Author(s):

Biyyala Srinivasulu, G Sivakoteswara Rao and Dr. Pradeep Kumar Singh

Abstract: Tomato is one of the important crop in the family solanaceae. It is the third most important cultivated crop in India but it is adversely affected by various abiotic factors. The purpose of this review is to know about the non-parasitic disorders which are affecting the crop and the remedies which should be followed to control them. The major physiological disorders which are affecting the crop are blossom end rot, fruit cracking (radial and concentric cracking), puffiness, sunscald, blotchy ripening etc., The visible symptoms of the blossom end rot affected fruits are showing small darkened or water soaked area near the blossom end of the fruit which is majorly caused due to Calcium deficiency. Fruit cracking is associated with cracks develop at the stem end of the fruit, due to heavy rainfall or irrigation followed by long dry spell. The fruits affected with puffiness are looks normal from outside, but the fruit are hollow inside. One of the seed cavities is usually empty. Causes of puffiness are extreme high or low temperature, excessive fertilization and poor pollination and fertilization. Sunscald occurs on fruit exposed to the sun during periods of extreme heat and the affected fruits are shiny white or yellow patches would be on the sides of the fruit exposed to the sun. So this article will help the growers on various physiological disorders which are affecting the crop and the remedial measures to be followed to grow the healthy crop.

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