Yellowing is due to deficiency of some nutrient or it is attacked by some pests/ disease?

leaf curl virus maybe .. no hope

Parwani Family টমেটোর হলুদ পাতা কোঁকড়ানো ভাইরাস রোগ Please check this link for more details and preventive measures.1. Physical suppression system: 6 To produce seedlings by covering the tomato seedbed with small perforated (40-50 holes per square inch) nylon net. Infected trees are first picked up and destroyed as soon as they are seen. Keep field weeds clean. 2. Chemical suppression system: In case of presence of carrier insects in the field, control it by applying approved pesticides such as imidechloropid or fruit pesticides.

Thank you Sreekanth ji and Abdul Haque ji.

Parwani Family you are also welcome .

Is yellow sticky trap useful for whiteflies? I had hung 2 yellow sticky traps but could see any whiteflies. Only few black insects were there.

Is it also same problem?

Parwani Family Yes. However, if you are not successful with the yellow glue trap, then as a last resort, Tido Plus should be mixed with 2 gm, 10 liters of water and applied

That's right Abdul Haque ji. Thank you very much.

The plant u shown in pot show damage due to Thrips as it was showing upward curling of Leaves