These are used for storing yam tubers. The method involves the tying of yam tubers with strong twine to small vertical poles, which are supported by strong horizontal poles, also tied to solid stakes. Shade is needed over the barn to prevent the tubers from excessive drying
Figure 3.7.1: Yam Tubers in a Barn.
Advantages of the barn method
1. It is cheap to construct'as forest woods and ropes can readily obtained (especially in the high forest).
2. The yam tubers do not get rotten quickly because they are raised from the ground
3. It is easy to detect any tuber that is going bad.
4. It can be
1. The method is laborious
2. Yam tubers are affected by weather conditions. For example tubers become dehydrated after
2. Boxes and Underground Pits or Trenches
These are used for storing cassava tubers. Yam tubers can also be ill lor a short time in underground pits immediately after harvest. Underground pit is most common for storing cassava tubers. Under this method, layers of palm fronds are laid at the bottom of the pit. Then one or two layers of cassava tubers which must be harvested it bruise, are arranged on top of the fronds. Another layer of is laid and tubers arranged on top. This procedure is followed ill tin pit is filled or the tubers to be stored are finished. The top is llh covered with a layer of palm fronds and about 10 cm thick of soil.
The use of boxes has the same procedure, except that moist saw dust is used in place of palm fronds. The moist saw dust is placed round on top of the tubers and the tubers are also arranged in layers.
Advantages storage system of barn
1. It can be used to store cassava tubers up to 6 weeks.
2. The method is cheap and not too laborious.
3. If boxes are used, they can be transported.
Disadvantages barn storage of cassava
2. It cannot keep tubers for a very long time.
These are used for storing dry grains such as maize, guinea corn and rice. They are made of cement, metal or aluminium and are tall, round, looking like towers.
Figure 3.7.2: Silo used for Storing Dry Grains.
1. They protect the products from insects and rodents.
2. They can accommodate large quantities of grains.
3. Because they are aur-right, fumigants can be safely used to protect the grains.
4. They can test for Very long time.
1. Silos are very expensive to construct
2. They are not movable. . .
3. Grains could mould if not dried properly.
These are also used to store maize particularly dried unshelled cobs which have been dehusked. Cribs consist of side poles covered by wiwe—mesh or lined closely with thatch or zinc.
Figure 3.7.3: Maize Cobs in a Crib.
1. It is cheap and easy to use.
2. Grains are protected from rodents and birds.
3. The method can keep maize for a long time.
1. It cannot accommodate large quantities at a time
2. Does not protect the grains from insects or weevils.
5. Bags or Sacks
These include jute and hesian bags as well as polythene bags. They are used for storing products such as garri, melon, rice and other grains. They can be kept in rooms or store while raised from the ground.
1. They are simple and cheap to use.
2. Different sizes are available for use for different quantities of products.
3. They can be used for a wide variety of products.
4. They make transportation of products easy.
2. IMPORTANCE OF AGRICULTURE
3. SUBSISTENCE AGRICULTURE
4. COMMERCIAL AGRICULTURE
5. PROBLEM OF AGRICULTURAL DEVELOPMENT
6. SOLUTIONS TO POOR AGRICULTURAL DEVELOPMENT
7. AGRICULTURAL LAWS AND REFORMS
8. ROLES OF GOVERNMENT IN AGRICULTURAL DEVELOPMENT
9. AGRICULTURAL POLICIES
10. PROGRAM PLANNING IN AGRICULTURE
28. TYPES OF AGRICULTURAL CO-OPERATIVES
29. LAND AND ITS USES
30. AGRICULTURAL LANDS
31. NON-AGRICULTURAL LANDS
32. LAND USE POLICIES
33. WHAT IS AGRICULTURE
35. WILDLIFE CONSERVATION
36. FACTORS AFFECTING LAND AVAILABILITY
39. BIOLOGICAL FACTORS
40. SOCIAL-ECONOMIC FACTORS
41. ENVIRONMENTAL FACTORS AFFECTING AGRICULTURAL PRODUCTION
42. CLIMATIC FACTORS AFFECTING AGRICULTURAL PRODUCTION
47. SOLAR RADIATION
48. BIOTIC FACTOR AND AGRICULTURAL PRODUCTION
52. SOIL MICRO-ORGANISMS
53. SOIL PH
54. ROCK FORMATION
55. IGNEOUS ROCK
56. SEDIMENTARY ROCKS
58. SOIL AND ITS FORMATION
132. UNDER GROUND SYSTEMS
133. FARM POWER AND MACHINERY
134. SOURCES OF FARM POWER
135. HUMAN SOURCE
136. ANIMAL SOURCE
137. MECHANICAL SOURCE
138. WIND POWER SOURCE
139. SOLAR POWER SOURCE
140. ELECTRICITY POWER SOURCE
141. FARM MACHINERY
142. FIELD MACHINES