1. 1990-01-01 Bridges are a part of the transportation system of a region. They are used to span an obstacle like a stream or chasm. Bridges make the system more efficient either by saving travel distance or by enabling vehicles or pedestrians to reach places that were previously inaccessible. There are four...
  2. 1990-01-01 The purpose of this manual is to outline, in as simple a manner as possible, the details of making and burning clay brick suitable for domestic building. The scope of the manual is confined to "cottage industries"; it does not cover large commercial production such as is known in the United...
  3. 1984-01-01 People discovered bow to use clay over 20,000 years ago. The basic principles of shaping, drying, and firing clay are still the same today as they were then. The only significant changes since the discovery of clay have been the identification of additional clay materials and improvements in the...
  4. Globally, drying is the most widely used method for preserving foods for use in the home or for sale. When drying foods such as fruits, vegetables, spices, herbs and nuts value is added by dryingand in such cases an investment in improved drying technologies may be economically viable. This...
  5. 1989-01-01 Production, Processing and Marketing Tomato is one of the most widely cultivated crops in the world. It is an important source of vitamins and an important cash crop for smallholders and medium-scale commercial farmers. This Agrodok focuses on good practices for growing a healthy tomato crop and...
  6. 2005-01-01 Oyster, Shiitake and Wood Ear Mushrooms This Agrodok contains detailed information on how to grow three kinds of mushrooms: oyster, shiitake and wood ear mushrooms. These mushrooms are rather easy to grow on a small scale. Cultivation of the common white button mushroom and of the rice straw...
  7. 2007-01-01 Agaricus and Volvariella Mushrooms contain a lot of proteins and minerals, several B vitamins and are regarded as a healthy food or food supplement. Moreover, due to certain chemical compounds valued for their medicinal properties, mushrooms gain more and more interest from the health food...
  8. 2004-01-01 With Variety Improvement of Cereals and Pulses Seed production and the maintenance of crop cultivars by small farmers is a subject that has attracted increasing attention over the past decade. The increasing dominance of large multinationals in the seed trade, the controversy over genetic...