Your search found 17 records
1 Mailhol, J-C.. 1992. Un modSle pour ameliorer la conduite de I'irrigation . la raie. ICID Bulletin, 41(1):43-60.
(Location: IWMI-HQ Call no: PER Record No: H011230)
2 Mailhol, J. C.; Gonzalez, J. M. 1993. Furrow irrigation model for real-time applications on cracking soils. Journal of Irrigation and Drainage Engineering, 119(5):768-783.
Furrow irrigation ; Soil properties ; Infiltration ; Models ; Calibrations ; Field tests ; Statistical analysis ; Water use efficiency / France
(Location: IWMI-HQ Call no: PER Record No: H013359)
Clay soils frequently develop large cracks after irrigation. Infiltration equations therefore need to be modified to take cracking soil properties into account when modeling and optimizing furrow irrigation. In this article, we propose an infiltration equation for cracked soils, based on two parameters. Other parameters of the global model are assumed to be known (furrow length, shape, slope, and estimated roughness). One parameter is linked to the type of soil and is calibrated separately for the entire irrigation process. The second parameter takes soils' cracks into account and is calibrated in real time during the advance phase (before the water front overruns the middle of the plot). This global furrow irrigation model for cracked soils is derived from a conceptual approach and can be used either to predict in real time, water-use efficiency during irrigation (infiltrated volume, runoff water losses, uniformity) or to optimize irrigation parameters (head flow, irrigation duration). The model was tested and validated on three irrigation applications on 60 furrows in a corn field in Tarascon in southeastern France. This conceptual model can be easily adapted to the statistical approach, which is based on the variability of water advance between the furrows.
3 Mailhol, J. C.. 1994. M,thode pour appr,cier les chances de rentabiliser son mat,riel d'irrigation. ICID Bulletin, 43(1):37-52.
(Location: IWMI-HQ Call no: PER Record No: H015640)
This paper proposes a simplified method for assessing whether a farmer can run his irrigation equipment profitably to produce a given crop in a given soil. Assessment is based on marginal costs, so structural changes of the farming system due to irrigation are not considered. The impact of irrigation on yield being the sole object of this investigation, the approach is better suited to study of plots. First one defines the random variable D as the damage suffered by a crop due to lack of irrigation. Statistical data are examined over n years, then the updated cost of damage over k years is computed (k can be related to the length of depreciation of the equipment). On the basis of different assumptions, we can thus assess the profitability of "converting to irrigation." Examples specific to different regions of France, are given, and demonstrate, ceteris paribus, that different regions require different sizes of irrigated surface if equipment is to be operated profitably.
4 Mailhol, J. C.; Revol, P.; Ruelle, P. 1996. PILOTE: Un modele operationnel pour deceler l'apparition du stress hydrique. [PILOTE: An operative model to identify water stress occurrences: Application to a sorghum crop]. In Ragab, R.; El-Quosy, D. E. D.; van den Broek, B.; Pereira, L. S. (Eds.), Crop-water-environment models: Selected papers to the workshop organized by the ICID Working Group on "Sustainable Crops and Water Use" at the occasion of the 16th Congress of the International Commission on Irrigation and Drainage at Cairo, Egypt. Cairo, Egypt: ICID. Egypt National Committee. pp.209-222.
Irrigation scheduling ; Sorghum ; Water balance ; Models ; Water stress ; Indicators ; Soil water / France
(Location: IWMI-HQ Call no: 631.7.1 G000 RAG Record No: H019375)
5 Mailhol, J. C.; Ruelle, P.; Revol, P.; Delage, L.; Lescot, J. M. 1996. Operative modeling for actual evapotranspiration assessment: Calibration methodology. In Camp, C. R.; Sadler, E. J.; Yoder, R. E. (Eds.), Evapotranspiration and irrigation scheduling: Proceedings of the International Conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas. St. Joseph, MI, USA: ASAE. pp.474-479.
Evapotranspiration ; Assessment ; Models ; Calibrations ; Irrigation scheduling ; Water budget ; Water balance ; Field tests
(Location: IWMI-HQ Call no: 631.7.1 G000 CAM Record No: H020620)
6 Mailhol, J. C.; Baqri, M.; Lachhab, M. 1997. Operative irrigation modelling for real-time applications on closed-end furrows. Irrigation and Drainage Systems, 11(4):347-366.
Irrigation efficiency ; Mathematical models ; Furrow irrigation ; Water balance ; Infiltration ; Simulation ; Field tests
(Location: IWMI-HQ Call no: PER Record No: H021828)
7 Mailhol, J. C.; Olufayo, A. A.; Ruelle, P. 1997. Sorghum and sunflower evapotranspiration and yield from simulated leaf area index. Agricultural Water Management, 35(1/2):167-182.
Sorghum ; Sunflowers ; Evapotranspiration ; Crop yield ; Water balance ; Simulation models ; Water stress
(Location: IWMI-HQ Call no: PER Record No: H021844)
8 Mailhol, J. C.; Ruelle, P.; Revol, P. 1997. Un outil de gestion d'un volume d'eau limité pour optimiser le rendement d'une parcelle irriguée. [Water allocation model for crop yield optimisation on an irrigated plot with a limited amount water]. ICID Journal, 46(2):15-30.
Models ; Water balance ; Evapotranspiration ; Evaluation ; Sorghum ; Water allocation ; Crop yield ; Optimization ; Irrigation practices
(Location: IWMI-HQ Call no: PER Record No: H021989)
9 Mailhol, J. C.; Priol, M.; Benali, M. 1999. A furrow irrigation model to improve irrigation practices in the Gharb Valley of Morocco. Agricultural Water Management, 42(1):65-80.
Furrow irrigation ; Irrigation practices ; Infiltration ; Estimation ; Simulation models ; Stochastic process ; Irrigation efficiency ; Optimization ; Sugarcane / Morocco / Gharb Valley
(Location: IWMI-HQ Call no: PER Record No: H024945)
10 Zairi, A.; Mailhol, J. C.; Nasr, Z.; Slatni, A.; Ruelle, P. 1999. Strategies d'irrigation gravitaire du ble dur et impacts sur les rendements et la consommation en eau: Le cas de la Tunisie. [Surface irrigation strategies of wheat and their impacts on yield and water consumption: The Tunisian case]. In ICID, 17th Congress on Irrigation and Drainage, Granada, Spain, 1999: Water for Agriculture in the Next Millennium - Transactions, Vol.1A, Q.48: Irrigation under conditions of water scarcity; Q.48.1: Management of irrigation systems and strategies to optimize the use of irrigation water; 48.2: Techniques to promote water saving in irrigation. New Delhi, India: ICID. pp.41-50.
Surface irrigation ; Wheat ; Crop yield ; Irrigation efficiency ; Irrigation scheduling ; Simulation models / Tunisia
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H025062)
11 Mailhol, J. C.; Ruelle, P. 1999. Un outil opérationnel pour l'analyse des stretégies d'irrigation du mais au moyen d'un canon enrouleur. [An Operative tool for analysing irrigation strategies of corn using a travelling rain gun system]. In ICID, 17th Congress on Irrigation and Drainage, Granada, Spain, 1999: Water for Agriculture in the Next Millennium - Transactions, Vol.1C, Q.48, Poster Session: Irrigation under conditions of water scarcity: Q.48.1: Management of irrigation systems and strategies to optimize the use of irrigation water. New Delhi, India: ICID. pp.87-99.
Maize ; Irrigated farming ; Decision making ; Models ; Soil water ; Water balance ; Crop yield ; Irrigation scheduling / France
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H025151)
12 Mailhol, J. C.; Ruelle, P.; Nemeth, I. 2001. Impact of fertilisation practices on nitrogen leaching under irrigation. Irrigation Science, 20(3):139-147.
Irrigation practices ; Furrow irrigation ; Sprinkler irrigation ; Fertilizers ; Nitrogen ; Leaching ; Measurement ; Maize ; Flow discharge ; Simulation models ; Calibrations ; Infiltration ; Monitoring ; Water balance ; Plant growth / France / Montpellier
(Location: IWMI-HQ Call no: PER Record No: H028704)
13 Ruelle, P.; Mailhol, J. C.; Quinones, H.; Granier, J. 2003. Using NIWASAVE to simulate impacts of irrigation heterogeneity on yield and nitrate leaching when using a travelling rain gun system in a shallow soil context in Charente (France) Agricultural Water Management, 63(1):15-35.
Simulation models ; Maize ; Crop production ; Crop yield ; Nitrogen ; Leaching ; Fertilizers ; Irrigation scheduling ; Irrigation equipment / France / Charente
(Location: IWMI-HQ Call no: PER Record No: H033103)
14 Popova, Z.; Mailhol, J. C.; Ruelle, P.; Varlev, I.; Gospodinov, I. 2005. Maintaining environmental and productivity sustainability of a non-homogeneous furrow set in different agro-landscapes. Irrigation and Drainage, 54(3):321-337.
(Location: IWMI-HQ Call no: PER Record No: H037456)
15 Mailhol, J. C.; Ruelle, P.; Popova, Z. 2005. Simulation of furrow irrigation practices (SOFIP): A field-scale modelling of water management and crop yield for furrow irrigation. Irrigation Science, 24(1):37-48.
Furrow irrigation ; Simulation models ; Irrigation management ; Irrigation practices ; Infiltration ; Soil moisture ; Soil water ; Water balance
(Location: IWMI-HQ Call no: PER Record No: H037825)
16 Mailhol, J. C.; Zaïri, A.; Slatni, A.; Nouma, B. B.; El Amani, H. 2004. Analysis of irrigation systems and irrigation strategies for durum wheat in Tunisia. Agricultural Water Management, 70(1):19-37.
Irrigation systems ; Irrigation scheduling ; Water scarcity ; Wheat ; Models ; Calibration ; Sprinkler irrigation ; Economic analysis / Tunisia
(Location: IWMI-HQ Call no: PER Record No: H035771)
17 Zairi, A.; Slatini, A.; Mailhol, J. C.; Achour, H. 1998. Surface irrigation efficiency in cracking soils as influenced by water restrictions. In Pereira, L. S.; Gowing, J. W. (Eds.). Water and the environment: Innovation issues in irrigation and drainage: Selected papers of the 1st Inter-Regional Conference “Environment-Water: Innovative Issues in Irrigation and Drainage,” Lisbon, Portugal, Sept. 1998. London, UK: E & FN Spon. pp.120-130.
Surface irrigation ; Irrigation efficiency ; Performance evaluation / Tunisia / Lower Medjerda Valley
(Location: IWMI-HQ Call no: 631.7.1 G000 PER Record No: H039025)
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