lysimeter tests were conducted on shallow groundwater that supplies part of the maize water requirements to determine crop yield. twenty-four 0.8 m diameter lysimeters were buried in the test field at a depth of 1.2 m. the lysimeters were filled with the field soil (silty loam) and planted with summer maize. the groundwater depth in the lysimeters was set at 0.6 m using marriotte bottles. three...

This study aimed to gain new insights into urban hydrological balance (in particular, the evaporation from paved surfaces). Hourly data were obtained simultaneously two high-resolution weighable lysimeters. These lysimeters are covered in pavement sealing types commonly used for sidewalks Berlin, namely cobble-stones and concrete slabs. A paired experiment field conditions is designed determine...

Nitrification inhibitors (Thiourea and nitrification inhibitor “A”) with urea fertilizer were used to enhance the nitrogen efficiency. Nitrification inhibitors and the amount of nitrogen were applied through urea fertilizer to rice seed in Column Lysimeters. The whole experiment was conducted with following treatments such as; urea application as a control at 2gN/10kg (200 kg N/ha), urea applic...

The decline in water quality in Lake Taupo has been attributed to nitrogen (N) leaching from surrounding land areas. Pastoral agriculture has been identified as a significant contributor to this N transfer to the lake through animal urine deposition. There is therefore an immediate need for new management options to reduce N losses. The objective of this study was to measure the effectiveness o...

Physical changes that occur on the surface of fired shots due to firing and impact with soil may increase the dissolution of muniton metals. Increased metal dissolution could potentially increase metal transport and leaching, affecting metal concentrations in surface and groundwater. This research describes the relationship between the surface changes on fired tungsten-nickel-iron (94% W:2% Ni:...

Citrus latifolia is increasingly being cultivated in Mediterranean areas, where the need for precise irrigation implies a sound knowledge of crop's water requirements, which carried out by monitoring tree status plant-soil-atmosphere system. Two year-old lime trees (Citrus Tan. cv. Bearss) were 45 L weighing pot-lysimeters filled with clay-loam soil and equipped sensors recording real-time stat...

Abstract Most biogeochemical models simulate water dynamics using the tipping bucket approach, which has been often found to be too simplistic represent vadose zone adequately under shallow groundwater conditions. Recently, a solution Richards equation Mualem–van Genuchten model (Rich‐vGM) added into EPIC (Environmental Policy Integrated Climate) address this shortfall. Its performance was test...