Thank you for the reply. But this video talks about CBB in coffee plant. but our issue is white fly that sicks juice from coconut plant leaf and leave a greasy liquid and this is affected by a fungus and prevents the photosynthesis. this make the tree very week and affects the yield. this affects in yellow hybrid variety. so if you have any specific solutions and recommendation, it is most welcome and great relief. this pollachi in Tamilnadu is known for coconut cultivation..