nutrients (total nitrogen and total phosphorous) in the Shenandoah River. The mean Chl a concentration for 555 nm, 560 nm and ….56. Chemometrics analysis show that total phosphorous, nitrogen and turbidity can be predicted between 450 to 555nm and 670 to 710 nm … used to develop predictive models to determine sensitive spectral variables for nitrogen, phosphorous, Chl-a, and CDOM. …

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 … 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 …

Nitrogen (for initial cooldown of the cryogenics plant). There is no inclusion of any contingency or management reserve. If the …