Table 5. Correlations of oil yield components and soil nutrients.

Nutrients of soil	Year	Correlation (significance: p-value)
		Oil rate of fresh fruit	Oil rate of kernel	Oil yield
Available nitrogen	2015	0.241 (0.387)	0.549* (0.034)	0.407 (0.132)
	2016	0.514* (0.050)	0.720** (0.002)	0.418 (0.121)
Available phosphorus	2015	0.472 (0.076)	0.628* (0.012)	0.636* (0.011)
	2016	0.623* (0.013)	0.681** (0.005)	0.719** (0.003)
Available potassium	2015	0.454 (0.089)	0.648** (0.009)	0.252 (0.364)
	2016	0.591* (0.020)	0.647** (0.009)	0.392 (0.148)
Organic matter	2015	0.681** (0.005)	0.619* (0.014)	0.644* (0.010)
	2016	0.372 (0.172)	0.565* (0.028)	0.385 (0.157)

Note

*indicates p<0.05, ≥0.01

**indicates p<0.01.