeds (fruits) seeded of one population of common dill (Anethum graveolens L.) on three billets (assigned as A, B and C) in 2019. We put wood chips on all three billets. We observed phenological phases of the herb from the beginning to the end of growth period. The herbs were evaluated at full flowering time as a whole, its leaves and umbels. We made notes of all observed and measured results and then we compared them. Dill plants that were seeded had better growth than those planted as seedlings. Plants’ growth was completed after three months - when the seeds in the umbels turned brown. In this stage the harvest has been done. In the laboratory, seeds (fruits) were separated from umbels and dried in the dryer. We ground the fruits and made essential oil in twelve replications. The average content (volume) of essential oil in samples A was 26,5 ml/kg drug, in samples B the average content of essential oil was 54,0 ml/kg drug (maximum) and in samples C the average content of essential oil was 28,8 ml/kg drug. The main ingredient in dill essential oil is carvone. It is present in an average of 50,3 %. The second ingredient is limonene, which is present in the essential oil of 47,8 %.

Navadni koper spada v družino kobulnic (Apiaceae), je enoletnica in je zdravilna rastlina, ki se uporablja tudi v živilih. Z diplomskim delom smo želeli na večjem številu rastlin enake populacije kopra opazovati rast in razvoj rastlin na polju. Nato pridobiti plodove in v njih določiti vsebnost eteričnega olja s pomočjo vodne destilacije ter s plinsko kromatografijo določiti sestavo. Na laboratorijskem polju Biotehniške fakultete v Ljubljani smo v letu 2019 na tri gredice (oznake A, B in C) posadili sadike in posejali seme ene populacije navadnega kopra (Anethum graveolens L). Na vse gredice smo dali zastirko iz sekancev. Opazovali smo fenološke faze pri rastlinah od začetka do konca rasti. Vrednotili smo cele rastline v času polnega cvetenja ter posebej liste in kobule. Opazovane in izmerjene podatke smo zapisali, obdelali in jih primerjali. Rastline kopra, posejane s semenom, so imele bujnejšo rast od tistih, ki smo jih posadili kot sadike. Rast rastlin je bila zaključena po treh mesecih, ko so semena (plodovi) na kobulih porjavela. Takrat smo rastline poželi. V laboratoriju smo ločili plodove od kobulov ter jih posušili v sušilnici. Plodove smo nato zmleli in izdelali eterično olje v dvanajstih ponovitvah. Povprečna vsebnost (volumen) eteričnega olja pri vzorcih A je bila 26,5 ml/kg droge, pri vzorcih B 54,0 ml/kg droge (največja) ter pri vzorcih C 28,8 ml/kg droge. V eteričnem olju naših vzorcev smo v povprečju določili največ karvona (50,3 %) in nekaj manj limonena (47,8 %).