nitrogen and phosphorus from agriculture, the wastewater sector and the air pathway into groundwater, surface waters and the … Institute calculated nitrogen balances of agriculture on municipal areas and an analysis of the effect of the amended Fertiliser …

winegrowrs' knowledge levels, problem awareness and management changes regarding nitrogen. The study's core was a standardized …

for constructing PIOTs from process engineering models. The method was tested on a PIOT for nitrogen with a subset of … sectors in Illinois (USA) and compared with a nitrogen PIOT developed earlier for the same time period, finding equal or …

including changes in (i) rates of nitrogen application, (ii) supplementary irrigation and (iii) new cultivar (with higher … radiation use efficiency) on maize cropping systems over Africa based on 30 years (1980-2010) of climate, soil and management … traditional cultivars and average nitrogen application rates of <10 kg N ha-1. The model results showed that the combined changes …

nitrogen fertilization rate, b) adjustment of sowing date, c) implementation of new cultivars, and d) supplementary irrigation … global datasets at 0.5ê x 0.5ê spatial resolution. The nitrogen and cultivar packages were tested for all six countries … improvements across the packages were obtained by increase in nitrogen application rate, assuming that other nutrients like …

lower while carbon (C) and nitrogen (N) concentrations were higher compared to the NFSI II. The C and N stocks deviate even …

and preliminary economic modeling to evaluate ion exchange columns, one technical option for recovering nitrogen from … urine in Nairobi, Kenya. This technology could be combined with phosphorus recovery and a disinfection step to allow local … efficiency (>90%) of the adsorbent, was consistent over ten adsorption-regeneration cycles and with columns ten times larger than …

polluted areas. Against this background, a tool was developed that quantifies agricultural nitrogen emissions with high spatial … resolution, at the municipality level and also within the municipality. The results provide detailed nitrogen budgets for the … monitoring, and to inform agricultural nitrogen management. The results enable the identification of pollution hot spots as well …

In addition to other nitrogen sources, nitrogen emissions from agriculture pollute waters and other environmental media … the impact of the Hessian water protection advisory service in the context of the EU Water Framework Directive on nitrogen …

phosphorus, calcium, manganese and zinc. Phytase supplementation caused a decrease in phosphorus excretion by 8% in the group …. Phytase supplementation increased the retention of phosphorus by 31% in laying hens receiving 500 FTU and 57% in the group …