Fig. 3: Yield, costs and profit in different fertilization and weeding treatments in an industrial oil palm plantation in Jambi, Indonesia.
From: Mechanical weeding enhances ecosystem multifunctionality and profit in industrial oil palm
Oil palm yield (a), yield per palm with the lowest performance (b), share of palms per plot which fell below 75% of the average yield (c), costs (d), profit (e) and relative gross margin (f) (cumulative values for 2017–2020) in different fertilization and weeding treatments (N = 4 plots) in an industrial oil palm plantation in Jambi, Indonesia. Box plots indicate the 25th percentile, median and 75th percentile, and whiskers are 1.5 × the interquartile range. 22 factorial treatments: + Fert, + Herb are conventional fertilization with herbicide treatment; − Fert, + Herb are reduced fertilization with herbicide treatment; + Fert, − Herb are conventional fertilization with mechanical weeding; − Fert, − Herb are reduced fertilization with mechanical weeding.
