Nematode Nemesis
Have your tomatoes or other vegetables started wilting in the middle of the day, even though the soil is moist? Are their leaves yellowing or undersized? Have the plants stopped growing and producing? The problem may be underground. When you remove a puny plant, gently rinse off the soil and examine its roots. If they are thickened, with pearly white nodules growing on them, your soil is probably infested with root-knot nematodes. That’s bad news because it’s virtually impossible to get rid of this lurking menace. You can find ways to grow a good crop, but it will take some strategy and effort.