Effect of harvest date and cultivar on Cichorium intybus yield components in north Italy

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• 作者：Amaducci ; Stefano ; Pritoni ; Giuseppe
• 关键词：Cichorium intybus ; Harvest date ; Yield components ; Inulin
• 刊名：Industrial Crops and Products
• 出版年：1998
• 出版时间：January, 1998
• 年：1998
• 卷：7
• 期：2-3
• 页码：345-349
• 全文大小：330 K

文摘

Chicory is considered one of the most important sources of inulin either for the high root yield potential or for the high root sugar content. This crop had never been grown in Italy before for inulin production, consequently information on the suitability of this crop to our environment is not available. In 1993 and 1994 field trials were conducted to determine the possibility of root chicory cultivation in north Italy, in relation to climatic and soil conditions and to the pre-existent crop rotations. In a 2 year experiment five cultivars (Orchies, Cassel, Bergues, Hicor and Tilda) were tested at two harvest times. Some parameters of each cultivar at each harvest time were analysed: Plant population, dry matter, ash, glucose, sucrose, inulin, fructose, total fructose (from inulin hydrolysis), length and diameter of the root. Cultivars, harvest times and their interaction significantly affected some yield components. Passing from the early harvest to the late harvest root yield increased of about 16 % and total fructose content decreased by 12 % . Total fructose production varied from 9.2 t ha⁻¹, in the early harvest, to 9.4 t ha⁻¹ in the later one; in Cassel, the cultivar which obtained the highest root production, total fructose varied from 9.7 to 10.1 t ha⁻¹. Interaction related to different characteristics were discussed. The main problems found in the experiment were: Low emergence of the crop in clay soil and difficult eradication especially in late harvests.