Improved terraces

Your Rating:

Hillside forward-sloping terracing and stabilisation using structural and vegetative measures

This technology addresses the soil erosion and water runoff problems associated with traditional outward-sloping terraces by reshaping the land into a series of level or gently sloping platforms across the slope. This technology is a variant of sloping land agricultural technology (SALT) or contour hedgerow technology. Nitrogen-fixing hedgerow species and quality fodder grass species, which bind the soil, are cultivated along terrace riser margins to improve terrace stability. This also enhances soil fertility and increases fodder availability. The plants are grown in either single or multiple layers. The practice is applied under rainfed conditions and is culturally acceptable and affordable. After establishment, the technology also addresses the problems of fodder scarcity making it easier and less time consuming for women and girls to gather fodder. The hedgerow and grass species are established between January and June. Complete establishment of this technology may take one year. The first step in creating the terraces is to build retaining walls using cement bags filled with soil which are then supported with bamboo cuttings along the contour (= future terrace risers). This divides the land into the planned terrace sections. The length and width of the terraces depends on the size and shape of the original field. Secondly, the soil is excavated from the upper part of the terraces and is used to build up the lower part above and behind the terrace riser wall to create a level bed. The fertile top soil must be kept aside and later spread over the newly terraced fields. The final step is to plant grass and hedgerow species on the outermost margins of the terrace above the risers. Maintenance involves slicing the terrace risers once or twice a year with a spade, and smoothing off rills that appear on the surface of terraces after the premonsoon and monsoon periods. Hedgerows should be cut regularly but not more than twice a year, normally to a height of about 50 cm. Grasses should be cut about once to twice a month depending on their rate of growth. The technology is applied under humid subtropical climate conditions (1300 mm annual rainfall with about 80% of it falling in the monsoon months of June - September). The case study area has hill slopes of 16-30% that are mostly highly erodible red soils (FAO classification: luvisols)

Achievement

Terrace improvement is an age old practice by which sloping hill land is mechanically converted into a series of level or nearly level terraces. It is commonly found in low to middle elevation ranges under both irrigated and rainfed conditions. However, the practice of riser stabilisation through vegetative means is not common. Most of the villagers report us that when they converted their sloping land into the level terrace, their yielding capacity is gradually increasing and with the high income through their vegetables and paddy cultivation in their limited area of sloping lands in the surrounding area of the Pachkhal valley's hills and hillocks. They are very happy with this technology introducing by PARDYP project. Thamajor production are potato, cauliflower, cabbage, bitter gaurd, green vegetables, broadleaf, mustard, cow beans, beans, soyabeans. Among them potato is a principal crop.

Project/Programme Info

PARDYP

Implementers

Saraswoti Bhetwal - Lamidihi, Panchkhal VDC, Ward No.4

Harimaya Panday - Dhotra, Panchkhal, VDC, Ward No. 9
Nara Bahadur Panday - Dhotra, Panchkhal, VDC, Ward No. 9
Ramesh Bika - Dhotra, Panchkhal, VDC, Ward No. 9
Pitambar Danuwar - Dhotra, Panchkhal, VDC, Ward No. 8
Rama Danuwar - Dhotra, Panchkhal, VDC, Ward No. 8
Januka Dhungel - Ekanta Basti, Dhotra, Panchkhal, VDC
Nirmala Shrestha - Bakhreldihi, Panchkhal, VDC, Ward No. 7
Krishna Bahadur Baniya - Bakhreldihi, Panchkhal, VDC, Ward No. 7
Basanta Lal Shrestha - Kharelthok VDC, Ward No. 1
Buddha Laxmi Shrestha - Kharelthok VDC, Ward No. 1
Ramesh Kharel - Kharelthok VDC, Ward No. 5
Mahalaxmi Kharel - Kharelthok VDC, Ward No. 4
Indra Bahadur Tamang - Kubhinde, Panchkhal


Duartion

December - December

Geographical Coverage


For further information contact:

Madhav Dhakal/Vijay Danuwar

Comments