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Auteur Merriam, J.L. |
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Farmer controlled variable supply irrigation : Mardan-scarp pilot project / Merriam, J.L.
Titre : Farmer controlled variable supply irrigation : Mardan-scarp pilot project Type de document : texte imprimé Auteurs : Merriam, J.L. Mention d'édition : Agricultural Engineering Depatment/California Polytechnic State University Editeur : Agricultural Engineering Depatment/California Polytechnic State University Année de publication : 1991 ISBN/ISSN/EAN : CI-08031 Note générale : This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only... Langues : Anglais (eng) Mots-clés : Irrigation Ressource en eau Ruissellement Agriculture Hydraulique agricole Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only... Note de contenu : This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only... Farmer controlled variable supply irrigation : Mardan-scarp pilot project [texte imprimé] / Merriam, J.L. . - Agricultural Engineering Depatment/California Polytechnic State University . - Agricultural Engineering Depatment/California Polytechnic State University, 1991.
ISSN : CI-08031
This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only...
Langues : Anglais (eng)
Mots-clés : Irrigation Ressource en eau Ruissellement Agriculture Hydraulique agricole Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only... Note de contenu : This pilot project systems is a fully auto mated distribution system consisting of a gate from distributory 78 to a lined level top minor channel leadin to a closed pipeline sytem. Any flow rate to ken out at a farm turnout is fully and automatically equalled by inflow from the distributory. In operation the gate from distributory is left always open so the level-top canal is always full to the same level as the distributory and the gate from the level-top canal to the pipeline is always open keeping the pipeline always full. These gates are for emergency operation only... Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B031.43640 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43639 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43638 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43637 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43636 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43635 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43634 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B031.43633 CI-08031 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible Flexible supply schedule missing link for effective surface irrigation and automation / Merriam, J.L.
Titre : Flexible supply schedule missing link for effective surface irrigation and automation Type de document : texte imprimé Auteurs : Merriam, J.L. Mention d'édition : Agriculturel Engineering Dept., California Polytechnic State University Editeur : Agriculturel Engineering Dept., California Polytechnic State University Année de publication : 1991 ISBN/ISSN/EAN : CI-08026 Note générale : Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple. Langues : Anglais (eng) Mots-clés : Irrigation Perimètre irrigué Hydraulique agricole Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple. Note de contenu : Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple. Flexible supply schedule missing link for effective surface irrigation and automation [texte imprimé] / Merriam, J.L. . - Agriculturel Engineering Dept., California Polytechnic State University . - Agriculturel Engineering Dept., California Polytechnic State University, 1991.
ISSN : CI-08026
Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple.
Langues : Anglais (eng)
Mots-clés : Irrigation Perimètre irrigué Hydraulique agricole Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple. Note de contenu : Surface irrigation methods-furrow and border-stip are generally thought of as being inefficient and labor intensive, careful evaluations have shown that as methods they can be very efficient and have low labor requirements. The broad reason for the poor reputation are the restraints in the usal water supply schedue and ignorance-it is not the method. The supply schedule is userally rigid in its duration - 24 hours/ and fixed in its flow rate. Ignorance of the technically involvd procedures to optimize operations in widespread. Surface methods appear deceptively simple. Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B026.43632 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43631 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43630 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43629 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43628 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43627 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43626 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B026.43625 CI-08026 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible Flexible water supply systems facilitated by use pilot projects / Merriam, J.L.
Titre : Flexible water supply systems facilitated by use pilot projects Type de document : texte imprimé Auteurs : Merriam, J.L. Mention d'édition : USCID Editeur : USCID Année de publication : 1991 ISBN/ISSN/EAN : CI-08024 Note générale : The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level... Langues : Anglais (eng) Mots-clés : Irrigation Eau Pluie Agriculture Drainage Inondation Hydraulique agricole Economie Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level... Note de contenu : The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level... Flexible water supply systems facilitated by use pilot projects [texte imprimé] / Merriam, J.L. . - USCID . - USCID, 1991.
ISSN : CI-08024
The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level...
Langues : Anglais (eng)
Mots-clés : Irrigation Eau Pluie Agriculture Drainage Inondation Hydraulique agricole Economie Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level... Note de contenu : The great value at the farm level of a flexible irrigation water supply systems is not yet widely understood at the planning and financing level. When such a system is established as a pilot project, the acceptance by the farmers and measured proof of the value, can help convince decision markers. The consistent increase in crops produced 20 percent to 40 percent/ the conservation of water and rainfall, the reduction of high water table problems/ the important farmer appreciated reduction in labord-up to 50 percent as well as making it more convenient as to time/ and the elimination of top ender-lowender contention and yield differences provides convincing evidence of value and economics of such systems at the farm level... Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B024.43624 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43623 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43622 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43621 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43620 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43619 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43618 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B024.43617 CI-08024 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible Flexivle irrigation supply pilot projects part : principles / Merriam, J.L.
Titre : Flexivle irrigation supply pilot projects part : principles Type de document : texte imprimé Auteurs : Merriam, J.L. Mention d'édition : Agricultural Engineering Department - California Polytechnic State University Editeur : Agricultural Engineering Department - California Polytechnic State University Année de publication : [1990] ISBN/ISSN/EAN : CI-08025 Note générale : The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling. Langues : Anglais (eng) Mots-clés : Irrigation Projet pilote Agriculteur Etude de cas Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling. Note de contenu : The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling. Flexivle irrigation supply pilot projects part : principles [texte imprimé] / Merriam, J.L. . - Agricultural Engineering Department - California Polytechnic State University . - Agricultural Engineering Department - California Polytechnic State University, [1990].
ISSN : CI-08025
The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling.
Langues : Anglais (eng)
Mots-clés : Irrigation Projet pilote Agriculteur Etude de cas Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling. Note de contenu : The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable rate water delivery systems, allowing upgraded on farm management. The need, value and some of the procedures for upgrading from present rigid rotation schedules to flexible farmer controlled arranged schedules are described. Mentioned is the need for farmer controlled water user associations. Also presented is the financial impact of the on-farm benefits to justify up graded project systems to allow flexible scheduling. Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B025.49840 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49839 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49838 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49837 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49836 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49835 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49834 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B025.49833 CI-08025 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible Float valve provides variable flow rates at low pressures / Merriam, J.L.
Titre : Float valve provides variable flow rates at low pressures Type de document : texte imprimé Auteurs : Merriam, J.L. Mention d'édition : Agricultural Engineering Department Polytechnic State University Editeur : Agricultural Engineering Department Polytechnic State University Année de publication : 1973 ISBN/ISSN/EAN : CI-08029 Note générale : "Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..." Langues : Anglais (eng) Mots-clés : Irrigation Ressource en eau Hydraulique agricole Economie Loi de la pression Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : "Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..." Note de contenu : "Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..." Float valve provides variable flow rates at low pressures [texte imprimé] / Merriam, J.L. . - Agricultural Engineering Department Polytechnic State University . - Agricultural Engineering Department Polytechnic State University, 1973.
ISSN : CI-08029
"Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..."
Langues : Anglais (eng)
Mots-clés : Irrigation Ressource en eau Hydraulique agricole Economie Loi de la pression Index. décimale : 631.58 Méthodes de culture : jachère, assolement irrigation Résumé : "Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..." Note de contenu : "Semi-closed and closed pipeline sustems can provide water delivery that is flexible in rate duration with ""fringer-tip"" control at the ultimate point of application. Such delivery is essential for efficient and economical use of water an labor. The water source must be capable of supplying water at variable rates and duration therefire an on-farm reservoir is frequently necessary. The extra capital investment to construct such a system is economically justified by reduced annual costs of labor and increased irrigation efficiency. Semi-closed systems utilizing a float valve actuated by down-stream water levels, permits deliveries at low relatively uniform..." Réservation
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Code-barres Cote Support Localisation Section Disponibilité CI03B029.142251 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142252 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142253 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142254 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142255 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142256 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142257 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible CI03B029.142258 CI-08029 Monographie Bibliothèque CDI-Ouaga Fond documentaire Disponible Gadigaltar tank irrigation pilot project : a farmer managed variable delivery irrigation system / Merriam, J.L.
PermalinkPipelines for flexible deliveries / Merriam, J.L.
PermalinkUpgrading of the orange cove irrigation district water distribution system / Merriam, J.L.
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