Effect of Abiotic Stresses on the Nondestructive Estimation of Rice Leaf Nitrogen Concentration

Table 2

Some characteristics of the soils used for the four different abiotic stresses tested.

		Soil used for
Soil; property	Unit	Drought and; salinity	Sulfur; deficiency	Phosphorus; deficiency
pH (1:1)	(-)	5.8	7.1	5.1
Corg	(g kg^−1)	20	16	11
Total N	(g kg^−1)	2.0	1.5	1.1
Olsen P	(mg kg^−1)	41	25	2.4
CEC	(cmol kg^−1)	24.5	34.5	19.6
SO4^−2 S	(mg kg^−1)	nd	0.6	nd
Sand	(g kg^−1)	280	110	30
Silt	(g kg^−1)	360	430	370
Clay	(g kg^−1)	360	460	600