Fig. 4From: Effects of ground bamboo application on weed suppression and rice production: a 3-year paddy field experimentRice plant height, tiller number and leaf color according to soil plant analysis development (SPAD) values in paddy field experiments conducted in 2017–2019. SPAD values indicate leaf chlorophyll contents. Different superscript letters indicate significant differences (α = 0.05) according to Bonferroni post-hoc tests. Data are means ± SE. Treatments are described in Fig. 1. *P < 0.05, NA = data not availableBack to article page