Lucerne (kudirai masal) is a perennial fodder grown under irrigation year-round (the source lists Coimbatore, Tiruppur, Erode, Krishnagiri and Dharmapuri). Well-drained black cotton soils suit it best, and it can be grown in alkaline soils too. Varieties: CO 2 and CO 3, with about 22–24% protein.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Lucerne – Season and varieties; soil, p. 329
