Relationship between the yield and quality of green dill and the height of plants
2005
Kmiecik, W | Lisiewska, Z. | Slupski, J.
The structure of dill yield, its phytometric traits and the level of dry matter, volatile oils, chlorophylls, beta-carotene and vitamin C in plants harvested at a height of 20, 30, 40, 50 and 60 cm were compared. Increases in the total and marketable yields and in the yield of different parts of dill plants were commensurate with the increasing size of plants, while the proportion of leaves and its parts in the yield decreased and that of the stem increased. As the size of plants increased, the site of the first leaf setting was virtually unchanged. However, the average diameter of the stem at its base, the number of leaves per plant and the altitude of the first and the last developed leaf increased. The content of dry matter and volatile oils also increased in all the parts with the exception of the stem, where this content did not change or varied only to a small degree. The level of vitamin C systematically decreased in all the parts with the exception of the petiole, where this level was stable. The content of chlorophylls and beta-carotene increased in the leaf and its parts and was fairly stable in the stem, however, it decreased in whole plants. The leaf blade had the greatest content of all the analysed components, a smaller content being found in the whole leaf and whole plant, and the smallest in the petiole and stem
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