Journal of Biochemistry Research

Nitrogen Fertilization Quality Articles

 Nitrogen (N) fertilization can greatly expand plant productivity but needs to be carefully achieved to avoid harmful environmental impacts. Nutrient management guidelines aimed at sinking harmful forms of N loss such as nitrous oxide emissions and nitrate leakage have been tailored for many cropping systems. The emerging bioenergy industry is likely to make use of novel cropping systems, such as polycultures of perennial species, for which we have limited nutrient management experience. We studied how a switchgrass monoculture, a 5-species native grass mixture and an 18-species re-established prairie responded to annual fertilizer applications of 56 kg N ha-1 in a field-scale agronomic test in south-central Wisconsin over a 2-year period. We experiential greater fertilizer-induced N2O emissions and sub-rooting zone NO3- concentrations in the switchgrass monoculture than in either polyculture.  

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