Provide uniform watering, use a mulch, and do not over fertilize with nitrogen. Avoid excessive nitrogen fertilization. Cracking - Sudden summer rains or watering after drought may cause fruit cracking. Choose a variety recommended for Nebraska since varieties differ in their tendency to crack. Pick fruits in the pink stage and allow them to ripen indoors.
Some varieties are resistant, so be sure and choose a wilt-resistant variety.
Blight And Other Foliage Diseases - Several fungus diseases cause spots or lesions on tomato leaves and fruit. Lower leaves may yellow, die, and fall off the plant. These diseases are usually worse in warm, humid weather. A fungicide spray such as Mancozeb, Daconil or Liquid Copper applied at weekly intervals should minimize these problems. Mulching around the base of the plants helps to conserve moisture and hold down diseases.