Credits: Biovision-Infonet Water from road catchments should not be used for domestic consumption because the water from murram and dirt roads contains dung and other pollutants, while water from tarmac roads contains tar which is harmful to peoples’ health. Water for domestic use should be collected from either roofs, rocks or drawn from shallow ground […]
Monthly Archives: February 2020
Storage of Agricultural Water in Ground Tanks
Credits: Biovision-Infonet There are two main types of water tanks, namely: 1) Ground tanks that are built below the ground level. These are mainly used for storage of dirty run-off water from roads and compounds. Ground tanks can also be used as storage for clean domestic water if the tanks are roofed and connected to gutters […]
Storage of Agricultural Water in Earth Dams
Credits: Biovision-Infonet Cut-Off Drain Cut-off drains deliver rainwater run-off from roads onto farmland where it sometimes creates erosion and deep gullies. This potentially destructive practice can be changed to a gain for the farmers by diverting the water into ground tanks, small earth dams or land for seasonal irrigation. Here a cut-off drain diverts run-off […]
Introduction to Water Storage
Credits: Biovision-Infonet Short description: This datasheet describes methods to safely and hygienically store collected water, as well as how to build and repair water tanks, oil drums and jerry cans. Introduction Rains produce plenty of clean water running off roads, roofs, and rocks. This rainwater can be stored for the dry seasons when it is […]
Rain Harvesting Information Source Links
Credits: Biovision-Infonet Agarwal, A. and Narain, S. (Eds) (2003). Dying wisdom. Rise, fall and potential of India’s traditional water harvesting systems. State of India’s Environment: a citizens’ report. Centre for Science and Environment, New Delhi. ISBN 81-86906-07-X www.cseindia.org Anschuetz, J. and Nederlof, M. (Eds) (2001). Water harvesting and soil moisture retention. CTA Agrodok-series No.13. Technical Centre […]
Storage Reservoirs
Credits: Biovision-Infonet The required storage capacity of a water reservoir depends on: The daily required volumes and quality of water measured in litres. The length of the dry seasons during which these volumes and quality of water are required. Example on water demand for a homestead: While the number of days in a dry season can be […]
Gutters
Credits: Biovision-Infonet Many rainwater harvesting installations do not perform as well as expected because of unsatisfactory gutters. It is therefore important to give careful attention to the materials used, the way the gutters are fabricated and the way they are installed. Ways of fabricating and installing low-cost gutters are described below. Semi-circular gutters The best […]
Sheep Information Source
Credits:Biovision-Infonet Baker R.L. (1998). Genetic resistance to endoparasites in sheep and goats. A review of genetic resistance to gastrointestinal nematode parasites in sheep and goats in the tropics and evidence for resistance in some sheep and goat breeds in sub-humid coastal Kenya. FAO/UNEP Animal Genetic Resources Information. 24:13-30. Baker R.L., Mwamachi D.M., Audho J.O., Aduda E.O. and Thorpe W. (1999). Genetic resistance to gasto-intestinal nematode […]
Evaporation, Seepage and Leakage
Credits: Biovision-Infonet Almost every type of storage reservoir loses some of its stored water to evaporation, seepage or leakage. Evaporation losses Open water reservoirs, such as; tanks without roofs, ponds, earth dams and rock catchment dams, lose water due to evaporation. In hot and windy climates the evaporation rate may be over 3 mm per day which is […]
Pig Disease prevention and veterinary treatment
Credits:Biovision-Infonet With regard to disease treatments of organic sows or boars: if an organic sow or boar is treated with more than two courses of allopathic treatments in a year (or a piglet in a lifetime) it loses its organic status and must be reconverted or slaughtered as non-organic (vaccinations, treatments for parasites and statutory […]