Description: Das Projekt "D 1.2: Reducing alternation and production of off-season fruits in Lychee, Longan and Mango" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Kulturpflanzenwissenschaften (340), Fachgebiet Düngung und Bodenstoffhaushalt (340i) durchgeführt. The aim and vision of sub-project D1.2 was and is to encourage hillside farmers to plant erosion resistant fruit trees instead of erosion susceptible annual plants. For that reason, experiments to overcome the irregular bearing behaviour of the three most common fruit tree species in Northern Thailand (Litchi, Longan and Mango) from the first SFB period will be continued in order to make their planting more attractive to the farmers. Considerable progress has been made in D1 during the past 3 years to induce flowers and fruit in Longan trees by the application of KClO3 . With this technique, it was not only possible to induce year around flowers and fruit (off season fruit) but also to overcome the generally rather irregular fruiting behaviour of these trees. A similar technique is now being developed for Mango by using an inhibitor of the bio-synthesis of the plant hormone gibberellin. Only Litchi still resist this kind of manipulation by an 'off season technique' (OST). Great effort will therefore be devoted establishing a similar system for this species as well. Reliably, this can only be done by gaining a much better knowledge of the - most certainly hormonal - regulatory system that governs flower induction in trees. Investigations into the hormonal changes taking place during natural and induced flower induction is, therefore, one of the central objectives in this sub-project, with the goal to better understand the process of flower induction. Until now most of the progress in this area is entirely empirical in nature and a more specific manipulation therefore difficult. While the ability to produce off season fruit all year around and under various weather conditions has brought about a great number of new possibilities, new challenges will still be faced with regard to these methods. These circumstances will affect the whole production chain from the orchard to the market and consumer. In order to better investigate and understand these new situations, a large model experiment with Mango will be set up and problems like tree pruning, water and nutrient demand, phytopathological problems, demand on work force, fruit processing and drying etc. will be investigated by the interdisciplinary co-operation of 8 sub-projects within the SFB. The results obtained during these investigations will be shared with hillside farmers enabling them to take advantage of these new possibilities, which will provide for more reliable yields and allow them to market fruit year around. In general, these new opportunities should encourage farmers to plant more trees and thus reduce erosion. However, to make this system not only reliable and economic but also ecologically and socially beneficial to the society all potential benefits as well as risks have to be evaluated carefully from all different aspects.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Obstgehölz ? Obstbau ? Zierpflanze ? Obstbaum ? Obstwiese ? Baum ? Nährstoff ? Erosion ? Brunnen ? Thailand ? Phytohormon ? Blüte ? Kind ? Baum des Jahres ? Blume des Jahres ? Düngung ? Hemmstoff ? Jahreszeit ? Modellversuch ? Neuanlage ? Frucht ? Synthese ? Technik ? Trocknung ? Wirtschaftssystem ? Witterung ? Naturraum ? Wertermittlung ? Gefährdungspotenzial ? Landwirtschaft ? Gesellschaftssystem ? Infrastruktur ? Lagerung ? Ökosystem ? Wasserbedarf ? Markt ? Produktion ? BAEUME ? DAUER ? HORMONELL ? INITIATIVE ? METHODE ? EXPERIMENT ? MOEGLICHKEIT ? NACHFRAGE ? NEU ? ERGEBNIS ? NOERDLICH ? PROJEKT ? PROZESSBEDINGT ? SPEZIFISCH ? UNTER ? UNTERSUCHUNG ? VERARBEITUNG ? VERBRAUCHER ? VERHALTEN ? VORTEIL ? ZEITRAEUME ? Art [Spezies] ? ASPEKT ? BESCHNEIDEN ? Bepflanzung ? Einjahrespflanze ? FORTSCHRITT ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2003-01-01 - 2006-12-31
Webseite zum Förderprojekt
https://sfb564.uni-hohenheim.de/ (Webseite)Accessed 1 times.