Citrus leaves became yellow and dropped on the ground.

Usually in December and January citrus plants shed all the leaves. In March New leaves with flowers emerge Don't forget to ferrilize in February

l agree with makon

did u me tell makone in what ratio the fertilizers provide to the plants . thats means urea,potassium ,phospate

For fertilizer every seed and plant shop have fertilizer for fruit plants. Also use compost in addition

This is a kino plant in my porch in December full of fruit. It is grown in a 7inch strip with a very less place to ferrilize. I use fertilizer by diging 3inch pit and burning at least 250 grams of fertilizer on both sides of the stem.

Now my kino plant is full of flowers