Estimation of rice evapotranspiration using a microlysimeter 
technique and comparison with FAO Penman-Monteith and Pan 
evaporation methods under Moroccan conditions

Lage, M.; Bamouh, Ahmed; Karrou, Mohammed; Mourid, Mohamed El

doi:10.1051/agro:2003040

Cited by 42 publications

(28 citation statements)

References 20 publications

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“…Measurements during flooded conditions were approximately 3.80 mm d of H 2 O lost to the atmosphere. These findings suggest that, in some cases, water status and climate have the potential to impact water use more than growth stage, similar to findings reported by others (Lage et al, 2003;Li and Cui, 1996).…”

Section: Measured Fluxessupporting

confidence: 90%

Seasonal Variation in Measured H2O and CO2 Flux of Irrigated Rice in the Mid-South

Reba¹,

Counce²

2016

Trans.ASABE

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Section: Measured Fluxessupporting

confidence: 90%

Seasonal Variation in Measured H2O and CO2 Flux of Irrigated Rice in the Mid-South

Reba¹,

Counce²

2016

Trans.ASABE

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“…Rowshon et al [22] estimated crop evapotranspiration using Marriott tube lysimeter and observed ET value of 0.4-0.9 cm day −1 . Lage et al [37] conducted lysimeter experiment and reported daily average rice evapotranspiration rate of 0.67 cm day −1 . According to [38], typical evapotranspiration values of rice fields are 0.4 to 0.5 cm day −1 for wet season and 0.6 to 0.7 cm day −1 but can be as high as 1 to 1.1 cm day −1 in subtropical regions.…”

Section: Discussionmentioning

confidence: 99%

An Assessment of the Vertical Movement of Water in a Flooded Paddy Rice Field Experiment Using Hydrus-1D

Mo'allim

Kamal

Muhammed

et al. 2018

Water

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A quantitative estimation of the major components of the field water balance provides management decisions on how the scheme ought to be operated to ensure better distribution of irrigation water and increased delivery performance. Therefore, in this study, the water balance component in transplanted and broadcasted rice fields with conventional irrigation (flooding irrigation) in the Tanjung Karang Rice Irrigation Scheme (TAKRIS), Sawah Sempadan were observed and then modeled using Hydrus-1D numerical model during two consecutive rice growing seasons. During the off-season, irrigation water accounted for 59.6% of the total water input (irrigation + rainfall), but about 76.2% of total water input during the main season. During the main season, rainfall water only contributed to 23.8% of total water input and 40.4% during the off-season. Drainage water accounted for 37.3% of the total water input during the off-season and 43.7% during the main season, respectively, which was the main path of water losses from conventional rice fields, which indicates that maintaining a high water level and huge rainfall events during both seasons increased drainage water. Simulated ET during the off-season and the main season accounted for 38.1% and 49.5% of the total water input, respectively. Observed and simulated water percolation revealed about 17.1% to 19.2% of total water input during both seasons, respectively. Additionally, the water productivities analyzed from total water input and irrigation water were 0.43 and 0.72 kg m −3 during the off-season and 0.60 and 0.78 kg m −3 during the main season, respectively. The water productivity index evaluated from observed and modeled evapotranspiration was 1.03 and 1.13 kg m −3 during the off-season and 0.98 and 0.94 kg m −3 during the main season, respectively. The overall results revealed that Hydrus-1D simulations were a reasonable and effective tool for simulating vertical water flow in both broadcasted and transplanted rice experimental fields.

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“…In general, weighable lysimeters are useful to measure crop ET, but often they are large and expensive to install and cannot partition E and T. Examples of large weighing lysimeters are given by [15] [17]- [21]. Smaller lysimeters, i.e., mini-and micro-lysimeters, have also been used to measure E, T and ET on smaller scales and examples are given by [22]- [31]. Hereafter, no distinction is made between mini-and micro-lysimeters and they are abbreviated as ML.…”

Section: Introductionmentioning

confidence: 99%

“…The ML's have been coupled with other instrumentation, including dual-probe heat-pulse, stem flow gauges, and time domain reflectometery to measure the amount of soil water loss through E and ET [31]- [35]. These ML's are normally installed and weighed early in the morning and then again weighed in evening hours using a portable scale and thus provide an estimate of day time values of soil E and ET.…”

Section: Introductionmentioning

confidence: 99%

Field Measurement of Cotton Seedling Evapotranspiration

Lascano¹,

Duesterhaus²,

Booker³

et al. 2014

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Information on cotton evapotranspiration (ET) during the seedling growth stage and under field conditions is scarce because ET is a difficult parameter to measure. Our objective was to use weighable lysimeters to measure daily values of cotton seedling ET. We designed and built plastic weighable micro-lysimeters (ML) that were 0.35 m deep with a soil volume of 6300 cm 3 . The soil core was obtained in-situ by pushing the ML well casing into the soil using a commercial soil sampler. The soil core was weighed with tension and compression type load-cells, where a change in mass of 18 g·d −1 was equivalent to a water evaporation of 1 mm·d −1 . We compared load-cell measurements of changes in mass to values measured with a portable field scale by linear regression analysis, and the slope was equal to 1, indicating no statistical difference (P = 0.05) between the two measurements. We measured and compared seedling height, root length and leaf area of cotton plants in the ML with cotton plants in the surrounding area and this comparison showed that the ML used was suitable to measure cotton seedling ET for the first 30 days after seed emergence. The root mean squared error for crop height was 0.09 cm, for leaf area index (LAI) was 0.03 m 2 ·m −2 and 6.5 cm for root length. Also, soil temperature at a 0.1 m depth was statistically (P = 0.05) the same in and outside the ML's. For two planting dates, we measured daily values of soil water evaporation (E) and cotton seedling ET. The day following an irrigation event, E was ~ 9 mm * Corresponding author. # The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual's income is derived from any public assistance program. R. J. Lascano et al. 1238d −1 and quickly declined the following days. Results showed that ML's provide an accurate tool to measure water losses from the soil and cotton plants with a LAI of ≤0.2.

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Estimation of rice evapotranspiration using a microlysimeter technique and comparison with FAO Penman-Monteith and Pan evaporation methods under Moroccan conditions

Cited by 42 publications

References 20 publications

Seasonal Variation in Measured H2O and CO2 Flux of Irrigated Rice in the Mid-South

Seasonal Variation in Measured H2O and CO2 Flux of Irrigated Rice in the Mid-South

An Assessment of the Vertical Movement of Water in a Flooded Paddy Rice Field Experiment Using Hydrus-1D

Field Measurement of Cotton Seedling Evapotranspiration

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