🟢 Greengram (*Vigna radiata*)

Greengram, also called mung bean, is one of the most versatile pulse crops in Indian agriculture. It is important for grain, forage, green manuring, and mixed or catch-crop use, which gives it a very broad agronomic role.

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Why Greengram Matters

Greengram is important because:

• it is protein rich
• it is short duration
• it can be grown as grain, forage, or green manure
• it fits mixed, sole, and catch-crop systems
• it improves soil through biological nitrogen fixation

This combination of flexibility and nutritive value makes it one of the most useful short-duration pulses.

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Origin and Distribution

Greengram is associated strongly with the Indian subcontinent and has spread across much of Asia and beyond.

It is cultivated in:

• India
• Pakistan
• Bangladesh
• Sri Lanka
• Southeast Asian countries
• selected regions in Africa, Australia, and elsewhere

This broad distribution shows its adaptability, though its strongest agronomic role remains in Asian pulse systems.

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Climate and Adaptation

Greengram can be grown in multiple seasons depending on region:

• kharif
• summer under irrigation
• winter in parts of peninsular India

It performs best under warm conditions, but it is sensitive to:

• frost
• waterlogging
• salinity

Rain during flowering is harmful because it interferes with reproductive success and may reduce pod set.

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Crop Features

Greengram is a branched pulse crop with:

• trifoliate leaves
• raceme-borne flowers
• multiple seeds per pod

It is valued agronomically for quick maturity and flexible use. This makes it especially suitable where short windows exist between major crops.

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Crop Management Principles

Key agronomic principles in greengram include:

• timely sowing
• proper spacing
• suitable seed rate
• seed treatment and biofertilizer use
• early weed control
• balanced phosphorus-focused nutrition

Because the crop duration is short, early growth management is crucial. Delays or poor stand establishment reduce final yield sharply.

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Water and Nutrient Management

Greengram generally needs only limited irrigation, but moisture is especially important at:

• flowering
• pod setting

Phosphorus is particularly important among nutrients, while small starter nitrogen is often used where needed. Foliar nutrition may also support the crop in stress-prone situations.

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Cropping Systems

Greengram is widely used in:

• intercropping with cereals or oilseeds
• rice-fallow pulse systems
• sequential cropping after a main crop
• short-duration catch cropping

Its cropping-system flexibility is one of its strongest advantages.

Summary Cheat Sheet

• Greengram is Vigna radiata.
• It is also called mung bean.
• It is a short-duration and highly versatile pulse crop.
• The crop is important for grain, forage, and green manuring.
• It helps improve soil through nitrogen fixation.
• It can be grown in kharif, summer, and in some regions winter.
• It prefers warm conditions but is sensitive to frost, waterlogging, and salinity.
• Flowering and pod setting are important moisture-sensitive stages.
• Good seed treatment, spacing, and early weed control are essential.
• Its major agronomic strength is cropping-system flexibility.

References

2 sources • [1] [2]

[1]

ICAR e-Course: Agronomy

[2]

Ministry of Agriculture & Farmers Welfare