Advantages of Subsurface Irrigation for Processing Tomatoes

Phene, C. J.; Davis, Keith; Hutmacher, R. B.; McCormick, Robert L.

doi:10.17660/actahortic.1987.200.9

Cited by 75 publications

(45 citation statements)

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“…In addition to the studies that have monitored the wetting pattern (e.g., Souza & Matsura, 2003;Mirzaei et al, 2009;Samadianfard et al, 2012;Subbaiah, 2013), other studies have attempted to control or modify it. Phene et al (1987) indicated that the wetted pattern around a buried emitter could be managed by regulating the irrigation frequency; these authors demonstrated that increasing the irrigation frequency with reduced volume per application draws the water toward the soil surface.…”

Section: Introductionmentioning

confidence: 99%

The effects of three techniques that change the wetting patterns over subsurface drip-irrigated potatoes

Elnesr¹,

Alazba²

2015

Span. j. agric. res.

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Wetting pattern enhancement is one of the goals of irrigation designers and researchers. In this study, we addressed three techniques (dual-lateral drip, intermittent flow and physical barrier methods) that change the wetting pattern of subsurface drip irrigation. To study their effect on the yield and water-use efficiency (WUE) of potatoes, field experiments were conducted for four seasons, during which the soil-water balance was continuously monitored using a set of capacitance probes. The results of the soil water patterns showed that both the dual-lateral and intermittent techniques increased lateral water movement and eliminated deep percolation, whereas the physical barrier had a limited effect on the top soil layer. The crop results indicated that the yield and WUE increased significantly in response to the application of the dual-lateral drip (up to 30%); the intermittent application also positively affected the yield (~10%) and the WUE (~14%), but these effects were not statistically significant according to the statistical model. The physical barrier showed a non-significant negative effect on the yield and WUE. These findings suggest the following recommended practices: the use of dual-lateral drip technique due to its beneficial results and its potential for increasing yields and reducing water consumption; the application of intermittent flow with more than three surges; and restricting the use of physical barriers to soils with high permeability.Additional key words: intermittent application; subsurface drip irrigation; dual-lateral drip; physical barrier; water movement in the soil; Solanum tuberosum L.Abbreviations used: CWT (consumed water per tuber); DM (dry matter); H (dual later technique); LSD (least significant difference); P (physical barrier technique); S (intermittent application technique); SC (starch content); SG (specific gravity); WC (water content); WUE (water-use efficiency).Citation: Elnesr, M. N.; Alazba, A. A. (2015). The effects of three techniques that change the wetting patterns over subsurface drip-irrigated potatoes.

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Section: Introductionmentioning

confidence: 99%

The effects of three techniques that change the wetting patterns over subsurface drip-irrigated potatoes

Elnesr¹,

Alazba²

2015

Span. j. agric. res.

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“…According to plot and field applications conducted by the Water Management Research Laboratory, and reviewed by Ayars et al [32], the application of SDI, resulted in significant yield and water use efficiency in tomato, cotton, sweet corn, alfalfa, and cantaloupe. Furthermore, Phene et al [33] presented significant yield increases in tomatoes cultivation by using high frequency SDI and precise fertility management. The major disadvantages of such systems are the higher investment and management costs than conventional irrigation systems [34].…”

Section: Installation Of a Sub-surface Drip Irrigation Systemmentioning

confidence: 99%

Improving the eco-efficiency of an agricultural water use system

Georgopoulou

Angelis-Dimakis

Arampatzis

et al. 2015

Desalination and Water Treatment

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During the last two decades, the concept of eco-efficiency has been recognized as a suitable measure of progress towards a greener and more sustainable economy. The prefix "eco-" refers to both economic and ecological (environmental) performance. The need for improving eco-efficiency leads to the challenge of identifying the most promising alternative solutions which improve both the economic and the environmental performance of a given system ("eco-innovations"). Therefore, it becomes critical to develop eco-efficiency metrics for measuring environmental and economic performance of a system.The current paper presents a methodological framework that attempts to explore the use of ecoefficiency indicators in meso-level water use systems and through them to assess the impact of innovative technologies in such systems. The assessment of the environmental performance follows a life-cycle oriented approach using the midpoint impact categories while the economic performance is measured using the Total Value Added to the product due to water use. The ecoefficiency is expressed as the ratio of the economic performance indicator to the environmental performance indicator. The proposed approach is applied to a water use system of the agricultural sector, and more specifically to the fresh form tomato crop production in Phthiotida.The analysis reveals that the most important environmental impacts of the system are (i) greenhouse gas emissions due to energy consumption, (ii) release of toxic substances, due to the use of fertilizers and pesticides and (iii) depletion of freshwater resources. Three alternative interventions are examined for upgrading the value chain: (i) installation of sub-surface drip irrigation system, (ii) replacement of diesel pumps with solar pumps and (iii) use of organic fertilizers.Based on the findings, all of the proposed interventions have a positive impact on the overall ecoefficiency of the system. Sub-surface drip irrigation is the least favorable mainly due to its high investment cost. The use of solar pumps strongly influences climate change and photochemical ozone formation while the use of organic fertilizers has a more balanced impact on all indicators, with an emphasis on eutrophication. Thus, for a more holistic approach, regarding the ecoefficiency performance, a combined application of these three scenarios may be proposed.

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“…Además que el bulbo húmedo alrededor del emisor enterrado puede ser condicionado por la frecuencia de riego, si el interés es ampliar su volumen, la frecuencia de riego deberá ser aumentada (Phene, et al, 1987).…”

Section: Manuel Antonio N Vásquez Marcos Vinícius Nildo Da Silva Yunclassified

Fertirriego por goteo superficial y enterrado del melón (Cucumis melo L.) en invernadero

et al. 2006

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Pueden ser remitidas discusiones sobre el artículo hasta seis meses después de la publicación del mismo siguiendo lo indicado en las "Instrucciones para autores". En el caso de ser aceptadas, éstas serán publicadas conjuntamente con la respuesta de los autores. INTRODUCCIÓNEl melón es uno de los productos de mayor expresión económica de la agricultura irrigada en el Brasil, con una exportación en 2001 de 99430 t, equivalentes a 39,3 millones de US$ (FNP Consultoría & Comercio, 2002). La región Nor Oeste se destaca como la principal productora de melón, con una participación en la productividad nacional superior a 50 %, presentando una productividad en torno de 22 a 40 t ha -1 , con productos de excelente aceptación en el mercado internacional. Esta región presenta buenas condiciones ambientales para este cultivo, con altas temperaturas y baja humedad relativa del aire (Monteiro, 1995).En virtud de que, en algunas regiones de Brasil, el cultivo de melón al aire libre se restringe a los meses más secos del año, la opción por el invernadero permite prolongar la producción de melón desde la primavera hasta el otoño, mostrándose económicamente viable. Por tanto, existen algunos procedimientos técnicos que deben ser ajustados para el manejo adecuado de este cultivo en invernaderos, evitando problemas originados por la modificación de su ambiente, dentro de los cuales está la dificultad de establecer las dotaciones y momento en que se debe aplicar el riego. FERTIRRIEGO POR GOTEO SUPERFICIAL Y ENTERRADO DEL MELÓN (Cucumis melo L.) EN INVERNADERO

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Advantages of Subsurface Irrigation for Processing Tomatoes

Cited by 75 publications

References 0 publications

The effects of three techniques that change the wetting patterns over subsurface drip-irrigated potatoes

The effects of three techniques that change the wetting patterns over subsurface drip-irrigated potatoes

Improving the eco-efficiency of an agricultural water use system

Fertirriego por goteo superficial y enterrado del melón (Cucumis melo L.) en invernadero

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