|Damage on Ash leaves at the Jeffco Fairgrounds|
When I worked in an extension office in another state, a few gardeners reported that their vegetables and flowers started crashing quickly. They also had distorted, stunted growth. As it turned out, the gardeners applied manure to their gardens earlier in the year. Unfortunately it was contaminated with an agricultural herbicide. The product was used on pastures where the cattle later grazed. It passed right through the animals’ digestive tract into the manure. Because of the particular product used, gardeners would not be able to grow plants for a while in the areas where the manure was applied.
I was reminded of this incident while attending a class on herbicides (weed killers) last week, because herbicide carry-over and contamination are still happening.