Impact of water stress on radiation interception and radiation use efficiency of Soybeans (Glycine max L. Merr.) in Nigeria

Table 2 Variability in leaf area index, dry above ground biomass and extinction coefficient in both irrigation seasons

Treatment label	2013 season			2013/2014 season
Treatment label	Leaf area index (m² m⁻²)	Above ground biomass (t ha^-1)	Extinction coefficient	Leaf area index (m² m⁻²)	Above ground biomass at 84 DAP (t ha^-1)	Extinction coefficient
1. T₁₁₁₁	7.10^a	3.42^a	0.52^a	3.44^a	2.19^a	0.42^a
2. T₀₁₁₁	4.79^b	3.16^a	0.53^a	2.36^c	1.48^a	0.40^b
3. T₁₀₁₁	4.17^bc	2.67^abc	0.50^b	2.98^abc	1.35^a	0.42^a
4. T₁₁₀₁	3.61^c	1.89^c	0.49^b	3.15^ab	1.86^a	0.42^a
5. T₁₁₁₀	4.53^b	2.35^bc	0.49^b	2.68^bc	1.58^a	0.39^b

Means of the LAIs, dry aboveground biomass and extinction coefficient with the same letter are not significantly different at 5 % (p > 0.05) level based on Duncan multiple comparisons of means. The LAIs reported were taken 86 and 49 DAP in 2013 and 2013/2014 seasons respectively while the dry aboveground biomass were taken 84 DAP in the two seasons. The extinction coefficients reported are means from replicates