Table 1. Characteristics of Italian ryegrass yield, climatic and jitter transformed soil physical variables in paddy field

Variables (unit)	Mean	SE	Median	Skewness	Kurtosis
Fresh matter yield (kg/ha)	43,595.72	1,425.71	46,085.00	−0.13	−0.77
Dry matter yield (kg/ha)	8,855.17	275.06	9,665.00	−0.34	−0.60
Autumnal growing days (day)	74.49	1.26	74.50	−0.37	−0.32
Autumnal accumulated temperature (°C)	721.64	18.12	725.50	−0.04	−0.33
Spring growing days (day)	106.39	1.95	99.00	0.47	−1.06
Spring accumulated temperature (°C)	976.32	36.04	786.20	0.64	−1.13
Spring amount of precipitation (mm)	234.30	7.72	240.28	−0.87	−0.18
Spring days of precipitation (day)	37.49	0.65	38.00	−0.33	0.49
Jitter transformed drainage classes	2.25	0.05	2.16	−0.55	0.66
Jitter transformed slope	2.53	0.05	2.49	1.25	0.03
Jitter transformed effective soil depth	3.21	0.04	3.11	−0.26	0.68
Jitter transformed gravel content	1.03	0.03	1.00	1.88	0.96

SE, standard error.