Biodegradable mulching spray for weed control in the cultivation of containerized ornamental shrubs

Chemical and Biological Technologies in Agriculture

Table 2 Significance of the effects (P < 0.05) of the substrate seed inoculation (SSI), the type of weed control (TWC), the time (T) and the SSI × TWC, SSI × T, TWC × T, and SSI × TWC × T interactions on the measured parameters evaluated by three-way ANOVAs

Source of variation	Significance
	% of substrate surface covered by weeds	Weed plant dry weight per container			Number of alive plants per container		Shoot length of Viburnum lucidum
	% of substrate surface covered by weeds	All weeds	Sonchus asper	Epilobium montanum	Sonchus asper	Epilobium montanum	Shoot length of Viburnum lucidum
Substrate seed inoculation (SSI)	< 0.001	0.045	< 0.001	< 0.001	< 0.001	< 0.001	0.012
Type of weed control (TWC)	< 0.001	0.001	0.012	0.020	0.007	< 0.001	0.157
Time (T)	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
SSI × TWC	< 0.001	0.036	0.013	< 0.001	0.002	< 0.001	0.053
SSI × T	< 0.001	0.182	< 0.001	< 0.001	< 0.001	0.001	0.670
TWC × T	< 0.001	0.582	0.620	0.563	0.130	0.006	0.681
SSI × TWC × T	< 0.001	0.729	0.630	0.489	0.168	0.006	0.025