. 2015 May 20;10(5):e0128503. doi: 10.1371/journal.pone.0128503

Table 2. Atom% ¹⁵N excess, recovery and distribution of ¹⁵N in each part of plant and soil in sole cropped and intercropped systems.

		Mungbean				Oat
		Grain	Stem	Leaves	Roots	APG ¹	Roots	Rhizodeposition	Total
Atom% ¹⁵N excess	S_p	0.11±0.05^a	0.20±0.08^a	0.10±0.04^a	0.09±0.05^a	-	-	-	-
	I_p	0.13±0.09^a	0.24±0.12^a	0.08±0.02^a	0.10±0.08^a	0.001±0.000^b	0.02±0.00^a	-	-
	S_m	0.07±0.03^a	0.16±0.07^a	0.07±0.04^a	0.08±0.06^a	-	-	-	-
	I_m	0.09±0.06^a	0.18±0.12^a	0.11±0.01^a	0.05±0.03^a	0.002±0.000^a	0.02±0.00^a	-	-
Recovery of ¹⁵N (in % of applied)	S_p	7.98±4.42^b	20.48±5.90^a	26.08±8.59^a	3.26±1.19^a	-	-	4.16±1.35^a	61.96±14.42^a
	I_p	18.73±17.23^ab	24.29±7.76^a	17.56±2.26^ab	4.20±3.40^a	0.02±0.01^a	0.09±0.00^b	3.51±1.33^a	68.41±25.58^a
	S_m	35.86±10.86^ab	10.04±4.34^a	7.57±3.76^b	4.07±2.27^a	-	-	5.72±2.73^a	63.26±13.24^a
	I_m	50.74±19.42^a	12.33±6.65^a	11.45±5.96^b	1.40±0.32^a	0.18±0.05^a	0.28±0.23^a	5.44±0.47^a	81.87±23.02^a
Distribution of recovered ¹⁵N (%)	S_p	12.92±6.62^b	33.03±4.44^b	41.42±8.19^a	5.34±1.51^a	-	-	7.27±3.50^a	100
	I_p	23.74±13.50^b	36.14±4.47^b	27.31±6.96^ab	6.69±6.07^a	0.04±0.02^b	0.14±0.04^a	5.94±3.22^a	100
	S_m	56.06±6.38^a	16.33±8.48^a	11.57±3.56^c	6.22±2.67^a	-	-	9.82±5.70^a	100
	I_m	61.75±13.68^a	15.35±8.91^a	13.53±5.66^bc	1.78±0.37^a	0.22±0.02^a	0.31±0.21^a	7.06±2.34^a	100

¹ Above-ground part

Mungbean were labeled five weeks after planting and harvested at the beginning of pod setting and at maturity. Mungbean were divided into grain, stem, leaves and root, while oats were divided into above-ground part and root, and rhizodeposition.

The abbreviations in the table represent different treatments. S_p: sole mungbean harvested at pod setting, S_m: sole mungbean harvested at maturity, I_p: intercropping system harvested at mungbean pod setting, and I_m: intercropping system harvested at mungbean maturity. Values are means±standard error (n = 4). Values with different letters within a column indicate significant differences between the treatment S_p, I_p, S_m and I_m (Tukey HSD, p<0.05).

Table 2. Atom% 15N excess, recovery and distribution of 15N in each part of plant and soil in sole cropped and intercropped systems.

Table 2. Atom% ¹⁵N excess, recovery and distribution of ¹⁵N in each part of plant and soil in sole cropped and intercropped systems.