نتایج جستجو برای: optimal irrigation depth

تعداد نتایج: 561413  

2008
V. M. Maldonado H. O. Rubio Arias R. Quintana R.A. Saucedo M. Gutierrez J. A. Ortega G.V. Nevarez

An area near the city of Chihuahua has been traditionally irrigated with wastewater to grow forage crops. It has been hypothesized that metal levels could be found in these soils high enough to cause potential health problems to the population. The objective of this study was to determine heavy metal concentrations in different soils due to irrigation practices. Four soil types were evaluated; ...

Journal: :Geochemical Transactions 2002
Carla M Koretsky Christof Meile Philippe Van Cappellen

Irrigation by benthic macrofauna has a major influence on the biogeochemistry and microbial community structure of sediments. Existing quantitative models of bioirrigation rely primarily on chemical, rather than ecological, information and the depth-dependence of bioirrigation intensity is either imposed or constrained through a data fitting procedure. In this study, stochastic simulations of 3...

2015
Ali BAGHERZADEH Parisa PAYMARD

Bagherzadeh A., Paymard P. (2015): Assessment of land capability for different irrigation systems by parametric and fuzzy approaches in the Mashhad Plain, northeast Iran. Soil & Water Res., 10: 90–98. Water quality and quantity in agricultural systems of arid and semiarid regions of the world are of great importance. In this regard the trend to pressurized irrigation systems compared to surface...

2012
A. Satriani A. Loperte M. Catalano

The impact of climate change on the ecosystem of the Mediterranean Sea basin will be manifested mainly by a significant reduction in water resources, because of rising temperatures and lower rainfall despite the increase in heavy precipitation events. Water is a fundamental resource for the metabolic activities of plants in agriculture. Unfortunately this resource is available in limited quanti...

2010
Huiying Yang Haijun Liu Yan Li Guanhua Huang Fengxin Wang

An experiment was conducted to study the effects of different soil water potential (SWP) on soil water content, hot pepper’s yield, water consumption and water use efficiency (WUE) under plastic-mulched drip irrigation in the North-West China in order to find a suitable SWP to guide the pepper irrigation. Five treatments were set based on SWP, they were -10kPa (N1), -20kPa (N2), -30kPa (N3), -4...

Journal: :avicenna journal of dental research 0
m sahebjam atabaki assistant professor, department of priodontology, faculty of dentistry, esfahan university of medical sciences, , iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (isfahan university of medical sciences) j moradi haghgoo assistant professor, department of priodontology, faculty of dentistry, hamadan university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) m khoshhal assistant professor, department of priodontology, faculty of dentistry, hamadan university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) r arabi assistant professor, department of priodontology, faculty of dentistry, hamadan university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) a khodadoostan assistant professor, department of priodontology, faculty of dentistry, hamadan university of medical sciencesسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) l gholami post graduate student of periodontology, faculty of dentistry, hamadan university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

statement of the problem subgingival irrigation with an antimicrobial agent after scaling and root planing (srp) is assumed to be able to kill the bacteria left behind after mechanical debridement. 3% h2o2 is used in the treatment of periodontal disease and it has been shown effective in killing anaerobic pathogens. purpose the aim of this study was to evaluate the clinical effects of subgingiv...

2011
Ronghua Ji Lijun Qi Zicheng Huo

The precious irrigation is great significance for arid and semiarid area. According to the special environment of greenhouse, a fuzzy control algorithm was proposed to make an optimal irrigation strategy based on the actual measured soil humidity during the whole plant growth process. The fuzzy control system had two inputs (soil humidity error and its rate) and one output (water level differen...

2014
Marcelo R. dos Santos Mauro A. Martinez Sérgio L. R. Donato Eugênio F. Coelho

This study aimed to evaluate the fruit yield and the distribution of ‘Tommy Atkins’ mango root system under different irrigation regimes in the semiarid region of Bahia. The experimental design was completely randomized with five treatments and three replicates: 1 Irrigation supplying 100% of ETc in phases I, II and III; 2 Regulated deficit irrigation (RDI) supplying 50% of ETc in phase I (begi...

جهاد اکبر, محمدرضا , فرزام‌نیا, مسعود , میران‌زاده, مختار ,

Iran is one of the countries that is located in world's arid and semi-arid regions and is constantly subjected to water shortage. One of the effective methods for reducing water consumption and increasing production in agricultural sector is greenhouse culture. By using proper irrigation management in greenhouse, we are able to utilize water, soil and fertilizer to produce high yield and qualit...

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