Film hole irrigation is an advanced low-cost and high-efficiency irrigation method, which can improve water conservation and water use efficiency. Given its various advantages and potential applications, we conducted a laboratory study to investigate the effects of soil texture, bulk density, initial soil moisture, irrigation depth, opening ratio (ρ), film hole diameter (D), and spacing on cumu...

We consider comparator-based nonlinear feedback systems, and use Tsypkin’s method to develop a strategy with which to find systems with low-pass linear part for which the describing function technique erroneously predicts limit cycles. We produce an infinite set of examples of systems with very low-pass linear parts for which the describing function technique predicts spurious limit cycles, and...

There is increasing evidence of the contribution of irrigation water in the contamination of produce leading to subsequent outbreaks of foodborne illness. This is a particular risk in the production of leafy vegetables that will be eaten raw without cooking. Retailers selling leafy vegetables are increasingly targeting zero-risk production systems and the associated requirements for irrigation ...

in order to investigate the effects of saline waters on some soil characteristics, this experiment was conducted with three irrigation water salinity treatments contains 1.7-3.4, 8-9 and 11-12.5 dsm-1 (low, medium and high salinity) and two irrigation water managements with four replications in a wheat-fallow-sugar beet-safflower rotation. results show that in (1) irrigation management with low...

Although in water-deficient regions, agricultural runoff, drainage water or surplus irrigation is often used, there are constraints related to its quality be considered (salinity, nutrients and pollutants). Thus, it necessary treat considering the low-energy supply systems available farmers. This work focuses on a nature-based treatment system consisting of two prototypes anaerobic bioreactors ...

Salmonella has been associated with a number of recent outbreaks of foodborne illness involving sprouted seeds. In this research, we addressed the design of sensor components intended for use in a fully automated detection system. A real−time PCR assay was developed to detect Salmonella in sprout irrigation water. Specific detection was achieved by targeting a region of the invasion gene, invA....