Identifying factors affecting optimal management of agricultural water

Samian, Masoud; Mahdei, Karim Naderi; Saadi, Heshmatollah; Movahedi, Reza

doi:10.1016/j.jssas.2014.01.001

Cited by 38 publications

(32 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to Iran's geographic information, the country is located in a semi-arid region on the Earth. Therefore, it can easily be claimed that the limitation of water resources is one of the major factors in the agricultural development of Iran (Samian et al, 2015). Water availability is one of the most important factors in governing crop production around the world.…”

Section: Introductionmentioning

confidence: 99%

Responses of Grain Maize to Plant Density at Different Irrigation Regimes

Samadvand¹,

Majidi

Heidari

et al. 2017

Not Sci Biol

View full text Add to dashboard Cite

In order to examine the effects of different plant densities, plant patterns and irrigation regimes on yield, yield components and harvest index of grain maize, a field experiment was conducted at Miyandoab Agricultural Research Station, Iran. A strip split plot experiment was conducted based on randomized complete block design with three replications. The results showed that the effect of plant density was significant on kernel yield, harvest index, 1,000 kernel weight. The highest kernel yield was obtained from 90,000 plants ha -1 density. Maximum grain yield (18.530 t ha -1 ) was obtained from furrow irrigation. However, there was no significant difference between moisture levels of 100% and 120% of field capacity. The lowest kernel yield was obtained at 80% field capacity. This study also showed that mean kernel weight and the number of kernels per row were the most determinant factors in grain yield formation. The highest and the lowest harvest indices were obtained at 120% and 80% treatments of field capacity treatment, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Responses of Grain Maize to Plant Density at Different Irrigation Regimes

Samadvand¹,

Majidi

Heidari

et al. 2017

Not Sci Biol

View full text Add to dashboard Cite

show abstract

“…In 1960s, Goldsmith, a professor of Yale University has started to do research on national balance sheet. During 1970s~1980s, economists of Britain, Canada, Sweden, Australia, Czech Republic and other countries began to prepare their national balance sheet [2]. National balance sheet frame became a tool for studying macro economy, evaluating sovereign debt risk and analyzing business cycle problem.…”

Section: Introductionmentioning

confidence: 99%

Application Research of Water Resources Balance Sheet in Public Project Governance

Liu¹,

Wang²

2017

JCC

View full text Add to dashboard Cite

Due to the fact that public project governance with water resources balance sheet has to be carried out under the influence of multiple uncertain factors, under present conditions of water resources shortage, extensive water utilization management mode could hardly be continued any longer. Combining the provisions of China's water conservation policy in the new era and the deployment of water conservation competent organizations relating to specific work in constructing water ecological civilization, and abiding by objective developing law to establish feasible objective and have a scientific un derstanding the factor of system are essential requirements of public project governance based on water resources balance sheet. For this purpose, this paper associates project governance with water resources balance sheet, which carries out research by focusing on water ecological environment protection in public project governance, and devotes itself to developing public project governance system module based on water resources balance sheet. In addition, the paper keeps in line with the principle of adjusting measures in view of water and basing the demand on water resources to study the application objective of water resources balance sheet in public project governance, so that to strive to make the progress of social economy to accommodate water environment and water resources carrying capacity. The paper may provide experiences and references for public project governance objective setting, governance system factors control and public project governance approach at the request of ecological civilization construction.

show abstract

“…Bajo estas condiciones, el uso eficiente del agua mejora el rendimiento económico a través de la reducción del consumo del agua y la energía (Yacoubi et al, 2012;Samian et al, 2015), además minimiza el impacto ambiental negativo the analysis by sections showed the lowest performance in sections one, two and the pendant. The analysis of the total rainfall showed high ratios CUh-ARA, CUh-Ea and Ea-ARA (R 2 = 0.9262, 0.8661, 0.9041, respectively) and for sections only in CUh-ARA (R 2 = 0.7648); the performance indicators CUh and ARA are sufficient to evaluate the quality of irrigation.…”

Section: Introductionunclassified

“…EEl agua es un factor clave en la sociedad humana y su cuidado es un desafío constante (Samian et al, 2015). A escala mundial, la disponibilidad de recursos de agua dulce fácilmente accesible es limitada (Yacoubi et al, 2012;Cisneros et al, 2014).…”

Section: Introductionunclassified

“…En México se destinan alrededor de 22 millones de hectáreas para la agricultura, 6.4 millones se cultivan bajo riego y de ellas, 10% utiliza sistemas de riego presurizados (CONAGUA, 2009), pero con una eficiencia global del uso del agua que no sobrepasa 40% (INIFAP, 2010). Como resultado de las bajas eficiencias de aplicación del riego por gravedad, es necesario estudiar diferentes alternativas de manejo del riego (Flores et al, 2014).Bajo estas condiciones, el uso eficiente del agua mejora el rendimiento económico a través de la reducción del consumo del agua y la energía (Yacoubi et al, 2012;Samian et al, 2015), además minimiza el impacto ambiental negativo the analysis by sections showed the lowest performance in sections one, two and the pendant. The analysis of the total rainfall showed high ratios CUh-ARA, CUh-Ea and Ea-ARA (R 2 = 0.9262, 0.8661, 0.9041, respectively) and for sections only in CUh-ARA (R 2 = 0.7648); the performance indicators CUh and ARA are sufficient to evaluate the quality of irrigation.…”

unclassified

See 1 more Smart Citation

Relación entre indicadores de desempeño y la calidad del riego utilizando pivote central

Mondaca¹,

Valdés

López

et al. 2017

Remexca

View full text Add to dashboard Cite

ResumenEl uso del agua para la agricultura en regiones bajo condiciones de escasez y bajas eficiencias, requieren de investigación, innovación y una apropiada transferencia tecnológica, para mejorar la calidad del riego. Las herramientas para optimizar el uso del agua incluyen sistemas de riego presurizados, que a pesar de las ventajas tecnológicas, requieren de un mantenimiento y operación adecuados para el correcto funcionamiento agronómico e hidráulico, por que su evaluación debe ser un procedimiento rutinario. El sistema de riego por pivote central presenta ventajas sobre otros sistemas presurizados y es una buena opción para la producción de algunos cultivos. Los índices de desempeño tradicionales son el coeficiente de uniformidad y uniformidad de distribución del agua. El objetivo del estudio fue comparar la calidad del riego a partir de los indicadores de desempeño: coeficiente de uniformidad de Heermann y Hein (CUh), uniformidad de distribución (UD), área regada adecuadamente (ARA) y eficiencia de aplicación (Ea) y determinar la relación entre ellos. Las evaluaciones pluviométricas se realizaron en el norte de Sinaloa, México, en dos ciclos agrícolas (2013)(2014)(2015). La pluviometría mostró AbstractThe use of water for agriculture in regions under conditions of scarcity and low efficiencies, requires research, innovation and an appropriate technological transfer, to improve the quality of irrigation. The tools to optimize the use of water include pressurized irrigation systems, which despite the technological advantages, require proper maintenance and operation for the correct agronomic and hydraulic operation, so its evaluation must be a routine procedure. The central pivot irrigation system has advantages over other pressurized systems and is a good choice for the production of some crops. The traditional performance indices are the coefficient of uniformity and uniformity of water distribution. The objective of the study was to compare irrigation quality based on performance indicators: the Heermann and Hein (CUh) uniformity coefficient, distribution uniformity (UD), adequately irrigated area (ARA) and application efficiency (Ea) and determine the relationship between them. The rainfall assessments were conducted in northern Sinaloa, Mexico, in two cropping cycles (2013)(2014)(2015). Rainfall showed a "high quality" irrigation with a "very well-watered" area,40 Rev. Mex. Cienc. Agríc. Vol.8 Núm. 1 01 de enero -14 de febrero, 2017 César Arturo Palacios Mondaca et al.una "alta calidad" del riego con un área "muy bien regada", el análisis por tramos mostró el menor desempeño en los tramos uno, dos y el colgante. El análisis de la pluviometría total mostró alta relaciones CUh-ARA, CUh-Ea y Ea-ARA (R 2 = 0.9262, 0.8661, 0.9041, respectivamente) y por tramos solo en CUh-ARA (R 2 = 0.7648); los indicadores de desempeño CUh y ARA son suficientes para evaluar la calidad del riego.Palabras clave: área regada adecuadamente, eficiencia, riego por aspersión, uniformidad. IntroducciónEEl agua es un factor clave e...

show abstract

Identifying factors affecting optimal management of agricultural water

Cited by 38 publications

References 3 publications

Responses of Grain Maize to Plant Density at Different Irrigation Regimes

Responses of Grain Maize to Plant Density at Different Irrigation Regimes

Application Research of Water Resources Balance Sheet in Public Project Governance

Relación entre indicadores de desempeño y la calidad del riego utilizando pivote central

Contact Info

Product

Resources

About