https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Cattle manure, scalping and soil wetness effects on some physical properties of a hardsetting soil and associated early maize growth https://commons.ru.ac.za/vital/access/manager/Repository/vital:11861 Thu 13 May 2021 05:17:33 SAST ]]> Aggregate stability, crust formation, steady state infiltration and mode of seedling emergence in soils with various texture and mineralogy https://commons.ru.ac.za/vital/access/manager/Repository/vital:11871 2 mm aggregates. The reverse occurred in Alice Jozini, which had relatively low clay content of 120 g kg-1. Two significantly different groups of the SSIR were observed. The SSIR was between 1.24 and 3.60 mm hr-1 in the group of ecotopes dominated by primary minerals and relatively lower clay content. In the second group, consisting one ecotope dominated by kaolinite and relatively higher clay content, the SSIR was 15.23 mm hr-1. Rainfall pattern i.e. rainfall applied either as an eight minute single rainstorm (SR) or four-two minute intermittent rainstorms (IR) separated by a 48 h drying period significantly (p < 0.05) affected crust strength, SSIR and erosion. The IR resulted in higher crust strength and SSIR than SR. The effect of rainfall pattern on SSIR was mostly influenced by the primary minerals namely, quartz. Three maize seeds of equal size were planted in plastic pots, pre-wetted by capillary action and then subjected to simulated rainfall at three intensities for 5 min. Rainfall intensity (30, 45 and 60 mm h-1) significantly (P < 0.05) affected crust strength and mean emergence day (MED) but not emergence percentage (EMP) and shoot length (P > 0.05). The 60 mm h-1 rainfall intensity resulted in the highest crust strength and MED.]]> Thu 13 May 2021 01:21:01 SAST ]]>