A review on production status and growing environments of rice in Nepal and in the world

Abstract

Rice is a major food crop for the people of the world. The role of rice is inevitable in the current and future global food security. It is the number one staple food crop in Nepal and contributes significantly to livelihood of majority of people and to the national economy. This article reviews global rice production scenarios; figures out global Mega Rice Environments (MREs) and based on these analyses, the authors developed Nepal’s Rice Production Environments (RPEs). The Asian countries dominate the global rice production. India has the largest area of rice cultivation. China is the world’s largest producer of rice. Rice productivity is highest in Japan. Rice is cultivated in diverse agro-ecosystems. Rice environments are classified mainly based on land types (upland vs. lowland) and water regimes (irrigated and rainfed). The MREs of the world are classified into seven categories (Four irrigated, two rainfed and one for deep water rice). A total of nine RPEs were identified for Nepal- six under irrigated and three under rainfed conditions. The findings of this study are useful for rice researchers, producers and policy makers.