Leaf Senescence, Root Morphology, and Seed Yield of Winter Oilseed Rape (Brassica napus L.) at Varying Plant Densities

Table 1

Soil properties measured at the beginning of each growing season from 2010 to 2014.

Parameter	Unit	2010-2011	2011-2012	2012-2013	2013-2014
pH		6.65	6.82	6.70	6.91
Dissolved organic carbon	mg kg^−1	85.3	95.1	104.1	100.6
Total N	g kg^−1	1.51	1.69	1.79	1.56
Alkaline digested N	mg kg^−1	74.2	78.2	79.3	77.8
Available phosphorus	mg kg^−1	46.2	45.7	50.5	49.7
Available potassium	mg kg^−1	63.1	60.3	68.4	65.4
Available boron	mg kg^−1	0.45	0.51	0.66	0.63