Sweet Sorghum
- 24 May 2024
Why is it in the News?
Governments should be using their agriculture extension services to raise awareness among farmers, and consumers about the benefits & practical applications of sweet sorghum in people’s diet.
About Sweet Sorghum:
- Sweet sorghum is the most important millet crop occupying the largest area among the cereals next to rice.
- It is mainly grown for its grain and fodder.
- Alternative uses of sorghum include commercial utilization of grain in the food industry and utilization of stalk for the production of value-added products like ethanol, syrup jaggery and enriched bagasse as fodder and as a base material for cogeneration.
- Sweet sorghum has emerged as a supplementary crop to sugarcane in dry land pockets for the production of ethanol.
- The success rate is high because of the use of existing machinery available in the sugar factories and attached distilleries.
- The advantages of the crop are it can be grown with limited water and minimal inputs and it can be harvested in four months.
Climate and Soil:
- Sweet sorghum can be sown in June with the southwest monsoon, in September-October with the northeast monsoon (500-600 mm rainfall), or in summer with assured irrigation.
- The crop prefers moderate rainfall; excessive moisture or heavy rain after flowering can reduce sugar content.
- With irrigation, early sowing before June can prevent issues with heavy rains during flowering and grain maturation.
- Summer sowing may result in lower biomass and sugar yield. Sweet sorghum thrives in well-drained soils of medium depth (18" and above), with water requirements varying by soil type (red, black, laterite, and loamy).
Multiple Uses of Sweet Sorghum:
- Sweet sorghum is a versatile crop used for grain, animal feed, and sugary juice.
- Its grains are made into steamed bread, porridge, and beer, providing high nutritional value with proteins, carbohydrates, fibre, and essential minerals like potassium, calcium, sodium, and iron.
- Resilient in arid climates, sweet sorghum produces significant biomass, which, along with grains, serves as high-quality animal feed.
- The sugary juice from its stalks is used for bioethanol production, yielding more ethanol per hectare than maize, second only to sugarcane.
- Notably, sweet sorghum is drought-resistant, capable of dormancy during dry periods and resuming growth later.
- Its tolerance to low water, nitrogen inputs, salinity, and drought stress makes it ideal for arid regions, making it popular in the US, Brazil, and China.