The effect of 2,4-D and 2M-4K on some oil flax varieties grown under different environmental conditions

Authors

• Juhani Paatela
• R. S. Dunham Division of Agronomy and Plant Genetics, University of Minnesota, St. Paul, Minnesota

DOI: https://doi.org/10.23986/afsci.71265

Abstract

Some results of a preliminary test conducted at University Farm, St. Paul Minnesota have been given. The following conclusions have been made: 1. Flax plants that had grown slowly both before and after spraying and those that had grown slowly up to the time of spraying did not show as distinct stem bending or as great reduction in height as did those which grew rapidly before spraying. 2. Varietal differences in the response to methoxone and 2,4-D were apparent between Redwing, Dakota, and Minerva. Redwing was most tolerant with Dakota and Minerva more susceptible. 3. The effect of spraying oil flax with methoxone was not as severe as with 2,4-D when measured by the amount and degree of stem curvature and the reduction in height. Equivalent amounts of the effective substance in each herbicide were used.