Tamil Nadu mango growers lift yields with high-density planting and drip irrigation
Project Unnati is reshaping mango economics in Tamil Nadu by raising yields, shortening the time to production and cutting water use.
Mango growers in India's Tamil Nadu are reporting stronger yields and better returns after shifting to scientific high-density orchards. The Hindu BusinessLine says Project Unnati, backed by the Coca-Cola Foundation, is helping farmers move away from older low-density systems toward a model built on ultra high-density planting, drip irrigation and more structured orchard management.
Farmer M. Suresh from Theni district said he had been growing cashew on two acres and a traditional mango variety on one acre before changing course. In 2024 he shifted to 150 mango plants per acre using Neelam and Bengaluran varieties with drip irrigation. He said the new system lowered maintenance and water use while allowing the farm to harvest mangoes at least twice a year.
Another farmer, R. Rajendran, said ultra high-density planting is delivering 10 to 12 tonnes of mangoes per acre each year, compared with 4 to 5 tonnes under the previous model. He also said growers are now able to harvest fruit in November and December and sell it for around 30 rupees per kilogram. Trees kept below six feet are easier to maintain and reduce labour costs.
Specialists at the ICAR Krishi Vigyan Kendra in Theni say the project combines UHDP with drip irrigation and scientific canopy management. In this system, mango seedlings are planted five metres apart instead of the 10 metres common in traditional orchards. The result is a much shorter gestation period, roughly two years instead of six to seven. The first phase covered 1,500 hectares in Theni and Dindigul, and the second phase added another 1,800 hectares in Dharmapuri and Krishnagiri.
Project participants say farmers received free grafted seedlings, regular training on cultivation, and support on pest and disease management. The programme also helped reduce water use by 40 to 50 percent through drip irrigation. In rain-fed districts, the Tamil Nadu government supported adoption further by providing a 100 percent subsidy for drip systems.
Growers still face a pricing problem during the peak marketing window from April to July, when mango prices soften. Local development groups argue that a nearby pulping unit would help absorb fruit and improve returns, instead of sending mangoes for processing to another district. Even with that unresolved, the project shows how density, irrigation and technical support can turn mango production into a faster and more profitable orchard system.