Indirect Estimations of Lentil Leaf and Plant N by SPAD Chlorophyll Meter

Figure 2

Association of estimated leaf N concentration (LNC) by linear regression (left) and nonlinear redial basis function (RBF) neural networks models (right) against actual LNC values. Data from two trials, two years, and three growth stages. Variables in the right side represent the combination of independent variables that generated each model.