Fig. 4From: Di-ammonium phosphate (DAP) and plant density improve grain yield, nodulation capacity, and profitability of peas (Pisum sativum L.) on ferralsols in eastern D.R. CongoRegression analysis among growth, nodulation and yield-related parameters using doses (a) and varieties as factors (b). Tg germination rate (%), Dc collar diameter, Sfol leaf area, Nodnact total number of active nodules, Ngpp number of grains per plant, Rdt grain yield; values in bold are significant at 5% p value thresholdBack to article page