Land resources of central Nigeria Agricultural development ...

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7a Plantations for poles and firewood in forest reserves Distance Firewood cannot be transported far before the cost of transport plus the costs of plantation establishment exceeds the price that can be obtained for the firewood in the market. Ferguson (1973) has estimated that for a plantation growing eucalypts in the Northern Guinea Savanna Zone the critical economic distance that firewood and poles can be transported is about 50 km. A circle of radius 50 km drawn round Kaduna takes in Anara, Rigachikun, Afaka, Mando Road North, Kaguru, Kadau and Tukuruwa Forest Reserves (Anara Forest Reserves has been recommended for timber production). The circle around Zaria takes in the Fatika, Kakangi, Guga, Maje, Kabama, Mairabo and Nasarawa Forest Reserves. In Table 51, forest reserves are listed by land system and administrative unit which are suitable for pole and firewood production and Text Map 5.16 shows their location. Area The area of plantation needed for provision of an adequate supply of fire wood and poles may be determined in the same way as that required for timber production. Estimates of firewood and pole requirements in 1972, 1982 and 1992 have been obtained by Thulin (1970), Grut (1972) and Ferguson (1973) . Their findings are given in Table 53 below. 114
TABLE 53 Estimates of volume of poles and firewood required in Kaduna City Kaduna Zaria and Zaria 3 Volume x 1 OOO m 1982 3 Volume x 1 000 m 1992 Poles Firewood Total Poles Firewood Total 13.4 14.8 280 230 Source: Ferguson (1973) 293.4 244.8 16.4 18.0 400 280 416.4 298.0 Assuming that Eucalyptus is planted,the estimated potential yield of 3 ~ 10 m /ha/a will, on a rotation of 7 years, provide a final yield of 70 m /ha. The total area required to meet all of Kaduna's 1982 firewood and pole requirement is 29 340 ha and for the 1992 requirement is 41 640 ha (annual felling area of 4 191 and 5 949 ha, respectively). Similarly, for Zaria, the 1982 area is 24 480 ha and the 1992 area is 29 800 ha (annual felling area of 3 497 and 4 257 ha, respectively). However some produce will continue to come from natural woodland so that plantation areas will not need to be developed to meet the total requirement. For Kaduna, the reserves that should be made into firewood and pole plantations are listed in Table 54. TABLE 54 Forest reserves in the vicinity of Kaduna recommended for Forest reserve Afaka Anara Rigachikun Kaguru Kakau Tukuruwa Mando Road North Mando Road South conversion to firewood and pole plantations Area ha 10 919 part 5 543 12 432 673 818 12 121 12 329 Land system 422 . 422, 426 422 422 422 422 421, 422 421, 422 115 Yield prediction m^/ha/a Euc. 10 Euc. lO Euc. 10 Euc. lO Euc. lO Euc. lO Euc. lO Euc. lO
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f yrce Styd Land resources of centr
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Land Resources Development Centre L
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List of volumes Title: land resourc
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Contents LIST OF TEXT MAPS ix LIST
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TEXT MAPS following page 5.1 Projec
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Abstract and keywords ABSTRACT 2 Th
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Parti
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SUMMARY 2 The Kaduna Plains (39 850
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all statements are generalised of n
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REPORTING As the project area is so
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7°00' ii°30'ir SvA 7%\ 11°00' 10
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necessary before a realistic assess
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Part 2 Aspects of the environment T
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11°00' 10°30' 10°00' TEXT MAP 5.
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Table 1. During the rainy period, c
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The general relief features can be
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7°00' 7°30' 11°30' 11°00' 10°3
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KADUNA PLAINS-PHYSIOGRAPHIC UNITS T
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The landforms, therefore, being pre
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It is, therefore, impossible to pre
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low but well humified almost everyw
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example, have a characteristic comm
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Areas with more than ^60% cultivati
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1. The sorghum/maize farming system
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(now known as local government area
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Fodder trees The woody vegetation a
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e stocked more lightly and 113-4 ha
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Since the beginning of the Sahelian
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Part 3 Environmental limitations to
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CLIMATIC FACTORS IN RELATION TO CRO
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TABLE 5 Sunnary of main characteris
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TABLE 7 Dominant-soil chemical char
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TABLE 8 Dominant slope and range of
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TABLE 10 Summary of main characteri
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TABLE 11 Soil physical limitations
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a limit of 3% (approx. 1.5°) for m
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LAND SYSTEMS WITH FOUR CROP OPTIONS
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2. Soil chemical characteristics So
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Forestry Most land systems have an
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2. Soil chemical characteristics In
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Forestry Poles and firewood are rea
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2. Soil chemical characteristics As
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TABLE 30 Summary of main characteri
Page 93 and 94: TABLE 31 Soil physical limitations
Page 95 and 96: TABLE 33 Dominant slope and range o
Page 97 and 98: TABLE 35 Summary of main characteri
Page 99 and 100: TABLE 37 Dominant-soil chemical cha
Page 101 and 102: Forestry The land system is extensi
Page 103 and 104: Part 4 Development possibilities TY
Page 105 and 106: TABLI A4 Agricultural development p
Page 107 and 108: Present grazing status and cattle m
Page 109 and 110: KADUNA PLAINS TEXT MAP 5.10 FOREST
Page 111 and 112: though some inputs should be made a
Page 113 and 114: organised into large blocks. All th
Page 115 and 116: iii. Continuation of the build-up o
Page 117 and 118: In sparsely cultivated areas the mo
Page 119 and 120: Management Due to the high capital
Page 121 and 122: slopes, so that the most favourable
Page 123 and 124: The cooperation and participation o
Page 125 and 126: KADUNA PLAINS TEXT MAP 5.12 AREAS S
Page 127 and 128: 2. Main wet- and dry-season grazing
Page 129 and 130: TABLE 46 Areas suitable for locatio
Page 131 and 132: Cattle ranches The ranches will 'gr
Page 133 and 134: Fulani) 910 kg, cross bred Bunaji-F
Page 135 and 136: KADUNA PLAINS AREAS SUITABLE FOR CA
Page 137 and 138: provided they are sited within abou
Page 139 and 140: In Table 50 the estimated 1992 cons
Page 141 and 142: TABLE 51 Land systems in forest res
Page 143: The calorific value of firewood Bef
Page 147 and 148: TABLE 56 Forest reserves recommende
Page 149 and 150: KADUNA PLAINS TEXT MAP 5.1 6 FOREST
Page 151 and 152: From these data, a maximum total bi
Page 153 and 154: Watershed Management Project In the
Page 155 and 156: 4. A socioeconomic study of Fulani
Page 157 and 158: transport available to the extensio
Page 159 and 160: Part 5
Page 161 and 162: FOOD AND AGRICULTURE ORGANIZATION (
Page 163 and 164: WALKER J & ROWNTREE P R (1976) The
Page 165 and 166: Appendix 1 Interpretation of soil d
Page 167 and 168: TABLE 2 Soil drainage classes defin
Page 169 and 170: TABLE 4 Soil texture as a factor li
Page 171 and 172: The assessment of coarse material a
Page 173 and 174: TABLE 8 Limitations due to phosphor
Page 175 and 176: TABLE 9a Nature and degree of limit
Page 177 and 178: it is classed as limitation categor
Page 179 and 180: Many of the silty or fine sandy sur
Page 181 and 182: 8. In practice, a farmer is unlikel
Page 183 and 184: Appendix 4 Evaluation of the growth
Page 185 and 186: limitation score. This information
Page 187 and 188: *9 AITCHISON P J & GLOVER P E (1970
Page 189 and 190: 24 JENKIN R N, ROSE INHES R, DUNSMO
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