Lodging of Italian ryegrass stands is a critical factor that reduces seed yield and complicates mechanical harvesting of the crop.
In the reference
48
varieties
crop Italian ryegrass,
where this is mentioned in the description.
To assess lodging resistance, visual scoring scales are used, as well as quantitative indicators, including plant height, stem diameter, and bending resistance. In breeding trials, a lodging index of 30–40% of the stand area during the seed-filling stage is considered significant.
The genetic predisposition of varieties to lodging allows for selection using molecular markers and QTL mapping. The level of lodging directly correlates with agronomic practices: the application of excessive doses of nitrogen fertilizers in the range of 90–120 kg/ha a.i. provokes a decrease in stem resistance.
General information about the subject — on the page
Lodging.
Varieties of Italian ryegrass mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.