What is the recommended fertilizer dose for a 3-year-old lemon plant?

A 3-year-old lemon plant is still in its early growth phase but has started forming a strong canopy and root system. At this stage, proper fertilizer management is very important because it helps the plant develop healthy branches, strong leaves, and good flowering in the coming years. If the right nutrients are given now, the lemon plant grows vigorously and becomes ready for good fruit production by the 4th or 5th year. Understanding the correct fertilizer dose and applying it at the right time helps farmers maintain a healthy and productive lemon tree.
Lemon plants require a balanced supply of nitrogen (N), phosphorus (P), and potassium (K) along with organic matter and micronutrients. For a 3-year-old lemon plant, a commonly recommended fertilizer dose per plant per year is around 300–350 grams of nitrogen, 150–200 grams of phosphorus, and 150–200 grams of potassium. These nutrients are essential for leaf growth, root development, flower formation, and fruit quality.
Nitrogen helps in vegetative growth, allowing the plant to produce lush green leaves and new shoots. Phosphorus strengthens the root system and supports flower bud formation. Potassium improves disease resistance and helps in fruit development. All these nutrients together create a balanced nutrition environment for the lemon plant.
In addition to NPK fertilizers, organic matter is equally important. Farmers should apply 10–15 kg of well-decomposed farmyard manure (FYM) or compost every year around the base of the plant. Organic matter improves soil structure, increases water-holding capacity, and supports beneficial soil microbes. This helps the plant absorb nutrients more effectively.
The fertilizer dose should not be applied all at once. Instead, it should be divided into two or three splits during the year. The first application is usually given at the start of the monsoon, when the soil becomes moist and conditions are favourable for nutrient absorption. The second split can be given after the monsoon, around September or October. In some regions, a third light application may be given before flowering, depending on soil fertility.
Micronutrients such as zinc, magnesium, iron, and boron are also important for lemon plants. Deficiencies of these nutrients can lead to yellowing leaves, poor flowering, and small or deformed fruits. Spraying micronutrient mixtures once or twice during the growing season helps maintain the plant’s health. Foliar sprays of zinc sulphate or magnesium sulphate during active growth periods are very useful.
Proper irrigation supports fertilizer uptake. Lemon plants do not like waterlogging, but they need regular moisture. After applying fertilizers, light irrigation helps the nutrients dissolve and reach the root zone. Mulching around the plant with dry leaves or straw also helps conserve moisture and improves soil health.
Farmers should avoid applying fertilizers too close to the trunk. Instead, they should spread the fertilizers in a circular band around the tree, about 1–1.5 feet away from the main stem, where most feeder roots are active.
In simple words, a 3-year-old lemon plant needs around 300–350 g nitrogen, 150–200 g phosphorus, 150–200 g potassium, and 10–15 kg organic manure per year, applied in 2–3 splits along with micronutrient sprays. With proper fertilization, irrigation, and soil care, the lemon plant grows stronger and prepares well for higher fruit production in the coming years.