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Witloof chicory (Cichorium intybus L.) root vernalization by means of exogenously supplied gibberellic acid
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaEndogenous gibberellic acid (GA) is known to play a pivotal role in the vernalization process of plants requiring a cold induction. In order to establish the effect of an exogenous GA application on the vernalization process of chicory roots, GA... -
The influence of exogenous gibberellic acid treatments on the relative pith length of witloof chicory (Cichorium intybus L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaTwo cultivars of witloof chicory (Cichorium intybus L.) were grown in a fertigated sand medium and GA applied at two concentration levels, either as a leaf or a root treatment. The plants were additionally subjected to a chilling treatment, roots... -
Evaluation of witloof chicory cultivars for bolting
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaBolting of witloof chicory (Cichorium intybus L.) renders the roots unusable for chicon production. In South Africa high temperatures and irradiance were responsible for bolting. The aim of this paper was to identify witloof chicory cultivars that promise to be... -
Lateral root production of witloof chicory (Cichorium intybus L.) in response to ebb-and-flood nutrient supply in hydroponics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaWitloof chicory is currently grown on a large scale by making use of gravity-driven hydroponic cascade systems. A possible drawback of this method may be that the taproot is only submerged in the nutrient solution to a depth of about... -
Effect of gravity on the quality of witloof chicory (Cichorium intybus L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaIn order to establish the effect of gravity on chicon quality and yield, witloof chicory roots were forced at three angles. It was shown that roots forced in a horizontal position produced a significantly lower marketable chicon yield than roots... -
The relationship between chicon quality and lateral root formation in witloof chicory (Cichorium intybus L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaIn a related study, it was established that the use of an ebb- and-flood irrigation method during forcing of the taproots of witloof chicory (Cichorium intybus L) could be used to increase lateral root formation. In this study, five irrigation...