Arhar is grown throughout the tropical countries of the world, especially in the more arid regions. It is one of the most cultivated crop in India. It is grown over an area of 26.7 lakh hectares with a production of 19.2 lakh tons.

Arhar grows well in warm tropical and sub-tropical climate. The crop prefers a fairly moist and warm climate during its vegetation period. Cloudy weather and excessive rainfall at flowering time damage the crop to a great extent.

For Arhar Summer season is the main growing season in India, but heavy rain is injurious to it.

Arhar may grow well on a wide range of soils varying from sandy loams to clay loams. It does well in fertile and well drained loamy soils. The saline-alkaline and waterlogged soils are not suitable for its cultivation.

Several important varieties of arhar have been available in different states. Nowadays there is emphasis on short duration varieties so that arhar-wheat rotation follows where irrigation facility is available. Selection of varieties depends mainly on the following factors:

• Method Of Sowing
• Crop Rotation
• Pest and Disease
• Irrigration Facilities
• Climatic Condiions