Nitrogen Requirements for Flue‐Cured Tobacco
作者： Rosa Marchetti , Fabio Castelli , Renato Contillo
关键词: Northern italy 、 Fertilizer 、 Curing of tobacco 、 Nicotiana tabacum 、 Agronomy 、 Crop growth 、 Nitrogen 、 Water quality 、 Mathematics 、 Loam
摘要: Fertilizer N excesses may have negative effects on both crop and water quality. To reduce the risk of it is essential to accurately define fertilizer rates. The estimate most suitable rate complicated by fact that a certain amount taken up during growth season supplied soil. aim this work was can become available for plant uptake season. five rates (0,20,40,60, 80 kg ha -1 ) production traits flue-cured tobacco (Nicotiana tabacum L.) cv. K326, selected items an balance applied soil-plant system were studied loam soil, in 1998 1999, at Bovolone (Verona, northern Italy). positively significantly influenced cured-leaf yields only whereas time harvest increased linearly increasing rates, years (0.25 d average every further N). indicated remarkable reduction soil organic stock increase inorganic levels throughout period. As these changes proportional rate, occurrence positive priming effect hypothesized. formulation recommendations farmers should take into account existence phenomena.
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