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Sortenbedingte Reaktion bei Lolium perenne L. auf systemisch selektiv wirkende Herbizide |
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| Authors: | W Opitz von Boberfeld H Grohmann |
| Institution: | Aus dem Institut für Pflanzenbau und Pflanzenzüchtung II (Grünlandwirtschaft und Futterbau) der Justus-Liebig-Universität Gieβen |
| Abstract: | Variety-specific reaction of Lolium perenne L. on selective systemic herbicides The investigation intended to show the specific reaction of different varieties of Lolium perenne on selective systemic herbicides. These results can be regarded as the base for advanced explorations to the described topic. The results may be summarized as follows: Independent of the stage of growth, the date of application, the dosage and the droplet size there were effects on the forage yield in correlation to the variety and the active ingredient. Measurable yield reductions were presented after CMPP application on the varieties of the late and after the treatment with Asulam on the varieties of the early maturity group. Compared to the maturity group the varietal attribute growthhabit demonstrated no significant effects. The active ingredients MCPB and MCPA presented not any measurable influence on the forage yield of the different varieties. In the main harvest year the yield depressions were manifested clearer than in the seeding year. In the same way the described secondary actions were larger after the treatment in an advanced stage. Extended investigations should inquire to the causes and secondary effects on the forage quality. Beyond this for variety testings of species with a large distribution and volume it seems remunerative to include questions of herbicides tolerance. |
| Keywords: | Grassland Lolium perenne variety herbicides environments |