AI SearchA water management model for lowland paddy irrigation systems (Record no. 127752)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04901cas a2200397 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260819090428.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 110902s1980 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10049046 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.AE-80-01 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Gilles, Bienvenido Cruz |
| 245 12 - TITLE STATEMENT | |
| Title | A water management model for lowland paddy irrigation systems |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1980 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 87 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. AE-80-01 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1980 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | An irrigation system, after it has been designed and built must be managed. Management, often called operations and maintenance (0 & M), must be organized around the physical components of a system, which are specified by design. To emphasize the operational aspect of management, a water management model was developed for lowland paddy irrigation systems. It can be utilized either as a prediction-correction model or a simulation model depending on which function is specified. As a prediction-correction model, it makes daily inventory of areas under different farming activities on a weekly basis and provides field operational guidelines for executing water deliveries for each of these areas. The model can also be utilized to simulate the operation and response of an irrigation system to different system-wide and on-farm management schemes and its combinations. The system-wide management strategies that the model can handle are: simultaneous irrigation, rotational irrigation by lateral canal and rotational irrigation by tertiary turnout. On-farm management is related to the paddy spillway height management. Two component models were. developed and incorporated in both prediction -correction and simulation procedures of the model. The area inventory component model was designed to account for areas under different farming activities. This information was utilized by the distribution network component model in accounting for water entering or leaving an irrigation system. A correction procedure was applied on both component models to control the operation of the models. This was done through weekly feedback. The water balance equation governs the computation of the demand for both predicted and correction deliveries. For simultaneous irrigation, water delivery scheduling is based on a predetermined critical depth, i.e. minimum depth of water in the paddy before irrigation is required. For both rotational irrigation by later' al canal and rotational irrigation by tertiary turnout, the irrigation schedule is fixed by the number of days in the rotation period. In all cases, a rainfall-use efficiency criteria was applied such that irrigation is treated as a supplement to rainfall. Test runs of the model were made for both prediction-correction and simulation procedures utilizing the data from the Lower Talavera River Irrigation System (LTRIS) located at Central Luzon, Philippines. The results of the simulation show that: (a) effective rainfall is determined by the daily intensity and distribution of rainfall, number of days between irrigation application and the ability of the paddy to trap rainfall; (b) improvement in effectiveness of rainfall due to increase in paddy spillway height does not necessarily mean more water savings since the water requirement of the paddy is also increased. The computer program is written in FORTRAN IV H-Extended. The program listing may be obtained from the Division of Agricultural and ·Food Engineering, Asian Institute of Technology, Bangkok, Thailand or from the Irrigation and Water Management Department, The International Rice Research Institute, College, Laguna, Philippines. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Irrigation farming |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Apichart Anukularmphai, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Eggers, Helmut, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Olesen, Svend Elsnab, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Early, Alan C., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Switzerland, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. AE-80-01 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B21894">http://203.159.5.9/ait-thesis/detail.php?q=B21894</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10049046 |
| b | mnait |
| c | x |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 250227 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | x |
| -- | 2 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120584445 |
| CREATED | CREATED : 2013-08-07 |
| RECORD Id | RECORD # : i12735723 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 1 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160053467 |
| CREATED | CREATED : 2016-05-18 |
| RECORD Id | RECORD # : i12982246 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 19/08/2026 | 50.00 | AIT Thesis no.AE-80-01 | 30050120584445 | 19/08/2026 | 3 | 19/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 19/08/2026 | AIT Thesis no.AE-80-01 | 30050160053467 | 19/08/2026 | 19/08/2026 | 40-Archives |