Excavation of soil and water conservation channels separated by tie bands (Kenneth Twinamasiko)
The technology is applied in already existing degraded farmlands, which are individually owned. An average farm size is less than half an acre.
A typical soil and water conservation channel is a trench 1m wide, 1m deep and with tie bands (1m wide to avoid flow of water along the trench) at intervals of 10m along the contour. The excavated soil is used piled up into an earth bund next to the trench at lower side and stabilized by planting hedge rows of "Starria grass" to avoid erosion.
This technology reduces the speed of water running down the slope during a downpour and traps the water and soil that is being washed thereby reducing soil erosion and increasing water retention.
Areas which are prone to degradation by erosion are identified and later, the farmers are trained on benefits of this technology, how to set out the technology by use of the ‘A – frame’, how to construct the channels and how to maintain them by periodic de-silting and planting grasses and shrubs on the bands.
The 'A - Frame' is an A shaped structure made from wooden poles or thin metal poles that can be easily constructed and used to peg flat or graded contours or water drains.
This technology helps maintain the good top soil, which would have otherwise been washed down the slope into the valley and increases water retention.
The land users like this technology because their soil is not lost but what they dislike about this technology is that it is labour intensive, setting it out is technical and not easily conceptualized and it takes part of the land. Individual land users excavate these channels in their individual plots of land using simple hand tools like hoes, spades and pick axes.
ສະຖານທີ່: Rubaya Sub County, Kabale District, South Western Region, ອູເຈນດາ
ຈໍານວນ ພື້ນທີ່ ທີ່ໃຊ້ ເຕັກໂນໂລຢີ ທີ່ໄດ້ວິເຄາະ: 100-1000 ພຶ້ນທີ່
ການແຜ່ກະຈາຍຂອງເຕັກໂນໂລຢີ: ແຜ່ຂະຫຍາຍຢ່າງໄວວາໃນພື້ນທີ່
ຢູ່ໃນເຂດປ່າສະຫງວນທີ່ບໍ?:
ວັນທີຂອງການປະຕິບັດ: 2015
ປະເພດຂອງການນໍາສະເໜີ
| ລະບຸ ປັດໃຈ ນໍາເຂົ້າ ໃນການຜະລີດ | ຫົວໜ່ວຍ | ປະລິມານ | ຕົ້ນທຶນ ຕໍ່ຫົວໜ່ວຍ (USA) | ຕົ້ນທຶນທັງໝົດ ຂອງປັດໃຈຂາເຂົ້າ ໃນການຜະລິດ (USA) | % ຂອງຕົ້ນທຶນທັງໝົດ ທີ່ຜູ້ນໍາໃຊ້ທີ່ດິນ ໃຊ້ຈ່າຍເອງ |
| ແຮງງານ | |||||
| Setting out | meter | 150.0 | 0.02 | 3.0 | 100.0 |
| Excavation of the channels | meter | 150.0 | 1.06 | 159.0 | 100.0 |
| Planting starria grass | meter | 150.0 | 0.02 | 3.0 | 100.0 |
| ອຸປະກອນ | |||||
| Forked hoes (1 piece can excavate 1km) | meter | 6.67 | 5.0 | 33.35 | |
| Pick axes (1 piece can excavate 1km) | meter | 6.67 | 5.0 | 33.35 | |
| Spades (1 piece can be used on 1km) | meter | 6.67 | 5.0 | 33.35 | |
| ວັດສະດຸໃນການປູກ | |||||
| Starria grass (1 sack for 20m) | sacks | 7.5 | 7.0 | 52.5 | |
| ຕົ້ນທຶນທັງໝົດ ໃນການຈັດຕັ້ງປະຕິບັດ ເຕັກໂນໂລຢີ | 317.55 | ||||
| ຄ່າໃຊ້ຈ່າຍທັງໝົດ ສຳລັບການສ້າງຕັ້ງເຕັກໂນໂລຢີ ເປັນສະກຸນເງີນໂດລາ | 0.1 | ||||
| ລະບຸ ປັດໃຈ ນໍາເຂົ້າ ໃນການຜະລີດ | ຫົວໜ່ວຍ | ປະລິມານ | ຕົ້ນທຶນ ຕໍ່ຫົວໜ່ວຍ (USA) | ຕົ້ນທຶນທັງໝົດ ຂອງປັດໃຈຂາເຂົ້າ ໃນການຜະລິດ (USA) | % ຂອງຕົ້ນທຶນທັງໝົດ ທີ່ຜູ້ນໍາໃຊ້ທີ່ດິນ ໃຊ້ຈ່າຍເອງ |
| ແຮງງານ | |||||
| Desilting of channels (when half full) | meter | 1.0 | 0.265 | 0.27 | 100.0 |
| Trimming of hedge rows (100m per day) | days | 1.0 | 0.0212 | 0.02 | 100.0 |
| ຕົ້ນທຶນທັງໝົດ ທີ່ໃຊ້ໃນການບໍາລຸງຮັກສາ ເຕັກໂນໂລຢີ | 0.29 | ||||
The impacts are seen immediately after the first crop
