There are a few signs that your irrigation practices may be causing problems. If you notice that your plants are wilting or dying, this may be a sign that you are applying too much water. If the leaves of your plants are yellowing, this may be a sign of waterlogging or nutrient deficiencies. And if you notice bare patches of ground, this may be a sign of soil erosion. If you are concerned that your irrigation practices are causing problems, it is best to consult with a professional.