“…Plant leaf area indicates crop nutrient availability (Uhart & Andrade, 1995;Heege, Reusch, & Thiessen, 2008) drought stress (Alves & Setter, 2000), physical damage of canopy (Olthof, King, & Lautenschlager, 2003), land degradation/rehabilitation (Doi & Ranamukhaarachchi, 2013), and other factors. As such, the consecutive observation of leaf area is an effective measure that can be employed to find abnormalities in plant growth within a certain period.…”