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Gewählte Master / Diploma Thesis:

Patrick Herz (2012): Biomasseentwicklung, Bodenstickstoffgehalt und Ertragsstruktur von Weizen und Erbse im Mischfruchtanbau.
Master / Diploma Thesis - Abteilung für Pflanzenbau, BOKU-Universität für Bodenkultur, pp 74. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
Cereal-legume intercropping may provide advantages compared to monocultures, e.g. a more efficient use of soil nitrogen because the legume saves the nitrogen content in the soil solution due to its symbiotic fixation of atmospheric N2. Furthermore, a higher utilization of the photosynthetic active light in intercropping may result in positive yield effects. The goal of this master thesis was to determine with wheat and pea the influence of varying intercropping ratios and different seeding dates on the ground cover, the aboveground biomass, the yield, the yield structure and the mineral nitrogen content in the soil. The higher the proportion of wheat in the intercropping was, the faster was the complete ground cover achieved. In all intercropping variants wheat was dominant regarding yield and biomass and suppressing the pea. The pea had much smaller yields and biomasses as it would have been expected due to its yields in monoculture and its seeding rates in the intercrops. However, the spring sown pea was less suppressed. The land use efficiency was for all intercrops higher than for the monocrops (LER>1). Furthermore, the Monetary Advantage Index (MAI) showed the monetary advantage of the intercrops compared to the monocrops. In intercrops with a low proportion of wheat seeding rate wheat could use the increasing space per plant with a higher number of ears per square meter, a higher number of grains per ear, a higher thousand-seed weight and a higher harvest index. These yield components of pea were decreasing with higher wheat and lower pea seeding rate in the intercrops. Till harvest the mineral nitrogen content in the soil of all variants was decreasing, but the decrease was faster with higher wheat and lower pea proportions in the intercrops. After the harvest the mineral nitrogen content in the soil of pea in monoculture was significantly higher as of the intercrops and wheat in monoculture.

Beurteilende(r): Kaul Hans-Peter
1.Mitwirkender: Neugschwandtner Reinhard

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