in ordet to investigate economic efficiency of five cultural systems in sugar beet crop, including high input, medium input  low input , high  and medium inputs without 3 times irrigation after emergence, an experiment was conducted over  two years  (2002-2003) in agricultural and natural resources research center of khorasan. these systems were analysed by marginal analysis and  linear program...

ABSTRACT- Maize production, which is ranked after wheat and barely in Fars province, Iran, needs a considerable amount of irrigation water that is not available in scarce water conditions in drought situations. Therefore, proper planting method can improve irrigation water management. The objectives of the present study were to investigate the effects of two planting methods, on-bed and in furr...

Abstract Nowadays, the development of irrigation is increasingly recognized as a necessary factor in agriculture, primarily because global warming. Depending on field conditions, most commonly used method sprinkler irrigation. The spray uniformity sprinklers installed equipment can be characterized by Christiansen-uniformity coefficient (CUc%) and distribution (DU%). Our investigations were car...

Dried stigma of saffron is the most expensive spice in world. In Iran, majority farms use traditional basin method for irrigation, which, together with other irrigation methods may soon face serious problems because droughts future. Making an evaluation regional crop response to important adoption a proper management strategy. this study, effect employing different methods, including sprinkler,...

Irrigation monitoring is of great importance in agricultural water management to guarantee better use efficiency, especially under changing climatic conditions and scarcity. This study presents a detailed assessment the potential Sentinel-1 (S1) Synthetic Aperture Radar (SAR) data detect irrigation events at plot scale. The S1 was carried out using Event Detection Model (IEDM) over semi-arid te...

Irrigation water is limiting for crop production in arid and semi-arid areas. Furthermore, excess nitrogen (N) application is a source of groundwater contamination. Partial root drying irrigation (PRD) can be used as water saving technique and a controlling measure of groundwater N contamination. The objectives of this investigation were to evaluate the effect of ordinary furrow irrigation (OFI...