१५ दिवस झाले रोप लावुन पान पिवळ पडले आहे काय कराय पाहिजे

It looks like a nutritional deficiency, such Deficiência de Ferro . To identify which nutrient your plant needs and to make a good fertilization it is important that you do a soil analysis before planting. Analysis is a set of various chemical processes that determine the amount of available plant nutrients in the soil, but also the chemical, physical and biological soil properties important for plant nutrition.