Effect of the Irrigation Interval and Nitrogen Rate on Yield and Yield Components of Onion (Allium cepa L.) at Arba Minch, Southern Ethiopia

Table 7

Simple coefficients of correlation between plant growth, yield, and yield components of onion.

Variable	PH	NL	DM	LL	BL	BD	ABW	TBM	MBY	UMBY	TBY	HI
PH	1
NL	0.929	1
DM	0.946	0.962	1
LL	0.912	0.797	0.826	1
BL	0.864	0.736	0.826	0.856	1
BD	0.945	0.904	0.931	0.894	0.864	1
ABW	0.932	0.967	0.968	0.792	0.776	0.910	1
TBM	0.926	0.886	0.920	0.867	0.869	0.963	0.886	1
MBY	0.929	0.911	0.932	0.868	0.872	0.952	0.919	0.979	1
UMBY	−0.415	−0.376	−0.351	−0.530	−0.458	−0.491	−0.376	−0.507	−0.535	1
TBY	0.933	0.919	0.944	0.858	0.869	0.950	0.928	0.977	0.996	−0.459	1
HI	0.752	0.750	0.741	0.686	0.703	0.742	0.778	0.734	0.822	−0.289	0.835	1

Correlation is significant at the 0.01 level (2-tailed). Correlation is significant at the 0.05 level (2-tailed). PH = plant height; NL = leaf number; DM = days of maturity; LL = leaf length; BL = bulb length; BD = bulb diameter; ABW = average bulb weight; TBM = total dry biomass; MBY = marketable bulb yield; UMBY = unmarketable bulb yield; TBY = total bulb yield; HI = harvest index.