What is sequential cropping system ?

Growing crops in sequence within a crop year, one crop being sown after the harvest of the other is known as sequential cropping. For example, rice followed by pigeon pea, followed by wheat. This system with relatively short growing season crops offers better total annual use of land than a single crop system. There are different type of sequential cropping like double cropping , triple cropping , quadruple cropping and ratoon cropping.