EFFECT OF GROUND WATERTABLE ONIRRIGATION SCHEDULING MODEL
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Abstract
An irrigation scheduling model was developed based on daily soil water balance which takes into account the effect of water table on irrigation water requirement for wheat crop at Mosul area for eleven years. Capillary rise of water table was estimated with Darcy's equation .Crop evapotranspiration was estimated by pan evaporation method. The model inputs are daily climatological data for eleven years at Mosul Station, soil data (total available water, field capacity, permanent wilting point, allowable percent depletion, saturated hydraulic conductivity),and crop data(root depth for wheat crop, crop coefficient).The model estimates daily and seasonal actual evapotranspiration, effective rainfall, irrigation requirement and upward capillary rise from water table. Using the model for wheat, the seasonal irrigation requirements were reduced by 40% for silt loam soil and 90% for loam soil ,avoiding crop water stress or excessive irrigation.
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References
-Jensen, M.E.. Scheduling Irrigations Using Computers. Soil and Water Conservation. J. 24 (8):193-195.(1969).
- Jensen, M.E. , Wright, J. L. ,and Pratt, B. J. Estimating Soil Moisture Depletion from Climate, Crop and Soil Data.
Transactions of the ASAE.14: 954-959. (1971).
-Tschechcke , P. , et al . Irrigate-a scheduling model . Irr. Eng. 59(1): 45-46. (1978).
-Lamm, F. R., D. H., Rogers, and Manges, H .L. Irrigation scheduling with planned soil water depletion Transactions of the ASAE. 37 (5):1491-1497. (1994). DOI: https://doi.org/10.13031/2013.28232
- Sheet, E. H. Modeling Supplemental irrigation Water Requirement for Wheat Crop at Mosul Area. M.sc Thesis.
Mosul University .Irrigation And Drainage Department.(1987).
- Awchi, A .M. Dual Scheduling of Linear Move Irrigation System in Al- Jazera.M.sc Thesis. Mosul University .Irrigation and Drainage Department.(1990).
-النعيمي,أحمد أزهر. نمذجة احتياجات الارواءلمحصول الذرة الصفراء. العروة الربيعية والخريفية في المنطقة الشماليةجامعة الموصل.هندسة الري والبزل.(2002)
-Stuff, R.G. and R.F. Dale. A Soil Moisture Budget Model Accounting for Shallow Water Table Influences. Soil Sci. Soc. Am. J.42:637-643. (1978). DOI: https://doi.org/10.2136/sssaj1978.03615995004200040021x
- Memon, N.A. et al (1986).A method For Estimating the Steady Upward Flux from A water Table. Transactions of the ASAE. 29(6):1646-1649.(1986). DOI: https://doi.org/10.13031/2013.30366
- Nour El-din, M.M., et al .Salinity Management Model: I. Development Irrigation Drainage engineering. 113(4):440-453.(1987). DOI: https://doi.org/10.1061/(ASCE)0733-9437(1987)113:4(440)
-Abdulmumin, Salisu. Irrigation Scheduling Model with Groundwater and Limited Rooting. Transactions of the ASAE.115(6):938-953. (1989). DOI: https://doi.org/10.1061/(ASCE)0733-9437(1989)115:6(938)
- FAO, Crop Water Requirement. Irrigation and Drainage Paper, No.24, Rome, Italy.( 1975).
-Hanks, R.J. Model for Predicting Plant Yield as Influenced by Water Use. Agronomy Journal.66: 660-665. (1974). DOI: https://doi.org/10.2134/agronj1974.00021962006600050017x
- Borg, H. and Grimes, D.W. Depth Development of Roots with Time: An Empirical Description. Transactions of the ASAE . 29(1):194 –197.(1986) . DOI: https://doi.org/10.13031/2013.30125
- Hanks, R.J. and Ashcroft ,G.L. Physical Properties of Soils.Logan,Utah.127pp.(1976).
- Rawls, W.J , D.L. Brakensiek. and Saxton, K.E. Estimation of Soil Water Properties. Transactions of the ASAE .
(5):1316 –1320,&1328.(1982) .
- Torrie, J.H. and Steel, R.G.D. Principles and Procedures of Statistics. McGraw Hill Book Company. 481pp.(1985).