My lemon tree leaves getting yellowish and falling . And fruits are not growing. Plz help

Hi Souvorish Mukharjee . It's Citrus Canker lets click on green link for checking symptoms and taking control measures from Plantix library. Apply good amount of Farm Yard Measure or Vermicompost once in 6 months to get good growth and fruits. Use "fertilizer calculater", "crop Advisory" and "See all tasks" sections available here on home page of Plantix to increase your crop productivity.