Studies on Weed Flora Density and Frequency of Species in Organic Anise in Burdur- Tefenni Province

About half anise production of Turkey have been realised in Burdur province. Tefenni, which is an important anise cultivation area of Burdur province, has about 1000 m altitute. This study was carried out at organic anise field in Tefenni, during the growing season (June- July) of anise in 2015 and 2016. The aim of this study is to determine weed species their observation frequency and density in organic anise. As a resut of observations, in 2015, 82 weed species belong to 28 families were identified. 50 species in the fields and around the fields have been grown. However, during 2016 vegetation period 94 weed species belong to 29 families have been detected; 71 species in the fields and 58 species around the fields have grown. In 2015 the Asteraceae (18 sp.), Poaceae (9 sp.), Brassicaceae (7 sp.) and Fabaceae (6 sp.) are the dominant families in the fields. In 2016, Asteraceae (14 sp.), Poaceae (14 sp.), Fabaceae (7 sp.), Apiaceae (6 sp.) were the families with the highest number of the species in the fields. According to the frequency occurence in the fields, Convolvulus arvensis (83%), Cynodon dactylon(58%), Chenopodium album (41%) were the first species in 2015 of year. However, around the fields Lactuca seriola (58%), Centaurea solstitialis (52%), Avena sterilis (47%), Bromus spp. (41%), C. arvensis (41%) have the highest frequency occurance. In the year of 2016, C. arvensis (70%), Ch. album (52%), Chondrilla juncea (41%), Cy. dactylon (37%) have been detected to have the highest frequency occurance in the fields. In the same year, around the fields L. seriola (58%), C. solstitialis (52%) and A. sterilis (47%) were the dominant species