Piled rocks serve as pathway (Engr. Djolly Ma. P. Dinamling (Bureau of Soils and Water Management))
Rockwall terracing technology is widely practiced by farmers in hilly area of Barangay Nasunggan, La Libertad, Negros Oriental. Rocks piled along contours are indigenous to the area. The terrace bed is cultivated and planted with corn, watermelon, and vegetables. In some areas, livestock like cattle and native pigs are being raised. The technology is a traditional practice in the Philippines and one of the conservation techniques under the Conservation Farming Village (CFV) approach.
Purpose of the Technology: Rockwall terraces are built to reduce soil erosion and provide ease in land preparation through the removal of naturally present rocks in the cultivated area.It also contributes to the partial arrangement and diversification of land use. Before the implementation of the technology, the physical condition of the area is not recommended for farming practices due to the presence of rocks scattered all over the area.Dispersed and concentrated runoff are controlled in this technology. Raindrop splash is also restrained. Moreover, it contributes to better water storage in soil.
Establishment / maintenance activities and inputs: With the aid of an A-Frame, contours are determined. Rocks and/or stones are gathered from the area and piled along contours to form walls 1.10 m wide and 1.50 m high. It requires 14 person-day for a month to construct a 50-meter rockwall with a cost of 800 USD. Maintenance of the structure is done three times a year by repiling of dislodged rocks.
Natural / human environment: The area is classified under a humid agro-climate condition where an average annual rainfall of 1000-1500 mm per year are observed. The average cropland size of land user ranges from 0.5-1 hectare with a slope of 18-25%. Majority of their income are derived from on-farm activities. Crops planted in the terraced bed are sold in the town market and is also utilized for consumption.
Местоположение: Negros Oriental, La Libertad, Филиппины
Число исследованных участков, где применяется Технология: 2-10 участков
Пространственное распространение Технологии:
Продолжительность применения Технологии: менее 10 лет назад (недавняя)
Тип внедрения/ применения
Технические характеристикиRockwall terrace built to utilize the rocks in the area.
Location: Brgy. Nasunngan. La Libertad, Negros Oriental Date: May 25,2015 Technical knowledge required for field staff / advisors: moderate Technical knowledge required for land users: moderate Main technical functions: control of dispersed runoff: retain / trap, control of concentrated runoff: retain / trap, control soil erosion Secondary technical functions: control of raindrop splash, reduction of slope angle, reduction of slope length, increase / maintain water stored in soil, promotion of vegetation species and varieties (quality, eg palatable fodder), spatial arrangement and diversification of land use, serve as access road Wall/ barrier Spacing between structures (m): 3-5m Height of bunds/banks/others (m): 1.5 Width of bunds/banks/others (m): 1.1 Length of bunds/banks/others (m): 50 m Construction material (stone): limestones Slope (which determines the spacing indicated above): 18% |
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| Опишите затраты | Единица | Количество | Затраты на единицу (Pesos) | Общая стоимость на единицу (Pesos) | % затрат, оплаченных землепользователями |
| Оплата труда | |||||
| labour | dam | 1,0 | 804,44 | 804,44 | 100,0 |
| Оборудование | |||||
| Tools | dam | 1,0 | 22,22 | 22,22 | 100,0 |
| Общая стоимость запуска Технологии | 826.66 | ||||
| Опишите затраты | Единица | Количество | Затраты на единицу (Pesos) | Общая стоимость на единицу (Pesos) | % затрат, оплаченных землепользователями |
| Оплата труда | |||||
| Labour | 50m | 1,0 | 13,33 | 13,33 | 100,0 |
| Общая стоимость поддержания Технологии | 13.33 | ||||
Количество до применения УЗП : 5000 ears for corn/ha
Количество после применения УЗП: 10000 ears for corn/ha
Reduced crop production area: medium (20-50%)
yes, greatly
