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Nitrogen related diffuse pollution from horticulture production - mitigation practices and assessment strategies
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Resumo(s)
Agriculture is considered one of the main nitrogen (N) pollution sources through the diffuse
emissions of ammonia (NH3) and nitrous oxide (N2O) to the atmosphere and nitrate (NO3
) to water
bodies. The risk is particularly high in horticultural production systems (HPS), where the use of water
and fertilizers is intensive and concentrated in space and time, and more specifically, in the case of
vegetable crops that have high growth rates, demanding an abundant supply of water and nitrogen
forms. Therefore, to comply with the EU environmental policies aimed at reducing diffuse pollution
in agriculture, there is the need for mitigation practices or strategies acting at different levels such as
the source, the timing and the transport of N. HPS are often well suited for improvement practices,
but efficient and specific tools capable of describing and quantifying N losses for these particular
production systems are required. The most common mitigation strategies found in the literature
relate to crop, irrigation and fertilization management. Nevertheless, only the success of a mitigation
strategy under specific conditions will allow its implementation to be increasingly targeted and more
cost effective. Assessment methods are therefore required to evaluate and to quantify the impact of
mitigation strategies in HPS and to select the most promising ones
Descrição
Review
Palavras-chave
horticulture diffuse pollution N emissions N leaching mitigation strategies fertigation management crop management
Contexto Educativo
Citação
Horticulturae 2017, 3, 25
Editora
MDPI