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

Table 3

Analysis of variance for the effect of water treatment, variety, and sampling date on specific leaf weight (SLW) and on leaf chlorophyll and N concentration (Ch_a and N_a: area based; Ch_dw and N_dw: dry weight based). Included are mean treatment values across varieties and sampling dates for the two water treatments (±W).

	SLW; gm^−2	Cha; gm^−2	Na; gm^−2	Chdw; mgg^−1	Ndw; mgg^−1
Source of; variation^(a)
Treatment; (T)	ns	∗∗∗	∗	∗∗∗	∗
Variety; (V)	∗∗∗	∗∗∗	∗∗∗	∗∗∗	∗∗∗
Sampling; (S)	∗∗∗	∗∗∗	∗∗∗	∗∗∗	∗∗∗
T×V	ns	ns	ns	ns	ns
T×S	ns	∗	∗∗∗	∗	∗∗∗
V×S	ns	∗∗	∗∗∗	∗	∗∗∗
T×V×S	ns	ns	∗∗	ns	∗
Treatment; mean(b)
+W	42.2 a	0.35 a	1.20 b	8.48 a	28.8 b
–W	42.9 a	0.33 b	1.24 a	7.89 b	29.5 a

(a) Significance levels indicated for the ANOVA are ns: 𝑃>.05; ∗: .05≤𝑃≤.01; ∗∗: .01≤𝑃≤.001; ∗∗∗: 𝑃<.001.
(b) Values in a column followed by the same letter are not significantly different at 𝑃>.05 according to the Tukey test.