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This study aimed to evaluate the potential of clogging of a drip irrigation system operating with primary domestic sewage (EDP) and supply water (AA) in the rural community of semiarid Potiguar - RN, Brazil. The experimental area is located in the rural community of Milagres in Apodi - RN. The treatments studied were: T1 = 100% of EDP, T2 = 75% of EDP + 25% of AA, T3 = 50% of EDP + 50% of A ...

SUBJECT: reutilización de aguas; réutilisation des eaux; 加肥灌溉; irrigation fertilisante; water reuse

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The purpose of this study was to analyse the clogging susceptibility of drippers operating with swine wastewater. The dripper models Naan-Tif, Naan Drip Paz 25 and Plastro Hydro PC were tested. Every 20 h of functioning as subunits of fertigation, flow rate (Q) and uniformity of water application were evaluated, by means of the coefficient of uniformity of distribution (CUD). In accordance ...

SUBJECT: effluent; 流出物; effluents; efluentes

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The efficiency of chemical treatment to prevent the clogging of emitters applying treated sanitary sewerage is discussed. The experiment was carried out at the Sewerage Treatment Pilot Plant of the Universidade Federal de Viçosa, Viçosa MG Brazil. A test platform was built for this experiment to supply four units of drip irrigation with treated sanitary sewerage, filtered in a 120-mesh disc ...

SUBJECT: الكلورة; cloración; chloration; 氯化; acidification

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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: Streamflow regionalization is an important tool for estimating the streamflows along the hydrography, however, extrapolation of regionalization equations is not recommended beyond the limits of the sample data. This study aimed to present alternatives to minimize risks associated with the extrapolation of regionalization equations for low flows. The study was conducted for Pará river basi ...

SUBJECT: eau disponible; disponibilidad del agua; 水可用性; الماء المُتاح; water availability

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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A methodology was developed using a Geographic Information System (GIS) to select, design, install and manage an irrigation system for a farm. GIS was used to develop different thematic layers, each consisting of a particular attribute required for analysis of alternative irrigation system types. These layers included data such as: topography, soil texture, soil water retention, bulk densit ...

SUBJECT: gis; sig; riego; irrigation; 灌溉

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The hydraulic performance of the subunits of a drip irrigation system with coffee fruit wastewater was evaluated. The experiment was performed at the Hydraulic, Irrigation and Drainage Experimental Area of the Agricultural Engineering Department, at the Federal University of Viçosa, Viçosa, MG, Brazil. The structure was composed of non-compensable dripper tapes 0.3 m apart. Two irrigation s ...

SUBJECT: معدل الجريان; 流速; débit; système de distribution d'eau; flow rate

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The objective of this paper is to assess the effects of both fallow and overgrazing on hydrological and sedimentological responses to natural precipitation. The research has been lead in the desertification area of Iraucuba, Brazil, whose soil is a typical Natric Ortic Planosol, A weak. Sixteen months of experiments have been executed in two hillslopes: a preserved (EP – 370 m²) and a degr ...

SUBJECT: أرض مستريحة; ruissellement; fallow; 休耕地; إنسيال سطحي

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The objective of this study was to evaluate the leaf area, total chlorophyll content and leaf water potential, correlating them with cowpea (Vigna unguiculata (L.) Walp.) yield, under different water depths. The experiment was carried out at Embrapa Meio-Norte, in Teresina, PI, Brazil, from September to November 2009. The BRS Guariba and BRS Paraguaçu cultivars were used. Five irrigation de ...

SUBJECT: كمون الماء; tensión de absorción; potentiel hydrique; 水势; vigna unguiculata

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The low rainfall and the irregularity in the distribution of annual rainfall in the Brazilian semiarid region are among the factors that cause the instability of agricultural production. Thus, the present study aimed to obtain quality indicators of rainwater harvested on asphalt, as well as to estimate the potential catchment runoff on paved roads semiarid region in the State of Bahia. For ...

SUBJECT: صهاريج; riego; runoff; escorrentia; 箱

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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The release of untreated domestic sewage in environment negatively impacts the quality of life of populations. The present study aimed to analyse the removal of oil (O) and total solids (TS) in biofilters operating with primary domestic sewage. Experimental tests were conducted at the Federal University of Viçosa (UFV) in Viçosa - MG, Brazil. The experiment was carried out in a split split ...

SUBJECT: إستدامة; traitement des déchets; ver de terre; waste treatment; 可持续性

POSTED TO: WRIM - Water Resources and Irrigation Management [2316-6886]

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