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Gewählte Master / Diploma Thesis:

Gabriele Lochner (2010): Optimales Grünland - Erneuerungsverfahren im Dauergrünland mit Gemeiner Rispe.
Master / Diploma Thesis - Institut für Pflanzenbau und Pflanzenzüchtung (IPP), BOKU-Universität für Bodenkultur, pp 153. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
This thesis treats of the current grassland-resowing technologies for grassland-renovation and of the improvement of the grassland with Poa trivialis in the permanent grassland. The hard weeder solutions of the enterprises Apv and Güttler, have been compared with the light Hatzenbichler weeder and one other controll alternative. A practical resowing-trial has been evaluated scientifically with the soil parameters, botanical parameters and regarding forage-qualities. The results during the resowing-process has showed that with the light Hatzenbichler weeder there was an open soil of 6%. With the hard weeders from Apv and Güttler a more intense opening of the soil of 80% has been reached. Anyway the sward recovers very well with the hard weeder procedures from Apv and Güttler. Two month after resowing there have been up to 3 to 4% more Poa trivialis tomentums after the processing with the Hatzenbichler weeder. But there has been a reduction of Poa trivialis with the Apv and Güttler alternatives of about 41 to 62%. The forage-analysis in the laboratory have showed good results in all options, also in the control model where Poa trivialis has existed in higher amounts. In the practical silage evaulation the mugginess has been reduced in the hard weeder options of Apv and Güttler by one grade (grade of mugginess one to five) already in the first year after the resowing. A decrease of the forage quality cannot be shown in the laboratory. A high - energy, high - quality forage can perform worse at the feeding because of the extremely muggy smell. An elimination of Poa trivialis is hence absolutely necessary up from a percentage of 10% existence in the grassland, the elimination provokes a higher output and high forage qualities with the hard weeder alternatives of Apv and Güttler based on long term considerations. The resowing of Poa trivialis-grassland will increase in the practice.

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