Home > VI International Symposium on Irrigation of Horticultural Crops > A PROTOTYPE OF AUTOMATIC PRESSURE PUMP (TYPE SCHÖLANDER PUMP)

Articles

A PROTOTYPE OF AUTOMATIC PRESSURE PUMP (TYPE SCHÖLANDER PUMP)

Article number

889_78

Pages

609 – 616

Language

English

Abstract

A prototype for the automation of a pressure pump type Schölander is being developed.
Determining the total water potential (TWP) using a pressure pump (Schölander pump) depends on the proper use and training of the operator but this does not ensure the accuracy and precision of the measurements being made.
To avoid this problem, we are developing an automatic control and measurement system.
The prototype system consists in of automatic controller that controls a valve with differential step pressure control (which allows gradual increases in pressure inside the chamber) and optical sensor (which determine when water runs out of the petiole). With the integration of these components, it is possible to make the measurement automatically and it eliminates the human error in determining the TWP. On the other hand, this prototype allows the standardization of the speed and the increment of the pressure differential on the determination of TWP.

Publication

VI International Symposium on Irrigation of Horticultural Crops

Authors

S. Villagrán, C. Correa, R. Radrigán

Keywords

pressure chamber, PID controller, TWP

Full text

https://doi.org/10.17660/ActaHortic.2011.889.78

Online Articles (79)

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12. USE OF THERMAL IMAGERY TO DETECT WATER STRESS DURING BERRY RIPENING IN VITIS VINIFERA L. ‘CABERNET SAUVIGNON’

13. ESTIMATION OF DAILY ACTUAL EVAPOTRANSPIRATION OVER A ‘MERLOT’ VINEYARD USING METEOROLOGICAL AND REFLECTANCE DATA

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16. TOWARDS THE SPATIAL PREDICTION MODEL OF VINE WATER STATUS USING ANCILLARY INFORMATION

17. MODELLING THE EFFECTS OF NIÑO AND NIÑA EVENTS ON WATER BALANCE OF GRAPEVINE (‘CABERNET SAUVIGNON’) IN CENTRAL VALLEY OF CHILE

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18. ON THE INTEREST OF INTRODUCING IRRIGATION AND CHANGING PRACTICES TOMORROW IN SOME FRENCH VINEYARD AREAS

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19. WATER USE BY DRIP-IRRIGATED EARLY-SEASON PEACH TREES

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21. WATER PRODUCTIVITY OF PEACH FOR PROCESSING IN A SOIL WITH LOW AVAILABLE WATER HOLDING CAPACITY

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22. SOIL WATER CONTENT VARIATIONS AS WATER STRESS INDICATOR IN PEACH TREES

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24. FOUR YEARS OF RDI DURING STAGE-II VERSUS STAGE-III IN PEACHES FOR PROCESSING: YIELD AND QUALITY

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M.G. Mameli | L. Zucca | M. Maxia | G. Manca | M. Satta

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E. López-Mata | J.M. Tarjuelo | J.A. de Juan | R. Ballesteros | A. Domínguez

62. EVALUATION OF DRIP IRRIGATION SYSTEMS FOR BLUEBERRY ORCHARDS IN SOUTH CENTRAL CHILE

J. Jara | E. Holzapfel | A. Quiñónez | M. Soto

63. EVALUATION OF A MICRO-SPRINKLER IRRIGATION SYSTEM AT AN APPLE FARM IN THE CENTRAL VALLEY OF CHILE

E. Holzapfel | J. Jara | G. Martínez

64. DRIP IRRIGATION FOR ESTABLISHMENT OF STRAWBERRY TRANSPLANTS IN SOUTHERN CALIFORNIA

O. Daugovish | B. Faber | M. Mochizuki

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C. Schilardi | J.A. Morábito | R.C. Vallone

66. IRRIGATION PERFORMANCE INDICATORS FOR BEST IRRIGATION MANAGEMENT IN AN IRRIGATION DISTRICT

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67. IRRIGATION CHARACTERIZATION USING PERFORMANCE INDICATORS OF WATER AND ENERGY USE IN IRRIGATION WATER USER’S ASSOCIATIONS – A CASE STUDY IN THE IRRIGATION WATER USER’S ASSOCIATION OF ALBATERA (ALICANTE) SPAIN

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P.M. Gil | R. Ferreyra | C. Barrera | C. Zúñiga | L.A. Gurovich

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A. Navarro | M. Mastrorilli | A. Elia | G. Conversa

73. EFFECT OF MULCHING AND IRRIGATION ON CONTAINER-GROWN PLANT PRODUCTION

G. Amoroso | P. Frangi | R. Piatti | A. Fini

74. ALTERNATIVE NURSERY MANAGEMENT SYSTEMS: CLOSED-LOOP AND HIGH RETENTION MAT

R. Piatti | P. Frangi | G. Amoroso

75. BIOMASS FORMATION AND NUTRIENT PARTITIONING IN POTTED LONGAN TREES UNDER PARTIAL ROOTZONE DRYING

76. SOIL MOISTURE PROFILES UNDER DIFFERENT CONDITIONS ASSOCIATED WITH IRRIGATION EFFICIENCY OF DRIP IRRIGATION – CASE STUDIES FROM AVOCADO AND MANDARIN, LIMARÍ RIVER VALLEY

A. Osorio | M. Cortés | K. Rypowski | M. Burgos

77. ATMODRIPPER SYSTEM FOR PRECISION PLANT IRRIGATION

A.G. Calbo | W.A. Marouelli

78. A PROTOTYPE OF AUTOMATIC PRESSURE PUMP (TYPE SCHÖLANDER PUMP)

S. Villagrán | C. Correa | R. Radrigán

79. EARLY WATER STRESS ASSESSMENT AND AUTOMATIC IRRIGATION SYSTEM OPERATION BASED ON ELECTRICAL SIGNALING IN FRUIT TREES

L.A. Gurovich | P.A. Oyarce