DETERMINING THE MOST APPROPRIATE HARVEST DATE FOR CELERY, PARSLEY AND CHAMOMILE. IT CONTAINS OF VOLATILE OIL AND TOTAL PHENOLS

Abstract

This Experiment was carried out in the fields of College of Agricultural Engineering Sciences, University of Baghdad during the autumn season 2014-2015 . Plants seeds (celery, parsley and Chamomile) planted in dishes, Seedlings transferred after month when seeds germination .The seedlings were planted in the field on lines between 75 cm and 40 cm between one plant and another . This experiment was carried out using the design RCBD on three replicates. The first factor represents different plants, While The second factor represents harvest dates .The results were showed that The harvest of leaves celery at three o'clock in the afternoon gave the highest percentage of volatile oil and penol, which was 0.75 ml / 100 g and 5 mg/100g. Parsley gave highest level of volatile oil at 6 pm, which was 0.5 ml / 100 g, While the harvest time at three in the morning produced the highest percentage of phenols, which reached 3.7 mg/100g. The amount of volatile oil in the flowers of chamomile plant increased when harvesting at 12 AM, which gave the highest amount of 0.063 ml / 100 g compared to the date of harvest at three in the afternoon, which produced the lowest amount of volatile oil amounted to 0.026 ml / 100 g. and harvest time at 9 pm in the content of total phenols