Sorghum bicolor
Sunlight
Full sun — short day plant requiring high light intensity
Water
Very drought-tolerant — produces grain with 400-600 mm rainfall. Deep roots access subsoil moisture.
Soil
Tolerates a wide range of soils including heavy clays and vertisols. pH 5.5-8.0.
Temperature
Optimal 27-32°C. Tolerates heat better than maize. Growth stops below 15°C.
Humidity
Low to moderate. Grain mold problems under high humidity during grain fill.
Season
Warm season — 90-150 days. Plant at onset of rainy season in tropics.
Updated February 2026
Đây có phải Sorghum?
Tải ảnh lên và AI nhận diện loài kèm hướng dẫn chăm sóc và mẹo trồng.
Overview
Sorghum is the fifth most important cereal globally and the most important cereal in the semi-arid tropics of Africa and Asia. It is uniquely drought-tolerant among cereals due to its deep root system, waxy leaf surface, and ability to resume growth after drought stress. Over 500 million people depend on sorghum in Africa and Asia, primarily in dryland areas where maize and wheat cannot grow reliably. Sorghum is used for food (flour, porridge, flatbread), animal feed, brewing (traditional beer), and increasingly for bioethanol. It is a C4 grass with high water-use efficiency, making it a climate-resilient crop.
Plant Health
Sorghum is susceptible to 2 known diseases. Early detection is critical — use the CuraPlant app to scan leaves and get an instant AI diagnosis.
Sorghum Anthracnose
Sorghum anthracnose (Colletotrichum sublineolum) causes elliptical leaf spots with acervuli, panicle rot, and grain mold. Yield losses reach 30-67% in humid tropics. Manage with resistant varieties, crop rotation with non-host crops, seed treatment with thiram, and foliar application of azoxystrobin at flag leaf if disease pressure is high.
Downy Mildew
Downy mildew produces angular yellow patches on upper leaf surfaces with grayish-purple fuzzy growth underneath. Caused by Peronospora or Plasmopara oomycetes, it thrives in cool wet weather. Manage with resistant varieties, preventive mancozeb or copper sprays, good air circulation, and avoiding overhead irrigation. It requires free water to infect — keep leaves dry.
Cultivation Guide
Select varieties appropriate for rainfall zone (early-maturing for drier areas)
Plant at 75 × 15 cm for grain sorghum, wider for dual-purpose types
Apply modest nitrogen (40-60 kg/ha) in semi-arid zones — match to expected rainfall
Protect grain from bird damage — this is often the biggest yield constraint
Harvest when grain is hard and at 20% moisture or less
Thresh and store at <12% moisture to prevent grain mold and insect damage
Companion Planting
Strategic companion planting reduces pest pressure, improves pollination, and can significantly increase yields.
Climate & Regions
Active climate zones for Sorghum are highlighted below.
Tropical
Suitable
Subtropical
Suitable
Temperate
Suitable
Mediterranean
Not typical
Highland
Not typical
Arid / Semi-arid
Suitable
Specific Zones & Regions
Common Questions
Sorghum grows best during the warm season — 90-150 days. plant at onset of rainy season in tropics.. It requires optimal 27-32°c. tolerates heat better than maize. growth stops below 15°c. and full sun — short day plant requiring high light intensity. In tropical regions with consistent warmth, it can often be grown year-round with proper irrigation.
Sorghum is commonly affected by Sorghum Anthracnose, Downy Mildew. Regular crop monitoring, good air circulation, avoiding overhead irrigation, and using disease-resistant varieties are the most effective prevention strategies.
Sorghum grows best in tolerates a wide range of soils including heavy clays and vertisols. ph 5.5-8.0.. For irrigation: very drought-tolerant — produces grain with 400-600 mm rainfall. deep roots access subsoil moisture.. Maintaining proper soil moisture without waterlogging is critical — Sorghum is sensitive to both drought stress and root rot from excess water.
Sorghum grows well alongside cowpea, groundnut, pigeon-pea. These companions help repel pests, improve pollination, or provide ground cover.
CuraPlant
Scan any leaf with your phone and get an instant AI diagnosis, treatment guide, and prevention plan — even offline.