Study of the Effects of Different Surface and Subsurface Drainage Systems on Canola Leaf Area and Developing Mathematical Governing Equations

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ASGARI A.; DARZI NAFTCHALI A.; NADI M.; SABERALI S.F.

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Paper Information

Journal: Iranian Journal of Irrigation and Drainage Year:2020 | Volume:13 | Issue:6 Page(s): 1733-1742

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Title

Study of the Effects of Different Surface and Subsurface Drainage Systems on Canola Leaf Area and Developing Mathematical Governing Equations

Author(s)

ASGARI A. | DARZI NAFTCHALI A. | NADI M. | SABERALI S.F. | Issue Writer Certificate

Keywords

drain depth and spacingQ1

growth indicesQ2

regression modelsQ2

water tableQ2

Abstract

Study of the performance of different drainage systems is essential for canola cultivation in the paddy fields of Mazandaran Province. For this purpose, an experiment was conducted at the drainage pilot of the Sari Agricultural Sciences and Natural Resources University in 2017-2018 cropping season. At 8 stages of canola growth, sampling were done under randomized complete block design with three replications in subsurface drainage systems and surface one (Control) in order to determinate leaf area (LA), leaf area index (LAI), numbers of leaves (SLN) and leaf dry weight (LDW). Then, statistical analysis was carried out to study the effect of drain depth and spacing on the mentioned growth indices and the mathematical relationships between leaf area and its dry weight were found through evaluating linear and nonlinear regression models under different drainage systems. Maximum LA in all treatments occurred about 90 day after planting. Mathematical relations between LA and LDW described by linear and power models were suitable (with a correlation coefficient of 0. 98). Among the mathematical functions, reverse polynomial functions with degrees 4 and 5, logarithmic equations and inverse logarithmic equations with degrees 3, 4, and 5 showed better results than other mathematical functions The relations obtained in this experiment can be used in simulation models for winter canola growth under water table control conditions.

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APA: Copy

ASGARI, A., DARZI NAFTCHALI, A., NADI, M., & SABERALI, S.F.. (2020). Study of the Effects of Different Surface and Subsurface Drainage Systems on Canola Leaf Area and Developing Mathematical Governing Equations. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 13(6 ), 1733-1742. SID. https://sid.ir/paper/131790/en

Vancouver: Copy

ASGARI A., DARZI NAFTCHALI A., NADI M., SABERALI S.F.. Study of the Effects of Different Surface and Subsurface Drainage Systems on Canola Leaf Area and Developing Mathematical Governing Equations. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2020;13(6 ):1733-1742. Available from: https://sid.ir/paper/131790/en

IEEE: Copy

A. ASGARI, A. DARZI NAFTCHALI, M. NADI, and S.F. SABERALI, “Study of the Effects of Different Surface and Subsurface Drainage Systems on Canola Leaf Area and Developing Mathematical Governing Equations,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 13, no. 6 , pp. 1733–1742, 2020, [Online]. Available: https://sid.ir/paper/131790/en

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