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Nitrate nitrogen (NO3-N) concentrations of stream water have been observed in the headwater catchments within Gunma Prefecture located in northwest of Metropolitan area Japan. Large differences of NO3...
The effects of light intensity and altered red (R)/far-red (FR) photon flux ratio on nitrate concentration and nitrate reductase (NR) activity in komatsuna (Brassica campestris L. cv. ‘Harumi komatsun...
Spinach plants (Spinacia oleracea L.) were grown in a greenhouse using fertigation based on cumulative solar radiation, and effects on plant growth, nitrate concentration in the leaves, and nitrate ut...
This study confirmed the usefulness of fertigation based on cumulative solar radiation in order to establish a fertigation technique that would decrease the nitrate concentration in spinach leaves (Sp...
Komatsuna Natsurakuten’ was cultivated during three successive crop seasons (early summer, late summer, autumn) in the same soil consisted of andisols in a greenhouse. Four fertilization formulae wer...

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