Please suggest remedy. This is my garden apple plant

Hi Satish . I suspect it might be due to 2 regions: 1. As per your sent image 1st - it looks like Iron Deficiency . 3rd image - it looks like Potassium Deficiency . Click on both green links for checking symptoms and taking control measures. 2. Your sent image is not clear. Through I suspect, you planted it in garden soil or in pot in garden. Leaves becoming brown and dry, might be due to overwatering, waterlogging and direct watering on plant. Control measures: 1. Don't do overwatering which leads to waterlogging and starts rotting if roots, eventually plant starts dying - avoid overwatering. 2. Don't do direct watering which effects on plant parts like leaves, buds, stem etc. 3. Don't do daily watering 4. Give optimum water depends upon soil and climatical conditions as per need of the plant. 5. If you planted your plant in pot - then make a hole below the pot to drain out excessive water from the pot or shift your plant is bigger pot or to open place. 6. Apply good amount of well decomposed FYM or Vermicompost and mix well with soil or pot soil. 7. Apply recommend dosage of fertilizers in split dosage depends upon age of the plant. 8. Take care of pest and deseases in time, if any.