Best Fertilizer for Mango in India
Mango is a long lived fruit tree, so its fertilizer needs rise gradually with age and then stay roughly steady once the tree is in full bearing. Young non bearing trees need mostly nitrogen
Overview
Mango is a long lived fruit tree, so its fertilizer needs rise gradually with age and then stay roughly steady once the tree is in full bearing. Young non bearing trees need mostly nitrogen and phosphorus to build the frame, while bearing trees need a balanced dose with extra potash for fruit size and quality. ICAR, IIHR and State Agricultural Universities recommend doses per tree per year linked to tree age, applied once or twice a year. The most important time is just after harvest and before the monsoon, so the tree can recover and form next season's flowering shoots. The figures below are a per tree per year range by age group. Always adjust them to your Soil Health Card or a fresh soil test, your variety such as Alphonso, Dashehari or Kesar, and local KVK advice.
Recommended NPK dose for Mango
Doses rise with tree age. A common guide is year 1 about 100 g N, 50 g P2O5, 100 g K2O per tree, increasing each year so that a full bearing tree of 8 to 10 years and older gets roughly 500 to 1000 g N, 250 to 500 g P2O5 and 500 to 1000 g K2O per tree per year. A simple rule used by many is to multiply 100 g N, 50 g P2O5 and 100 g K2O by the age in years up to about year 10, then keep it steady. Treat these as a starting range and confirm with your Soil Health Card, a fresh soil test and KVK advice.
Application schedule
For bearing trees, apply the full dose of FYM, phosphorus and potash with half the nitrogen just after harvest in June to July at the start of the monsoon. Apply the remaining half of nitrogen in September to October. For young non bearing trees, split the dose into two, once at the start and once before the end of the rains. Spread fertilizer evenly in a shallow band along the tree canopy edge or drip line, lightly fork it in, and irrigate. Avoid heavy nitrogen close to flowering as it pushes vegetative flush instead of flowers.
Organic & bio-fertilizers
Apply 10 to 50 kg of well rotted farmyard manure or compost per tree per year depending on age, with mature bearing trees getting 25 to 50 kg. Vermicompost at 5 to 10 kg per tree and oil cakes such as neem cake improve soil and supply slow nitrogen. Biofertilizers like Azotobacter, Azospirillum and phosphate solubilising bacteria along with mycorrhiza help root growth and nutrient uptake. Growing and ploughing in a green manure crop or a legume cover in the orchard inter space builds organic matter over years.
Micronutrients & deficiency signs
Zinc deficiency is common in mango and shows as small narrow leaves, mottled yellowing between veins and bunched shoots called little leaf or rosetting. Iron deficiency yellows young leaves while veins stay green. Boron deficiency causes fruit cracking, internal browning and malformed fruit. Manganese and magnesium can also fall short on sandy soils. Correct with foliar sprays such as 0.5 percent zinc sulphate, 0.2 percent borax and 0.5 percent ferrous sulphate, usually before flowering and at fruit set. Confirm the need with leaf analysis or KVK advice before spraying.
Tips & cautions
Time the main dose just after harvest so the tree builds strong shoots for next year's flowering. Keep nitrogen low near flowering to avoid excess leaf flush. Apply fertilizer along the canopy drip line where feeder roots are active, not against the trunk. Do not flood irrigate right onto fresh urea. Maintain a basin and mulch to conserve moisture. In alternate bearing varieties, balanced nutrition with adequate potash and timely micronutrient sprays helps even out the on and off year cycle.
These are general recommendations. For the exact dose, follow your Soil Health Card / soil test and local KVK, and avoid over-applying urea.
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