Determination of the Suitable Location of Soil Moisture Sampling in Drip-Tape Irrigation Management in A Maize Field

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AMIRI Z.; GHEYSARI M.; Mosaddeghi M. R.; Tabatabaei M. S.; Moradiannezhad M.

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Journal: Journal of Water and Soil Science Year:2019 | Volume:23 | Issue:2 Page(s): 45-54

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Title

Determination of the Suitable Location of Soil Moisture Sampling in Drip-Tape Irrigation Management in A Maize Field

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Keywords

Drip-tape irrigationQ1

Soil moisture distributionQ1

Root system developmentQ1

MaizeQ2

Averaged soil moisture of the soil profileQ1

Abstract

Location of soil moisture sampling in irrigation management is of special importance due to the spatial variability of soil hydraulic characteristics and the development of root system. The objective of this study was determination of the suitable location for soil moisture sampling in Drip-tape irrigation management, which is representative of the average moisture in the soil profile (θ avg) as well. For this purpose, Soil moisture distribution (θ ij) at the tassel stage of Maize and one irrigation interval (68-73 day after plant) were measured at the end of season. The results showed more than 70% length of the root of plant was located in 30 cm of the soil depth. By accepting ± 10% error in relation to the averaged soil moisture, some region of soil profile was determined which was in the acceptable error range and also near the averaged soil moisture (0. 9θ avg<θ Rec<1. 1θ avg). By overlapping θ Rec in one irrigation interval, the appropriate location for soil moisture sampling was the horizontal distance from drip-tape line to 20 cm and the depth of 10-20 cm from the soil surface. To determine the appropriate place for soil moisture sampling, the development of root system and the maximum concentrated root length density in the soil profile extracting the maximal soil moisture should be taken in to account, parallel with the averaged soil moisture.

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APA: Copy

AMIRI, Z., GHEYSARI, M., Mosaddeghi, M. R., Tabatabaei, M. S., & Moradiannezhad, M.. (2019). Determination of the Suitable Location of Soil Moisture Sampling in Drip-Tape Irrigation Management in A Maize Field. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 23(2 ), 45-54. SID. https://sid.ir/paper/362427/en

Vancouver: Copy

AMIRI Z., GHEYSARI M., Mosaddeghi M. R., Tabatabaei M. S., Moradiannezhad M.. Determination of the Suitable Location of Soil Moisture Sampling in Drip-Tape Irrigation Management in A Maize Field. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2019;23(2 ):45-54. Available from: https://sid.ir/paper/362427/en

IEEE: Copy

Z. AMIRI, M. GHEYSARI, M. R. Mosaddeghi, M. S. Tabatabaei, and M. Moradiannezhad, “Determination of the Suitable Location of Soil Moisture Sampling in Drip-Tape Irrigation Management in A Maize Field,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 23, no. 2 , pp. 45–54, 2019, [Online]. Available: https://sid.ir/paper/362427/en

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