Physical and Chemical Properties of Vertisols and their Management uri icon

abstract

  • Vert~sols, because of their high water-holding capacity, are suited to drylandcrop production in =mi-arid environments with uncertain and heavy rainfall.Selected physical and chemical properties of Vert~sols that affect theirmanagement for crop production are discussed. Due to their high clay content,the physical properties of Vertisols are greatly influenced by moisture content;usually, thew soils an too sticky and unworkable when wet, and very hardwhen dry. The soil moisture range in which the physical condition of Vertisols issultable for tillage and planting operations is quite narrow. Deep Vertisols haveimpeded drainage in the rainy season with consequent loss of trafficability;poor air-water relations are suspected. Land management practices thatfacil~tatdt rainage and improve aeration, water intake and permeability of theseso~lnse ed to be evolved. Though generally of low fertility status, Vertisols offeropportunilics for better crop production in semi-arid areas with erratic rainfallcompared with other soil orders found in these regions; this is mainly due totheir high moisture-holding capacity which allows crops to grow or survive forlonger periods

publication date

  • 1982