1.2 Технологийг үнэлэх, баримтжуулах ажилд хамаарах мэдээлэл өгсөн хүмүүс, байгууллагуудын холбоо барих мэдээлэл

Технологи баримтжуулах/үнэлэх ажилд дэмжлэг үзүүлсэн байгууллага(ууд)-ын нэр (шаардлагатай бол)

Missenyi District Council (Missenyi District Council) - Бүгд Найрамдах Нэгдсэн Танзани Улс

Технологи баримтжуулах/үнэлэх ажилд дэмжлэг үзүүлсэн байгууллага(ууд)-ын нэр (шаардлагатай бол)

Bukoba district council (Bukoba district council) - Бүгд Найрамдах Нэгдсэн Танзани Улс

1.3 ВОКАТ-аар баримтжуулсан өгөгдлийг ашиглахтай холбоотой нөхцөл

Мэдээллийг хэзээ (газар дээр нь) цуглуулсан бэ?

11/06/2014

Эмхэтгэгч болон гол мэдээлэгч хүн(хүмүүс) WOCAT аргачлалаар баримтжуулсан мэдээллийг ашиглахтай холбоотой нөхцлийг хүлээн зөвшөөрсөн:

Тийм

1.4 Технологи тогтвортой гэдгийг баталгаажуулах

Энэ технологийг газрын доройтлыг бууруулж, газрын тогтвортой менежментийг хангахад тохиромжтой гэж үзэж болох уу?

Үгүй

2.1 Технологийн товч тодорхойлолт

Технологийн тодорхойлолт:

Improved cassava production through the use of contour bund stabilized with cajanus cajan, manure application, cover crops (ground nuts) and improved cassava germplasm.

2.2 Технологийн дэлгэрэнгүй тодорхойлолт

Тодорхойлолт:

The technology involves a combination of structural, vegetative and agronomic land use practices aiming at improving production of cassava (Manihot esculenta), improving potential of the soil and environmental function of the land. The technology is among a list of basket of choices of SLM practices recently introduced and adapted to the area by land user and experts working with SCC-Vi Agroforestry an NGO contracted/outsourced by the Tras-boundary Agro-ecosystem Management Project (Kagera TAMP) for provision of SLM advisory and extension services.
Contour bunds are constructed across the sloppy landscapes of average slope 5 – 8 % and are arranged in rows from the top to the bottom of the slope. The average distance between contour bunds is 15 meters. A contour bund is a row of long narrow furrow of average width 90cm and average depth 30cm dug across the slope using simple tools and leveled using A-frame method. Dug soils are piled below the slope to form a long strip earth of fanya chini bund. The average height and width of a bund is 30cm and 45cm respectively. Pigeon pea (Cajanus cajan) are planted on contour bund to make them more stronger and productive. A single stand of pigeon pea has two plants and the distance between stands is 30 cm. Improved cassavas (Manihot esculenta) variety (mkombozi) that are resistant to cassava mosaic virus are planted in rows between contour bunds. Within rows, the space between cassavas is 1meter and between rows is 1meter. Manure application is applied before cassava planting at the rate of 2kgs per each plant hole. Cassava is usually planted on May and is harvested after one year. Cassava is planted together with groundnuts (Arachis hypogea) as a cover crop. Despite of having the nutritional advantage to farmers, pigeon pea and groundnuts also diversifies farmers’ livelihood income and have a key role of improving ecosystem through soil water conservation (prevent unproductive loss of green water) and improve soil fertility (through soil nutrient replenishment) and their after harvest remains are sources of organic matter.

Purpose of the Technology: The purpose of the technology is to:
1) Increase cassava productivity 2) Improved livelihood of the rural poor through diversification of income sources (cajanus cajan, groundnuts and cassava) and 3) conserve and restore ecosystem through soil fertility improvement (replacement of nutrients lost through uptake by plants), soil moisture improvement (by preventing blue water loss through runoff and green water loss through unproductive evaporation) and control of cassava pests and diseases (use of cassava varieties that are resistant to cassava mosaic virus).

Establishment / maintenance activities and inputs: Establishment activities include land preparation, ploughing and harrowing, contour bund construction and leveling using A-frame, manure procurement and application. Maintenance and recurrent activities involves collection of cassava planting materials and planting, vegetative stabilization of the bunds by planting Cajanus cajan, planting of cover crops (groundnuts within cassava farm), weeding/gap filling and harvesting.

Natural / human environment: The natural environment includes crop land dominated with separate annual crops. A combination of structural and vegetative measure (contour bund strengthened and made more productive with Cajanus cajan). Climatic zone is sub humid with 210 length of growing period (LGP). Slope category is moderate lying between 5-8%. Soil texture is gravel sandy loam with medium soil depth.
On human environment, mechanization is dominated by use of handy tools and occasional use of tractors. Production system is mixed (both for subsistence and commercial purposes). Inputs used includes tools (hand hoe, machete, sickles, spade and mattock), light and heavy labour, manure, seeds and cassava planting materials with average annual costs of 1033.47 USD per hectare. Land ownership is individual not titles. The expected average annual gross revenue per hectare accrued from cassava alone is 20580 USD.

2.3 Технологийн гэрэл зураг

2.5 Энэ үнэлгээнд хамрагдсан технологийг хэрэгжүүлсэн улс орон/ бүс нутаг/ байршил

2.6 Хэрэгжсэн хугацаа

Байгуулсан тодорхой оныг мэдэхгүй бол баримжаа хугацааг тодорхойл:

• <10 жилийн өмнө (саяхны)

2.7 Технологийн танилцуулга

Технологийг хэрхэн нэвтрүүлснийг тодорхойл:

• Гадны төсөл/хөтөлбөрийн дэмжлэгтэйгээр

Тайлбар (төслийн төрөл г.м.):

Recently introduced through interventions supported by Tran Boundary Agro-ecosystem management project (Kagera TAMP).

3.1 Технологийн үндсэн зорилго (ууд)

• үйлдвэрлэлийг сайжруулах
• газрын доройтлыг бууруулах, сэргийлэх, нөхөн сэргээх
• үр ашигтай эдийн засгийн нөлөөг бий болгох

3.2 Технологи нэвтрүүлсэн газрын одоогийн газар ашиглалтын хэлбэр(үүд)

Тайлбар:

Major land use problems (compiler’s opinion): Soil erosion caused by rainfall water runoff, low soil fertility due to excessive nutrient plant uptake without replenishment and moisture water stress.

Major land use problems (land users’ perception): Soil erosion, low moisture and low crop productivity.
Type of cropping system and major crops comments: cropping system is largely dominated with annual and perennial cropping and there is also some patches of agroforestry (largely fruit trees like avocados and mangoes).

3.3 Газар ашиглалтын тухай нэмэлт мэдээлэл

Технологи хэрэгжүүлсэн газрын усан хангамж:

• Байгалийн усалгаатай

Жилд ургамал ургах улирлын тоо:

• 2

Тодорхойлно уу:

Longest growing period in days: 120, Longest growing period from month to month: September to December Second longest growing period in days: 90 Second longest growing period from month to month: March to May

3.4 Технологи ГТМ-ийн аль бүлэгт хамаарах вэ

• хөрс/ ургамлын бүрхэвч сайжруулах
• Хөрсний үржил шимийн нэгдсэн менежмент

3.5 Технологийн хамрах талбай

Технологи өргөн дэлгэрсэн эсхийг тодорхойл:

• газар дээр жигд тархсан

Технологи газар нутгийн хэмжээнд жигд тархсан бол түүний эзлэх талбайг дундажаар тооцож тэмдэглэ:

• < 0.1 км2 (10 га)

Тайлбар:

SLM technology was applied in the area under FFS training and partially adopted to some individual farmers fields (FFS members).

3.6 Технологийг бүрдүүлэх ГТМ арга хэмжээ

Тайлбар:

Specification of other vegetative measures: vegetative stabilization of bund using cajanus cajan
Specification of other structural measures: Contour bund construction

3.7 Технологид харгалзах газрын доройтлын төрөл

Тайлбар:

Main causes of degradation: soil management (no use of soil fertlization measures), crop management (annual, perennial, tree/shrub) (Nutrient removal by plants without replenishment), disturbance of water cycle (infiltration / runoff) (no use of structural measures to control rainfal runoff and support infiltration), change in temperature (Soil moisture stress to excessive rise in temperature due to climatic change and variability), change of seasonal rainfall (Moisrure stress aring from reduction of the seasonal rainfall (due to climatic change and variability)), droughts (Soil moistrure stress due to unpredicted droughts), population pressure (Continuous use of the land without fallow periods or fertilility replenishment), poverty / wealth (Farmer incapacity to invest in sustainable land managment), labour availability (Migration of the youth to the town leaving behind the less enegetic elders incapable of managing labour intensive SLM), education, access to knowledge and support services (Lack of knowledge about SLM.), governance / institutional (No deriberate institutional support to SLM)

Secondary causes of degradation: inputs and infrastructure: (roads, markets, distribution of water points, other, …) (Water runoff intensified by nearby road construction)

3.8 Газрын доройтлоос урьдчилан сэргийлэх, сааруулах ба нөхөн сэргээх

Газрын доройтолтой холбоотойгоор Технологи ямар зорилго тавьсан болохыг тодорхойл:

• газрын доройтлоос урьдчилан сэргийлэх
• Хүчтэй доройтсон газрыг нөхөн сэргээх/ сайжруулах

4.2 Техникийн үзүүлэлт/ техникийн зургийн тайлбар

Technical knowledge required for field staff / advisors: moderate (field staff/agriculture advisers are knowledgeable of the principle behind use of contour bund and manuring and therefore can do with short/simple retraining seminars and learning by doing on the job.)

Technical knowledge required for land users: high (Farmers/land users needs thorough understanding of the principle behind use of contour bund and soil fertility replenishment methods. They also need significant shift of mind set.)

Main technical functions: control of dispersed runoff: retain / trap, control of dispersed runoff: impede / retard, improvement of ground cover, stabilisation of soil (eg by tree roots against land slides), increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, increase / maintain water stored in soil, spatial arrangement and diversification of land use

Cover cropping
Material/ species: groundnuts
Quantity/ density: 0.2 ton/ha
Remarks: random

Manure / compost / residues
Material/ species: manure
Quantity/ density: 10ton/ha
Remarks: 1kgs on manure per cassava plant hole

Aligned: -contour
Vegetative material: F : fruit trees / shrubs
Number of plants per (ha): 1000
Vertical interval between rows / strips / blocks (m): 15
Spacing between rows / strips / blocks (m): 15
Vertical interval within rows / strips / blocks (m): 0.6
Width within rows / strips / blocks (m): 0.6

Trees/ shrubs species: cajanus cajani planted as seeds
Slope (which determines the spacing indicated above): 5 - 8%
Gradient along the rows / strips: 5%

Structural measure: Contour bund
Spacing between structures (m): 15
Depth of ditches/pits/dams (m): 0.6
Width of ditches/pits/dams (m): 0.9
Length of ditches/pits/dams (m): 100
Height of bunds/banks/others (m): 0.3
Width of bunds/banks/others (m): 0.3
Length of bunds/banks/others (m): 100

Construction material (earth): dug soils are piled down slope (fanya chini) or above slope (fanya juu)
Slope (which determines the spacing indicated above): 5 -8%
Lateral gradient along the structure: 0%
Vegetation is used for stabilisation of structures.

4.3 Материал болон зардалд хамаарах ерөнхий мэдээлэл

бусад/үндэсний мөнгөн нэгж (тодорхойл):

Tanzanian shillings

Ам.доллар ба үндэсний мөнгөн нэгж хоорондын хөрвөх үнийг тодорхойл (шаардлагатай бол): 1 USD =:

1700.0

4.4 Бий болгох үйл ажиллагаа

	Үйл ажиллагаа	Арга хэмжээний төрөл	Хугацаа
1.	Planting cajanus cajan (perennial shrub)	Ургамлын	once
2.	Construction of contour bunds	Барилга байгууламжийн	once
3.	Purchese tools	Агрономийн
4.	Traction hire	Агрономийн

4.5 Бий болгоход шаардагдсан зардал, хөрөнгийн өртөг

	Зардлын нэр, төрөл	Хэмжих нэгж	Тоо хэмжээ	Нэгжийн үнэ	Зардал бүрийн нийт өртөг	Нийт дүнгээс газар ашиглагчийн төлсөн %
Хөдөлмөр эрхлэлт	Planting cajanus cajan (perennial shrub)	person/days	13.0	1.7	22.1	100.0
Хөдөлмөр эрхлэлт	Construction of contour bunds	person/days	13.0	3.46	44.98	100.0
Тоног төхөөрөмж	Tractor (hired)	pieces	1.0	95.0	95.0
Тоног төхөөрөмж	Tools	pieces	34.0	2.941	99.99	100.0
таримал материал	Seeds	kg	6.0	27.0	162.0
Технологи бий болгох нийт үнэ өртөг					424.07

Тайлбар:

Duration of establishment phase: 1 month(s)

4.6 Арчилгаа/ урсгал үйл ажиллагаа

	Үйл ажиллагаа	Арга хэмжээний төрөл	Хугацаа/ давтамж
1.	land preparation for tractor operation/ cleaning/grass slashing (usually occasional depends on land complexity)	Агрономийн	November
2.	land manual harrowing (after tractor tilling).	Агрономийн	November
3.	manure application	Агрономийн	May
4.	Planting of cassava and groundnuts.	Агрономийн	May
5.	weeding cassava, groundnuts and pigeon pea (done concurrently)	Агрономийн	twice
6.	Harvesting and transportation of groundnuts.	Агрономийн	Jully
7.	Harvesting and transportation of cassava (after one year)	Агрономийн	May
8.	harvesting cajanus cajan	Ургамлын	once
9.	Maintenance of the contour bunds (cleaning of the furrow floor/walls and reshaping of the bunds)	Барилга байгууламжийн	once

4.7 Арчилгаа/урсгал ажилд шаардагдсан зардал, хөрөнгийн өртөг (нэг жилд)

	Зардлын нэр, төрөл	Хэмжих нэгж	Тоо хэмжээ	Нэгжийн үнэ	Зардал бүрийн нийт өртөг	Нийт дүнгээс газар ашиглагчийн төлсөн %
Хөдөлмөр эрхлэлт	land preparation for tractor operation/ cleaning/grass slashing (usually occasional depends on land complexity)	person/days	13.0	1.7615	22.9	100.0
Хөдөлмөр эрхлэлт	land manual harrowing (after tractor tilling).	person/days	13.0	3.55	46.15	100.0
Хөдөлмөр эрхлэлт	manure application	person/days	13.0	3.55	46.15	100.0
Хөдөлмөр эрхлэлт	Planting of cassava and groundnuts.	person/days	13.0	0.88	11.44
таримал материал	Groudnut seeds	kg	200.0	0.4706	94.12	100.0
таримал материал	Cassava cuttings	cuttings	10000.0	0.011765	117.65
Бордоо ба биоцид	Compost/manure	tons/ha	10.0	13.235	132.35
Бусад	Labour: weeding cassava, groundnuts and pigeon pea (done concurrently)	person/days	13.0	3.54	46.02	100.0
Бусад	Labour: Harvesting and transportation of groundnuts.	person/days	13.0	0.88	11.44	100.0
Бусад	Harvesting and transportation of cassava (after one year)	person/days	13.0	2.65	34.45	100.0
Бусад	Labour: harvesting cajanus cajan	person/days	13.0	1.76	22.88	100.0
Бусад	Labour: Maintenance of the contour bunds (cleaning of the furrow floor/walls and reshaping of the bunds)	person/days	6.0	3.83333	23.0	100.0
Технологийн арчилгаа/урсгал үйл ажиллагаанд шаардагдах нийт үнэ өртөг					608.55

Тайлбар:

Machinery/ tools: hand hoe, sickles, machete and mattock, hand hoe, spade, sickles and machete

The costs are calculated per unit hectare.

4.8 Зардалд нөлөөлж байгаа хамгийн чухал хүчин зүйл

Өртөг, зардалд нөлөөлөх гол хүчин зүйл:

Manure application is the most cost determinant factor

5.1 Уур амьсгал

5.2 Гадаргын хэлбэр

Технологи дараах асуудалд хандсан эсэхийг тодорхойл:

• гүдгэр нөхцөл

Гадаргын талаархи тодорхойлолт ба бусад тайлбар:

Altitudinal zone: 1001-1500 m a.s.l. (average attitudinal zonation is 1200 m a.s.l.)
Slopes on average: Moderate (average slope is between 5-6%)

5.3 Хөрс

Боломжтой бол хөрсний бүрэн тодорхойлолт, боломжит мэдээллийг өгнө үү, жишээ нь хөрсний төрөл, хөрсний урвалын орчин/хүчиллэг байдал, катион солилцох чадавхи, азотын хэмжээ, давсжилт г.м.

Soil depth on average: Shallow (Soil depth is between 30 -50 cm)
Soil texture: Medium (Soil texture is sandy loam)
Soil fertility: Low (There is low soil fertility due to nature of soil and wash by rainfall runoff)
Topsoil organic matter: Low (easy washout of organic matter and nutrients due to the nature of the landscape and soil textural characteristics)
Soil drainage/infiltration: Good (The area is dominated by sandy loam soil which characteristically have good drainage and infiltration)
Soil water storage capacity: Medium (characteristics of sandy loam)

5.4 Усны хүртээмж ба чанар

Усны чанар, нөөцийн талаархи тайлбар ба бусад тодорхойлолт:

Ground water table: >50m (is difficult to access ground water table)
Availability of surface water: Also poor/none (There is no surface water in the area. People in the nearby or around the area fetch water from the natural springs found in the lower distant hilly/mountain floors)
Water quality: Good drinking water (water in the lower mountainous floors is in permanent water spring and is good drinking water)

5.5 Биологийн олон янз байдал

Биологийн олон янз байдлын талаархи тайлбар ба бусад тодорхойлолт:

Flora biodiversity is largely dominated by few species of natural grasses dominated by hyperenia rufa and with some limited amount of fauna (ants, earth worms and some insects).

5.6 Технологи нэвтрүүлсэн газар ашиглагчдын тухай мэдээлэл

Газар ашиглагчдын бусад шинж чанарыг тодорхойл:

Population density: 10-50 persons/km2
Annual population growth: 0.5% - 1%

15% of the land users are rich and own 20% of the land (own land greater than 5 acres with reliable off farm income).
40% of the land users are average wealthy and own 40% of the land (own land not more than 5 acres with some pety business).
30% of the land users are poor and own 30% of the land (average land owned is 2 acreas).
15% of the land users are poor and own 5% of the land (land owned is less than 2 acres and rely on casual labourer).

Off-farm income specification: average rich and poor land users largely use the technology. On the other hand rich land users with reliable off farm income and very poor land users who largely relies on casual labourer seldom use the technology.
Market orientation: Mixed (cassava and groundnuts production are meant for subsistance and commercial use)
Level of mechanization: Manual work (manually using simple hand tools dominated by hand hoe)

5.7 Технологи нэвтрүүлсэн газар ашиглагчийн өмчилж буй, эзэмшиж буй, түрээсэлж буй эсвэл ашиглаж буй (ашиглах эрх) газрын талбай

5.8 Газар эзэмшил, газар ашиглах эрх, ус ашиглах эрх

Газар өмчлөл:

• нэгдлийн/ тосгон
• хувь хүн, өмчийн гэрчилгээтэй

Газар ашиглах эрх:

• нэгдлийн хэлбэрээр (зохион байгуулалттай)
• хувь хүн

Ус ашиглах эрх:

• нэгдлийн хэлбэрээр (зохион байгуулалттай)

Тайлбар:

Domestic water sources are for the use of all community but are governed by agreed management rules e.g. it is strictly prohibited to water the animals in domestic water sources and there is clear identification and demarcation of areas used for washing and collecting water for drinking and cooking.

5.9 Дэд бүтэц, үйлчилгээний хүртээмж

6.1 Технологийн талбайд үзүүлсэн нөлөө

Нийгэм-эдийн засгийн үр нөлөө

Үйлдвэрлэл

Орлого, зарлага

Нийгэм-соёлын үр нөлөө

Экологийн үр нөлөө

Усны эргэлт/ илүүдэл

Хөрс

Биологийн олон янз байдал: ургамал, амьтан

Уур амьсгал болон гамшгийн эрсдлийг бууруулах

6.2 Технологийн талбайн гадна үзүүлсэн үр нөлөө

6.3 Технологийн уур амьсгалын өөрчлөлт, цаг агаарын гамшигт үзэгдэлд өртөх байдал ба эмзэг байдал (газар ашиглагчийн бодлоор)

Уур амьсгалын аажим өөрчлөлт

Уур амьсгалын аажим өөрчлөлт

	Улирал	Уур амьсгалын өөрчлөлт/экстрим үзэгдлийн төрөл	Технологи түүний нөлөөг хэрхэн бууруулж байна?
жилийн дундаж температур		Өсөлт	муу

Уур амьсгалаас хамаарах аюул (гамшиг)

Цаг уурын гамшигт үзэгдэл

	Технологи түүний нөлөөг хэрхэн бууруулж байна?
орон нутгийн аадар бороо	муу
орон нутгийн салхин шуурга	мэдэхгүй

Уур амьсгалын гамшиг

	Технологи түүний нөлөөг хэрхэн бууруулж байна?
ган гачиг	муу

Усзүйн гамшиг

	Технологи түүний нөлөөг хэрхэн бууруулж байна?
усны үер (гол)	мэдэхгүй

Уур амьсгалд хамаарах бусад үр дагавар

Уур амьсгалд хамаарах бусад үр дагавар

	Технологи түүний нөлөөг хэрхэн бууруулж байна?
цргалтын хугацаа багасах	сайн

Тайлбар:

Cover crops (groundnuts) where used to provide vegetative cover and to some extent reduce the effect of excessive soil moisture loss due to direct sunlight and by reducing the speed of rainfall runoff.

6.4 Өртөг ба ашгийн шинжилгээ

Бий болгох зардалтай харьцуулахад ямар ашиг өгсөн бэ (газар ашиглагчийн бодлоор)?

Арчилгаа/урсгал зардалтай харьцуулахад ямар ашиг өгсөн бэ (газар ашиглагчийн бодлоор)?

Тайлбар:

At the beginning only slightly positive benefits are realized this is caused by the high investment/establishment costs. But with time benefits are very positive and overcomes establishment costs (non recurrent costs e.g. due to construction of contour bunds).

6.5 Технологи нэвтрүүлэлт

• 50 -иас их %

Боломжтой бол, тоогоор илэрхийл (өрхийн тоо эсвэл бүрхэх талбай):

34 households and 100% of the area covered

Технологи нэвтрүүлсэн хүмүүсээс хэд нь өөрийн хүчээр технологийг хэрэгжүүлсэн бэ, өөрөөр хэлбэл гадны тусламж дэмжлэг авалгүйгээр?

• 10-50%

Тайлбар:

76% of land user families have adopted the Technology with external material support
17 land user families have adopted the Technology with external material support
Comments on acceptance with external material support: 13 members groups participated in 0.25 acre plot of cassava as test crop

24% of land user families have adopted the Technology without any external material support
17 land user families have adopted the Technology without any external material support
Comments on spontaneous adoption: early adopters

There is a little trend towards spontaneous adoption of the Technology
Comments on adoption trend: it is early to give the overall picture of technology adoption as it was recently introduced in April 2013.

6.7 Технологийн давуу тал/боломжууд

Газар ашиглагчдын тодорхойлсон давуу тал/боломжууд
Simple to learn/ farmers gained soil fertilization knowledge.
Farmers gained soil management skills through learning by doing

Эмхэтгэгч, бусад мэдээлэл өгсөн хүмүүсийн өнцгөөс тодорхойлсон давуу тал/боломжууд
The technology contributes in improved crop production and productivity.
Contour bund are stabilized with cajanus cajani which contributes to farmers nutrition and income.
Cover crops (groundnuts) that are grown within cassava are alternative sources of income to farmer before cassava is ready for harvesting and also improves soil fertility and moisture.

6.8 Технологийн дутагдалтай/сул тал/аюул болон тэдгээрийг хэрхэн даван туулах арга зам

Эмхэтгэгч, бусад мэдээлэл өгсөн хүмүүсийн өнцгөөс тодорхойлсон сул тал/ дутагдал/ эрсдэл	Тэдгээрийг хэрхэн даван туулах вэ?
High initial investment costs. Farmers are capital strapped and have low investment capacity.	Raise farmers investment capacity through establishment and their direct engagement to rural micro finance institutions (SACCOS and VICOBA).
Unintended results due to the negative effects of climatic change and variability	Find means and ways to mitigate adapt climatic change and variability (e.g. use of drought resistant varieties).
Contour bund construction is labour intensive and can not be performed by older people who lacks physical strength and energy.	Make sure that FFS groups compose a balance of youth and elders who can play complementary roles to each others.

7.1 Мэдээлэл цуглуулсан арга/эх үүсвэр