ESTIMATING SORGHUM LEAF AREA BY MEASURING ONE LEAF LENGTH | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 45, Issue 1, January 2014, Pages 1-5 | ||
| Authors | ||
| M. M. Elsahookie; S. H. Cheyed | ||
| Abstract | ||
| To estimate sorghum plant leaf area in a fast and accurate method, seeds of Sorghum bicolor (L.) Moench (cv. Incath) were planted at the field of the Dept. of Field Crop/College of Agric./University of Baghdad. That was in spring 2013 with a field experiment consisted of 20 replicates, each of 3×2.5 m. Each plot (replicate) included 6 rows of 50×15 cm plant spacings. When plants reached anthesis, 5 plants were taken as working sample from each replicate. This will sum 100 plants sample but later, 6 plants were excluded due to damage. Leaves of the 94 plants were measured for length and maximum width, then leaf areas were calculated using conventional formula. The plant leaf area was run for correlation coefficient with leaf area of leaves from top plant to bottom (1 to 10). The highest significant r values were the best with leaves 4 to 7. However, leaf 4 gave highest r value (r=0.888**). Mean leaf area of plant was divided by leaf 4 leaf area to find the constant (8.242). This constant was multiplied by each leaf 4 area to estimate plant leaf area. The t-test between observed and calculated plant leaf areas approved that these two measurements were similar (α=1.0). The final equation recommended to estimate leaf area in sorghum is equal to length × width of leaf no. 4 ×6.18 (6.18 LW4) after multiplying the constant 0.75×leaf no. 4 constant. | ||
| Keywords | ||
| leaf four; leaf; plant leaf area constant | ||
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