Vinegar as a Herbicide?
by Pam Collinge
September 20, 2008
Prior to the widespread use of chemical herbicides, cultural
controls, such as altering soil pH, salinity, or fertility levels,
were used to control weeds. Sixth graders have designed an
experiment where they are testing vinegar solutions to see if the
vinegar will alter the pH of the soil enough to kill weeds.
One meter square plots have been developed to test and
observe the plant reactions to solutions containing differing
amounts of vinegar. 
Both qualitative and quantitative data will be taken. Most students are predicting that the solution with a 9:1 ratio of vinegar will work. What do you think?
