The Senegal River Delta located in north-western is a strategic region for the development of irrigated rice cultivation achieving self-sufficiency. presence shallow salty water table often considered as brake to irrigation, by causing salinization soil, although mechanisms operation are not well known. An experimental study was carried out paddy village Ndiaye, 35 km north from Saint Louis, ch...

Within the framework of these studies, issues related to modification composition heavy concrete based on a polydisperse binder with complex modifier and its influence formation structure properties cement stone, as well hardened concrete, are considered. The purpose study is substantiate possibility obtaining effective for irrigation drainage construction improved indicators operational in ter...

water user associations (wuas) are one of the water market development models and a way to transfer the irrigation management from government sector to water users which have been increasingly taken into account over the recent years. in iran accordingly, a number of wuas has been developed in downstream dam irrigation and drainage networks on pilot scale. the major goal of wuas is to improve w...

The purpose of the study is to identify ecological aspects state natural and technical systems in zone irrigated agriculture effect on example hydrographic network left bank Lower Don. Semikarakorsky district Rostov region was chosen as object study. subject water quality natural-technical – receivers collector-drainage runoff from reclaimed lands, network, irrigation channels, well hydrochemic...

Proper N fertilizer and irrigation management can reduce nitrate leaching while maintaining crop yield, which is critical to enhance the sustainability of vegetable production on soils with poor water and nutrient-holding capacities. This study evaluated different methods to measure nitrate leaching in mulched drip-irrigated zucchini, pepper, and tomato production systems. Fertigation rates wer...

Reuse of saline subsurface drainage water for irrigation has been identi®ed as a potential option for managing drainage volumes and sustaining crop productivity in California's San Joaquin Valley. Soil surface structural instability, crusting and poor stand establishment may, however, be constraints in drainage reuse systems. The objective of this ®eld study was to evaluate the effectiveness of...

chronic subdural hematoma (csdh) is a curable entity frequently encountered by neurosurgeons. the present study was conducted to explore expert opinion and common practice in iran. besides, a review of randomized clinical trials in literature was performed. a questionnaire including six questions discussing major aspects of practice on csdh, with multiple choices was designed. a pilot study was...