Abstract

AbstractThe potential of various wild host species to support development of maize stalk borer, Busseola fusca (Fuller) was assessed both under laboratory and field conditions. Among the wild plant species, Pennisetum purpureum and Sorghum verticilliflorum (thick‐stemmed) were identified as the major hosts of B. fusca. In most cases these two wild host species were comparable with the main host plants in terms of development and population of the insect. This study suggests that abundance of S. verticilliflorum (thick‐stemmed) and P. purpureum could constitute a large reservoir of B. fusca. Saccharum officinarum and S. verticilliflorum (thin‐stemmed) were found to be of minor importance. Snowdenia spp. did not support development of B. fusca in the field.ZusammenfassungZur Entwicklung des Maisstengelbohrers, Busseola fusca (Full.) in wilden Wirtspflanzen in ÄthiopienEs wurde das Potential von B. fusca an wilden Wirtspflanzen Äthiopiens im Labor und Freiland untersucht. Unter den Wirtspflanzen waren Pennisetum purpureum und Sorghum verticilliflorum die beiden wichtigsten. In den meisten Fällen waren diese beiden Arten mit den Hauptwirtspflanzen hinsichtlich Entwicklung und Population des Schädlings vergleichbar. Die Untersuchungen zeigten, daß S. verticilliflorum und P. purpureum imstande waren, ein großes Reservoir für B. fusca zu bilden. Saccharum officinarum sowie das dünnstämmige Sorghum verticilliflorum waren von geringerer Bedeutung. Snowdenia spp. erwies sich im Freiland zur Entwicklung von B. fusca als nicht geeignet.

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