Table 1.

Four-way randomized block ANOVA evaluating the effect of harvest (H) number, nitrogen, phosphorous, potassium and their interactions on the growth and yield components of ramie.

Source of variation	Plant height cm	Biomass kg	Stem weight	Stem NO.	Stem diameter mm	Raw fiber yield kg	Degummed fiber yield kg
Low NPK
H	***	***	***	***	***	***	***
N	***	Ns	***	***	***	***	***
P	**	***	***	*	*	*	***
K	**	**	***	Ns	*	**	***
N × P × K	**	Ns	Ns	*	***	Ns	**
H × N × P × K	Ns	*	Ns	Ns	Ns	Ns	**
Normal NPK
H	***	***	***	***	***	***	***
N	***	***	***	***	**	***	***
P	**	***	***	*	***	***	***
K	**	***	***	***	***	***	***
N × P × K	***	Ns	Ns	Ns	**	Ns	Ns
H × N × P × K	Ns	Ns	Ns	Ns	Ns	*	Ns
Low NPK + GA 3
H	***	***	***	**	***	***	***
N	***	***	***	***	***	***	***
P	***	***	***	***	***	***	***
K	***	***	***	***	***	***	***
N × P × K	**	Ns	Ns	Ns	**	Ns	Ns
H × N × P × K	Ns	Ns	Ns	Ns	Ns	*	Ns

Ns, non-significant; *, significant at p < 0.05; **, significant at p < 0.01; and ***, significant at p < 0.001.