Agriculture is an important primary activity in India, producing most of the country's food and raw materials. There are several types of farming practiced across different regions based on environmental and socio-cultural factors, ranging from primitive subsistence to intensive commercial plantation farming. Major crops include rice, wheat, millets, pulses, sugarcane, oilseeds, tea, coffee, rubber, cotton and jute. Technological and institutional reforms since independence, including the Green Revolution, have increased agricultural productivity and output. However, agriculture continues to be a major contributor to India's economy and employment. Ensuring national food security remains an ongoing priority amid challenges of population pressure, market uncertainties, and impacts of globalization.