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Jacky DUMONT
Responsable marché cultures spécialisées
Asked a question 12 days ago

issue (stain and necrosis) on red peppers (mature fruits):no treatment, same issue on the 4 faces: what is your opinion?

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Hello Jacky,

it's a bit tricky to diagnose from a photo, without seeing the whole plant. It might be a result of thrips, but if you can provide more information - growing conditions (e.g. open field \greenhouse) nutrition,  if you see any symptoms on the leaves? 
This information will allow the community to answer you better.

I'm also attaching here a guide pepper diseases, I hope it will help you identify the issue.

https://plantvillage.psu.edu/topics/pepper-bell/infos/diseases_and_pests_description_uses_propagation2

Anthony Duttle
Senior Sales Agronomist, North America.

Jacky, As Adi mentioned, additional infofrmation regarding soil type and conidtions would be helpful. Additional pictures of the plants that these symptomatic fruit came from would also be helpful. 

As Adi mentioned, there are spots on the fruit that resemble thrips egg deposit sites or plant bug stings. because the bronzing coincides with these spots, it could be a result of foliar pesticide or spray damage that was made. however without additional information, its difficult to narrow down the cause. 

Any additional information you can share would be help

Sanjay Naithani
Chief Agronomist-ICL India

Hello Jacky,

In my opinion there can be four basic reasons for such staining:

  1. Pathological
  2. Nutritional imbalance
  3. Climatic and Physiological
  4. Mechanical injury and Post Harvest issues.

If it's on all four sides, you may rule out 3 and  4. You may dip a affected pepper in water overnight and spray on few healthy peppers on different plant. If symptoms develop, it could be pathological problem.If no symptoms appear it could be nutritional issue. Now here is my take on this:

Apparently the leaves of your crop are healthy and i do not see any spots, lesions, necrosis or discoloration so assume this could be a nutritional issue. I advise that you may go for  a leaf analysis for a more accurate diagnosis.