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New GATE Publications

Primary School Agriculture Vol. 1: Pedagogy

Agriculture as a subject in primary school is treated in a systematic way. A number of reasons for including agriculture in the primary school curriculum are given, with a clear preference for a science-oriented approach. Curriculum design and the structure of a scheme of work are discussed and a number of very practical hints on school farm work are given. A number of lesson notes using various formats conclude the book.

The book is based on the author's practical experience in Africa.

Bergmann, Herbert: "Primary School Agriculture. Vol. I: Pedagogy". 1985. 144 pages. English.

DM 24.50. ISBN 3-528-02013-X. A

Primary School Agriculture

Vol. ll: Background Information

This volume provides factual background for volume 1. This is meant to serve as a reforce book for the teacher who wants to structure the teaching of agriculture according to the ideas expressed in volume I. Its emphasis is on African subsistence and tree crop farming in the humid tropics. It deals specifically with traditional farming and a number of variants of modern low-input-farming. The most important food crops and the tree crops cocoa and coffee are documented. Crop storage of grains and tubers is also discussed.

Bergmann, Herbert and Richard Butler: "Primary School Agriculture. Vol. ll: Background Information ". 1985. 190 pages. English.

DM 29.50. ISBN 3-528-02014-8.

Small Scale Production of Lime for Building

Lime has been produced and used in many parts of the world for hundreds of years. It is a cementitious material which can be produced to an adequate quality by simple means and in sufficiently small quantities to suit the requirements and conditions of the rural areas of developing countries.

This handbook is a practical guide for the project planner and implementation officer covering the project investigation and implementation process, as well as technical and production aspects of low-technology lime production on a small scale.

Spiropoulos, John: "Small Scale Production of Lime for Building". 1985. 80 pages. English. DM 19.80. ISBN 3-528-02016-4.

The books mentioned here are obtainable from your bookseller or from GATE. For orderers from developing countries they are free ofcharge.

Solar Rice Drying Project

A simple, inexpensive solar rice dryer for use in the wet season has been designed and tested. The project was divided into two phases: Phase I in which tests were undertaken on the campus of the Asian Institute of Technology to ascertain the effects of modifications in the design, and Phase II in which the dryers were field-tested on rice farms in the central plain of Thailand.

The solar rice dryers tested on farms had a capacity of one metric tonne of paddy. They were made of bamboo poles and clear plastic sheeting, and cost about US $ 150 to build. The performance of the dryers in the field was the same as that found in the campus tests. Shortcomings in the dryers revealed by the field tests included: degradation of the plastic sheeting, the need fore higher capacity than one tonne per batch, and rehumification of the paddy in the bed at night during wet weather. In the off-season the farmers often used the dryers for other products besides rice.

The report contains a verbatim account of the opinions voiced by farmers in a workshop discussion held after the conclusion of the project.

Exell, R. H. B. and Sompong Boonthumjunda: "Solar rice drying project (Thailand)", AIT Research Report No. 171, published by RERIC (Renewable Energy Resources Information Center), 1984, English. Price per copy US $ 10 for developing countries and US$ 15 for developed countries. Available from: Asian Institute for Technology, P.O. Box 2754, Bangkok, Thailand.

A Village-size Solar

Refrigerator

The work described in this report is the latest phase in a continuing series of experiments and design efforts on solar powered intermittent ammonia-water refrigeration systems undertaken by the first two authors in the Asian Institute of Technology over the past few years. In particular, it is the immediate sequel to the work reported in AIT Research Report No. 126 entitled Design and Testing of a Solar-powered Refrigerator.

The present report describes the new village-size unit developed and the test done on it. Because the previous report (No. 126) described the operating principles and the design calculations of the earlier models in detaiI, the present report wilI be confined to an outline of the major design features (with most attention being given to those that are new) together with the results of the experimental tests made. In addition, details of a mathematical model of the system's operating are presented because of the value of the model in predicting the performance of different designs under a variety of weather conditions.

Exell, R. H. B., Sommai Kornsakoo and Somchai Oeapipatanakul: "Village-size Solar Refrigerator", AIT Research Report No.172, published by REFIC (Renewable Energy Resources Information Center), 1984, English. Price per copy US $ 10 for developing countries, and US $ 15 for developed countries. Available from: Asian Institute of Technology, P.O. Box 2754, Bangkok 10501,

Thailand.

Site-oriented Agriculture in Developing Small Farms in the Tropics and Subtropics

This is the title of an interim report on the topic "side-oriented agriculture" now published by the GTZ Department for Agriculture, Health and Rural Development. This report is in two sections. The first section, Part A, is a contribution to discussions on fundamentals, while Part B provides an overview of activities in the field of site-oriented agriculture.

The most valuable feature for users of this publication will be the list of adresses and the bibliography included in this book. The bibliography alone comprises 147 titles, and a keyword index simplifies the location of references to specific topics. The relevant periodicals as well as institutions and organisations dealing with site-oriented agriculture are also listed. The organisations listed are located not only in Europe but also in Africa, Asia, North and South America and even Australia. The book is supplemented by a list of all GTZ projects involving site-oriented agriculture.

Kotschi, Johannes and Reinhard Adelheim: "Standortgerechte Landwirtschaft zur Entwicklung kleinbauerlicher Betriebe in den Tropen und Subtropen", Eschborn 1984, 226 pp., numerous tables and black-and-white photos, Published by: Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH. ISBN 3-88085-264-2.

This publication can be ordered free of charge from: Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH, Fachbereich 113, attn. Dr. Hoesle, Dag-Hammarskjold-Weg 1, D-6236 Eschborn 1, West Germany. The book is only available in German.

Hand Drilled Wells

The TOOL Foundation will distribute an extensively illustrated manual on hand drilled wells, published by the Rwegarulila Water Resources Institute in Tanzania.

Subjects covered are: well hydraulics; origin and occurrence of unconsolidated sediments; site investigation; criteria for borehole approval; tube well design; well drilling operations; installation of filter pipe and gravel pack; development, pump test and backfilling; construction of pumps and wells.

In the annexes, equipment and standards, etc. are described. The manual is the product of 3 years' field and classroom experience in different well projects.

Blankwaardt, Bob: "Hand Drilled Wells". A manual on siting, design, construction and maintenance. 1984, 132 pp., ill. This publication is available from the TOOL office for Dfl. 19.50 (plus postage). Address: TOOL Foundation, Entrepôdok 68A/ 69A, 1018 Amsterdam, The Netherlands.

Erratum

On page 7 of "gate" 2/85 Dr. Ulrich Knobloch is named es the author of the article "Health for the Community by the Community". This is incorrect. The article was in fact written by Dr. Eckhart Kleinau, field manager of the project "Primary Health Care in the North-West and South-West Province of Cameroon". The fotos published in the article were also taken by Dr. Kleinau.

German Appropriate Technology Exchange

Centro Alemán pare Tecnologias Apropiadas

Centre allemand d'inter-technologie appropriée

Deutsches Zentrum for Entwicklungstechnologien

GATE is not only the name of this quarterly. It also stands for German Appropriate Technology Exchange. founded in 1978 as a special division (Division 21) of the government-owned Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ) GmbH (German Agency for Technical Cooperation).

Tasks

GATE is a centre for the dissemination and promotion of appropriate technologies for developing countries.

GATE defines "appropriate technologies" as those which appear particularly apposite in the light of economic, social and cultural criteria. They should contribute to socio-economic development whilst ensuring optimal utilization of resources and minimal detriment to the environment. Depending on the case at hand a traditional, intermediate or highly-developed technology can be the "appropriate" one.

Activities

GATE focusses its work on three key areas:

- Technology exchange (Section 211): Collecting, processing and disseminating information on technologies appropriate to the needs of the developing countries; ascertaining the technological requirements of Third World countries; support in the form of personnel, material and equipment to promote the development and adaptation of technologies for developing countries.

- Research and development (Section 212): Conducting and/or promoting research and development work in appropriate technologies.

- Cooperation in technological development (Section 213): Cooperation in the form of joint projects with relevant institutions in developing countries and in the Federal Republic of Germany.

For several years GATE has been an active supporter of the SATIS network (Socially Appropriate Technology International Information Service) and has entered into cooperation agreements with a number of technology centres in Third World countries. In addition, GATE participates regularly in exhibitions and trade fairs both in the Federal Republic of Germany and abroad.

Service

GATE offers a free information service on appropriate technologies for all public and private development institutions in developing countries, dealing with the development, adaptation application and introduction of technologies.

N.B.: The more precise your query, the better the answer GATE can give you. At the same time you help us cut down costs. Thank you!

Deutsches Zentrum fur Entwicklungstechnologien

Dag-Hammarskjold-Weg 1

D-6236 Eschborn 1

Federal Republic of Germany