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Physical properties of some highveld Vertisols
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K. Snyman --- , M.V. Fey --- Department of Soil Science and Agrometeorology, A. Cass --- Department of Soil Science and Agrometeorology,Surface (0–20 cm) soils were sampled at 100 m intervals along a 3 km transect through Vertisols derived from dolerite and Ecca group mudstone near Standerton, Transvaal. The two geologically correlated soil bodies, which historically appear to have formed the... -
Pedogenic differences between two adjacent basalt-derived soil profiles 1. Textural and chemical characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Bühmann --- , Republic of South Africa W. F.A. Kirsten --- , Republic of South Africa D.G. Paterson --- , Republic of South Africa M.E. Sobczyk --- , Republic of South AfricaEleven soil samples derived from a black vertisol (Arcadia form) and a red alfisol (Shortlands form) were investigated by means of X-ray fluorescence as well as standard soil chemical and physical analyses. The profiles developed from Jurassic basalt under identical... -
Pedogenic differences between two adjacent basalt-derived soil profiles 2. Mineralogical characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Bühmann --- , Republic of South Africa D.G. Paterson --- , Republic of South Africa W. F.A. Kirsten --- , Republic of South AfricaThe mineralogical composition of a black vertisol (Arcadia form) and a red alfisol (Shortlands form) profile, derived from Jurassic basalt and situated 35 m apart, has been determined by means of X-ray diffraction analysis. The non-clay fractions of the least-weathered... -
Potassium fractions and availability for chickpea (Cicer arietinum) in Vertisols of north-west Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Yohannes Misskire --- Debre Markos University, Ethiopia Tekalign Mamo --- Center for Soil and Fertilizer Research in Africa, Morocco Abi M Taddesse --- Department of Chemistry, Ethiopia Uri Yermiyahu --- Gilat Research Center, Agricultural Research Organization, IsraelFor a critical appraisal of the supplying power of potassium (K) and to predict bioavailable K, it is necessary to have knowledge on the fractions of K and evaluate soil test methods for plant nutrition. This research aimed to assess...