Cabbage

CENTRAL PLATEAUX (PLAINS): Flat to gently undulating.In some areas there are some rocky hill- footslope at medium altitude,developed on granites, sandstone,sheles, quartizites and gneisses. Few flat plains at medium altitude developed mainly on alluvium.Soils are well drained moderately deep to deep, red, yellowish red or orange sands and clay loams to loramy sands with sandy loams in depth. The structure is poor and very low natural fertility. Altitude: 6000-1300 m.a.s.l, Rainfall (mm/year): 800-1400 monomodale. Temperature: 18C-30C

HIGH PLAINS AND PLATEAUX: Mainly flat and undulating to rolling plains and plateaux at high altitude, developed on granites and gneisses. In other areas there are strongly dissected hills,mountaineous topograph, volicanic land forms at high altitudes. Mojor soils are well drained deep brown, yellowish, sand loam, sand clays to clay with moderately to strong structure. The soils have moderately to high natural fetility. Altitude: 500-2400 masl. Rainfall (mm/year): 600-2400. Temperature: 19-25 C.

RUKWA - RUAHA RIFT ZONE - ALLUVIAL FLATS: Flat to undulating plains, covered by riverine or lacustrine alluvium or alluvium fans, levees, piedmonts and by variable flooding conditions. Soil affected by salinity of varying colour, texture, structure, consistence and drainage. Its fertility and moisture storing characteristics adversely affected by presence of exchangeable sodium and soluble salts.In some areas high enough to interfere with growth of most crops.The soils are well drained, moderately deep to deep, reddish and yellowish sandy clay loams and sandy clays. Structure is weak with poor natural fertility. Other areas have poorly drained, deep, dark grey or grey brown often mottled clays.They have higher clay content than the young olluvial clays ( clay 40%-70%) and of also lower natural fertility. Few areas have soils of high natural fertility, imperfectly to poorly drained soils. Altitude: 800-1400 masl. Rainfall (mm/year): 800-2000. Temperature: 18C-30C

VOLCANOES AND RIFT DEPRESSIONS : Mainly rolling to hilly, dissected plateaux at high altitude developed on volcanic ash, lavas and on gneisses. In some areas there are volcanic mountain with gental to steep ash and lava slopes streching from medium(600-1600masl) to high altitude (2300 masl). At medium altitude on encounters locostrarine plains, extensive salt and soda flats. The soils are well drained, in some areas heterogenous soils types with propotion of fertile, deep yellowish, redish sand clay to moderate to strong structure. In some areas of the zone the soils are of varying coulor, texture and structure consistence and drainage. Their fertility stutus and moisture storage proparties are advesily affected by presence of exchangeble sodium salt or soluble salts at level that are high enough to enterfere with growth of most crops. Altitude: 900-2400 masl. Rainfall (mm/year): 400-1600. Temperature: 22C-30C