A comparison was made of various techniques for isolating Pyrenochaeta terrestris (Hansen) Gorenz et al. from growing onion roots. Water agar was as suitable as potato dextrose agar (0.5% dextrose) and is recommended to avoid contamination. Texas L 303, Iowa Yellow Globe 51, and Trapp's Downing Yellow Globe used as trap crops were equally efficient. Maximum infection of the early planting occurred earlier than a later planting.
Proceedings of the Iowa Academy of Science
© Copyright 1961 by the Iowa Academy of Science, Inc.
Borgman, Robert P. and Horton, J. C.
"Isolation of Pyrenochaeta terrestris from Onion Roots,"
Proceedings of the Iowa Academy of Science, 68(1), 103-105.
Available at: https://scholarworks.uni.edu/pias/vol68/iss1/15