Phoma medicaginis has recently been spreading on alfalfa causing black leaf and stem in irrigation fields near Prizren. The average number of lesions is from 18 up to 30 on leaves with an average diameter of 1-10 mm. The average size of pycnidia from diseased alfalfa leaves, stems and PDA is 325 x 338 μm, whereas the average size of pycnidiospores is 7.3 x 3.6 μm. Maximum spore production in average was on PDA 140.9 x 104/ml.

Phoma medicaginis; Medicago sativa

Published by University of Zagreb, Faculty of Agriculture, Zagreb, CROATIA
Sponsored by Ministry Science and Education of the Republic of Croatia