Blossom end rot in San Marzano paste tomatoes

Blossom End Rot

Google Images of Blossom End Rot

Physical Description

Blossom end rot in tomato

Blossom end rot in tomato

Brown or tan spots on the blossom end of tomatoes or on the underside of peppers.

Blossom end rot results from calcium availability problems when the fruit is forming. Calcium availability is affected by irrigation levels (both too much water, and too little water), as well as by the amount of calcium present in the soil.

Plants Affected

  • tomatoes
  • peppers

Plants Unaffected

 

Signs & Symptoms

Whole Plant

Leaves

Flowers

Fruit

  • Brown or tan spots on the blossom end of tomatoes
  • Brown or tan spots on the underside of peppers
  • fruit is still edible – just cut off the damaged parts

Roots/Tubers

How to Positively Identify

 

Treatment

 

Prevention & Control

 

Cultural Controls:

Habitat:

Temperature & Humidity:

– irregular water & heat cause blossom end rot

Mulching & Cultivation Practices:

Natural Enemies & Biological Controls

Insects:

Animals:

Reptiles:

Barriers

Traps

Sprays & Dusts

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Sources:

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