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Nitrogen balance and losses through drainage waters in an agricultural watershed of the Po Valley (Italy)(Elsevier, 2008)Sustainable agriculture requires assessments of nitrogen fluxes and monitoring of potential nitrate losses. Watershed studies are particularly valuable to calculate nitrogen balances and quantify the relative importance ...
15N natural abundance technique does not reveal the presence of nitrogen from biological fixation in field grown carob (Ceratonia siliqua L.) trees(International Society for Horticultural Science (ISHS), 2008)The presence in agroecosystems of plants able to develop symbiosis with nitrogen (N2) fixing microorganisms is encouraged as may decrease the need for mineral N fertilizers. Biological N2 fixation is widespread among ...