Scientific research

Technology of production and application of biohumus (vermicompost)

Author: Knowledge Management in CACILM Phase II, ICARDA.

Definition of technology:

Biohumus or caprolit is obtained by processing of fresh manure by red California worms in the special trench.

Brief summary of technology:

As a valuable organic fertilizer, vermicompost is used to increase soil fertility and crop yields. Technology of vermicompost production was proposed by the public fund (PF) group "CAMP-Alatoo" under the leadership of Kalmurat Kosaliev.

To process manure by Californian worms and to obtain a vermicompost, a trench is dug with a length of 3 m, width of 1.2 m and depth of 1.5; sides (but not bottom) of the trench are cased with concrete. The trench sides are enclosed with fence to protect the worms from poultry eating.

In spring (in May) fresh manure with a height of 30 cm was loaded in the trench, to which 5 kg of Californian worms were released. Worms eat the organic manure and actively process it.

Manure mass should be moist, and therefore during the hot season it should be watered once a week, keeping the humidity at 60-70%. Due to raising temperature inside the pile of manure, weed seeds lose germination ability.

The worms process the fresh manure within 20-25 days, and during this period it acquires a dark color and crumbly texture. Worms are separated from the vermicompost through a metal mesh and are moved to the other end of trench, while free part of the trench is filled with a fresh manure with a height of 50 cm. This cycle is repeated every 20-25 days before the onset of cold weather. With the onset of cold weather trench surface is covered with straw, leaves with a height of 30 cm, to prevent it from freezing. In the spring production process of the vermicompost is resumed. When the worms are excessively multiplied they are separated to the other production sites. The farmer applies the processed mass of vermicompost as organic fertilizer under potatoes, carrots, tomatoes. Vermicompost application rate is 2.5-5 t/ha. Systematic application of vermicompost causes significant improvement of the soil structure of the fields.

Figure 1. Farmer Koshaliev K. describes the technology of vermicompost production (photo: A.J. Asanalieva).

Figure 2. The garden plot of the farmer fertilized by vermicompost after harvest of potato (photo: A.J. Asanalieva).

Figure 3. Technical scheme of the trench

Location: Sokuluk district, Chuy province, Kyrgyz Republic.

Area of technology application: 0.2 ha.

Stage of intervention: alleviation / reduction of land degradation.

Main land use issues and the main causes of land degradation:

Increased prices for fertilizers, pesticides, seeds and land degradation.

Main technical features of technology:

Improving soil structure, increasing organic matter, nutrients (nitrogen).

Type of land use Conservation measures

Arable land.

Growing of perennial (non-forest) crops - Вм(Cp).

Mixed land.

Agropastoralizm (cropland and pasture land) - Сп(Mp).

Agronomic measures:

A1: Vegetation / soil cover;

A2: Organic matter / soil fertility.

Environment

Habitat Anthropogenic environment

Average annual rainfall: 250-500 mm.

Altitude (meter above sea level): 1500-2000 m.

Landscape: hill slopes.

Slope (%): 5-8%.

Soil fertility: average.

Humus content in arable horizon: 1-3%

Natural soil drainage/infiltration: good.

Size of land area (ha): 10 ha.

Landholder: farmer households.

Land ownership: private.

Water use rights: through water user associations (WUA), and state manage the irrigation systems on relevant payment.

Market orientation: mixed farming (subsistence and commercial).

Assessment

Impact of technology

Main advantages:

- the technology is simple to use;

- the technology provides ecologically clean organic fertilizer;

- vermicompost gives a high effect to improve soil structure and its fertility;

- increases crop yields.

Main disadvantages:

- the technology requires skills;

- sustaining vermicompost production takes time, which households do not have.

Acceptance/adoption of technology: There are 30 sites (households) in the village. Two out of 30 households have applied this technology in the area of 0.20 ha (0.10 + 0.10 ha) from possible 10 ha.

Reference(s): WOCAT database. Code of the technology: T_KYR006ru.

Compiled by: Abdybek Asanaliev, Kyrgyz National Agrarian University, CACILM MSEC. Date: 27.12. 2011.

Contact: Abdybek Asanaliev, Kyrgyz National Agrarian University.

Address: Mederova str. 68, Bishkek, Kyrgyzstan.

Email:  asanaly61@mail.ru

Name of person(s) collected this description: Tatyana Hamzina, Chief specialist on soil reclamation studies and irrigation regime. UZGIP LTD.

Address: 44, Navoi str., Tashkent, Uzbekistan.

Tel.: +998 90 9945654, Email: tatyana_khamzina@mail.ru

Search

Announcement

Publications



Flag Counter

Working group | Site map | Feedback | CACAARI | TSAU

This site is created with financial supporting of the US Embassy-Tashkent and maintained by Working Group,
pages are supported by Tashkent State Agrarian University and CACAARI in co-operation with Program Facilitation Unit (CGIAR-CAC) / ICARDA-Tashkent.