This is a general drawback for organic crops cultivation (Lester & Saftner, 2011; Seufert, Ramankutty, & Foley, 2012), being exacerbated in this case by the relativelylowsoil average temperatures occurring in this geographic area at the beginning of spring.
With a view to tackle this limitation, laboratoryand field experimental trials have been undertaken in the last few years by comparing the performance of several organic fertilisers in terms of nitrogen mineralisation rates, in order to optimise the release of plant available mineral nitrogen from organic sources (Kelderer et al., 2008).
This is a general drawback for organic crops cultivation (Lester & Saftner, 2011; Seufert, Ramankutty, & Foley, 2012), being exacerbated in this case by the relativelylowsoil average temperatures occurring in this geographic area at the beginning of spring. With a view to tackle this limitation, laboratoryand field experimental trials have been undertaken in the last few years by comparing the performance of several organic fertilisers in terms of nitrogen mineralisation rates, in order to optimise the release of plant available mineral nitrogen from organic sources (Kelderer et al., 2008).
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