Publication Date
1985
Location
Kyoto Japan
Description
In the irrigated plains of Lombardy the continuous elimination of the permanent meadows and their replacement with the maize imposes the collection and conservation of Lolium multiflorum. Twenty seven populations, collected in the Milano-Lodi-Cremaarea, were evaluated in greenhouse, in concrete boxes 150 cm long, 40 cm high and 25 cm wide. Distance between the plants on the rows cm 2.5 (density 350 plants/m2). Dry forage yield, earliness and mortality were studied. Concerning dry forage yield there is not difference between the collected populations. On the contrary, a significant difference was observed between the whole set of collected populations and the testers at every cut. The collected populations show a good ability to produce also at the high temperature of July-August, the mean maximum being in greenhouse 30-33°C. Earliness variability in the collected populations appeared as a useful tool for creation of synthetic varieties. A good ability to produce spikes also at the second and third cut was observed as in the cv. Asso as in the collected populations. The high persistency of the collected material is underlined in comparison with the cv. Asso and Barmultra. The low percentage of mortality after 17 cuts in this very intensive management system show that the collected material has a very great demography stability. Starting from this material it is possible to create vigorous and persistent varieties, very useful for the irrigated regions of Northern and Central Italy.
Citation
Rotili, P; Gnocchi, G; Scotti, C; and Sererna, A, "Bio-Agronomic Evaluation of Lolium multiflorum Populations Collected in Irrigated Plains of Northern Italy" (1985). IGC Proceedings (1985-2023). 15.
(URL: https://uknowledge.uky.edu/igc/1989/session14/15)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Bio-Agronomic Evaluation of Lolium multiflorum Populations Collected in Irrigated Plains of Northern Italy
Kyoto Japan
In the irrigated plains of Lombardy the continuous elimination of the permanent meadows and their replacement with the maize imposes the collection and conservation of Lolium multiflorum. Twenty seven populations, collected in the Milano-Lodi-Cremaarea, were evaluated in greenhouse, in concrete boxes 150 cm long, 40 cm high and 25 cm wide. Distance between the plants on the rows cm 2.5 (density 350 plants/m2). Dry forage yield, earliness and mortality were studied. Concerning dry forage yield there is not difference between the collected populations. On the contrary, a significant difference was observed between the whole set of collected populations and the testers at every cut. The collected populations show a good ability to produce also at the high temperature of July-August, the mean maximum being in greenhouse 30-33°C. Earliness variability in the collected populations appeared as a useful tool for creation of synthetic varieties. A good ability to produce spikes also at the second and third cut was observed as in the cv. Asso as in the collected populations. The high persistency of the collected material is underlined in comparison with the cv. Asso and Barmultra. The low percentage of mortality after 17 cuts in this very intensive management system show that the collected material has a very great demography stability. Starting from this material it is possible to create vigorous and persistent varieties, very useful for the irrigated regions of Northern and Central Italy.
