Last week the question was: What is happening to these tomato leaves?
These leaves are turning yellow starting at the base of the petioles because they have been exposed to glyphosate. Glyphosate is a great herbicide so long as it stays off the plants we don’t want to kill. This grower probably sprayed a little too close to his tomatoes and it drifted over. Some of the steps we can take to avoid accidental exposure include using hood sprayers, spraying when winds are low, using low sprayer pressure, large droplet sizes, establishing buffer zones, etc.
Here is this week’s question: What insect laid these eggs on this wheat head?