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OBAIA, A., DREES, A. (2017). DEVELOPMENT OF PLANT LEAF AREA MEASUREMENT APPARATUS. Egyptian Journal of Agricultural Research, 95(2), 851-860. doi: 10.21608/ejar.2017.148899
ABED EL WAHB R. OBAIA; ABD EL FATAH M. DREES. "DEVELOPMENT OF PLANT LEAF AREA MEASUREMENT APPARATUS". Egyptian Journal of Agricultural Research, 95, 2, 2017, 851-860. doi: 10.21608/ejar.2017.148899
OBAIA, A., DREES, A. (2017). 'DEVELOPMENT OF PLANT LEAF AREA MEASUREMENT APPARATUS', Egyptian Journal of Agricultural Research, 95(2), pp. 851-860. doi: 10.21608/ejar.2017.148899
OBAIA, A., DREES, A. DEVELOPMENT OF PLANT LEAF AREA MEASUREMENT APPARATUS. Egyptian Journal of Agricultural Research, 2017; 95(2): 851-860. doi: 10.21608/ejar.2017.148899

DEVELOPMENT OF PLANT LEAF AREA MEASUREMENT APPARATUS

Article 23, Volume 95, Issue 2, June 2017, Page 851-860  XML PDF (1.34 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2017.148899
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Authors
ABED EL WAHB R. OBAIA1; ABD EL FATAH M. DREES2
1Agric. Eng. Res. Institute, ARC, Dokki, Giza, Egypt
2Agric. Eng. Dept., Fac. of Agric., Al-Azhar Univ. Assuit.
Abstract
xperimental study was carried out at the Agricultural Engineering Department, Faculty of Agriculture, Omar El- Mokhtar University, Al-Beida, Libya. The objective of this study to develop apparatus for measuring plant leaf area based on the changes on resistance of air pressure as related to surface area of plant leaf.The results showed that, for predicting the change of leaf area at different air pressure, a series of simple regression analysis was employed. The analysis related the change in leaf area with air pressure. The regression analysis could relate the change in leaf area strongly with the air pressure as indicated by the high regression coefficients of the obtained equations. On the other hand, it can be seen power relationship between the leaf area (Y) (cm2) and air pressure(X) (m.bar), and this relationship submitted to the following equation: Y  9.8624X 0.6945 R2  0.9564 The accounting data of leave areas using the apparatus and a standardplanimeterwere recorded to obtain correction factor. The correction factor was 0.84, 0.85, 0.86, 0.87, 0.90, 0.92, 1.02, 1.05, 1.08 and 1.09 for leaves area; Olive, Lemon adalia, Marble, Bots, Almond, Garonaa, Grape, Roses, Peach and Plum, respectively. The average value of correction factor was found to be 0.96 of plant leaf area.
Keywords
plant leaf area; planimeter; developed apparatus; prediction equation
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