Effects of Amino acid spraying and vermicompost application on some morphological traits and flower yield of Chamomile

In order to study the effects of vermicompost and amino acids application on flower yield of Chamomile (Matricaria chamomilla L.)، an experiment was carried out in the Alborz Medicinal Plant Research Station at Karaj region. The experiment design was factorial based on RCBD with three replications. Treatments were vermicompost in 5 levels (0، 5، 10، 15 and 20 ton/ha) and amino acid spraying in 3 levels (at budding stag، at flowering stage، at budding stag + at flowering stage). Results of this investigation showed that days to budding and flowering are not affected by amino acid spraying. But، vermicompost had significant effect on days to flowering. The highest plant height (41. 8 cm)، fresh flower yield (3335. 7 kg/ha) and dried flower yield (653. 8 kg/ha) were obtained by using 20 tons vermicompost per hectare. Maximum yield were obtained by amino acid spraying in 2 times (at budding stag + at flowering stage). According to the interaction effects of the treatments، applying of 15 ton/ha vermicompost and spraying amino acids in 2 times (at budding stag + at flowering stage) caused highest fresh and dried flower yield.