India has the largest paddy output in the world and is also the fourth largest exporter of rice in the world. In India, West Bengal is the largest rice producing state. Paddy fields are a common sight throughout India, both in the northern gangetic plains and the southern peninsular plateaus. Paddy is cultivated at least twice a year in most parts of India, the two seasons being known as Rabi and Kharif respectively. The former cultivation is dependent on irrigation, while the latter depends on Monsoon. The paddy cultivation plays a major role in socio-cultural life of rural India. Many festivals such as Onam in Kerala, Bihu in Assam, Sankranthi in Andhra Pradesh, Thai Pongal in Tamil Nadu, Makar Sankranti in Karnataka, Nabanna in West Bengal celebrates harvest of Paddy. Kaveri delta region of Thanjavur is historically known as the rice bowl of Tamil Nadu and Kuttanadu is called the rice bowl of Kerala.