Principles and construction of agricultural terraces
Terracing divides continuous sloping terrain into manageable horizontal fields.
Structural design principles:
- Bench terraces: Built on slopes ranging from 16% to 33%, cutting and filling earth to create horizontal step benches with a gentle inward slope.
- Riser bunds: Vertical risers protected with stone pitching or perennial stabilizing grasses (like vetiver or hybrid napier) to prevent edge collapse.
- Shoulder bunds and toe drains: Raised earthen edges along the terrace lip prevent sheet runoff, directing surplus water into stone-lined drainage outlets.
Suitable crops and farming systems
Terrace farming supports diverse hill cropping systems adapted to mountain microclimates.
Major terrace crops:
- Terrace paddy: Wetland rice cultivated on lower, water-abundant stepped terraces fitted with continuous flow irrigation.
- Millets and hill pulses: Finger millet (ragi), barnyard millet (jhangora), and black soybean grown on upper rainfed terraces.
- Horticulture orchards: Apple, peach, apricot, plum, and tea bushes planted on contour strips.
- Off-season vegetables: Peas, cabbage, capsicum, and potatoes that command off-season premium prices in plains mandis.
Soil and water conservation impact
By reducing slope velocity, terracing promotes rainfall infiltration, recharges mountain natural springs, and preserves organic-rich topsoil. The National Mission on Sustainable Agriculture (NMSA) provides financial and technical assistance for contour bunding and watershed development through agricoop.nic.in.
Official source
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Soil & Land Use Survey of India (SLUSI) ↗Related on KisanPe
Common questions
Why is terrace cultivation practiced on mountain slopes?
It converts steep, uncultivable slopes into flat stepped platforms that prevent catastrophic soil erosion and retain rainwater for crop growth.
Which Indian states rely heavily on terrace farming?
Uttarakhand, Himachal Pradesh, Jammu & Kashmir, and the North-Eastern states (Nagaland, Meghalaya, Sikkim, Assam) rely extensively on terrace farming.
How are terrace risers protected from collapsing during monsoon rains?
Risers are reinforced with dry stone masonry walls and planted with deep-rooted binding grasses like vetiver to anchor the soil.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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