Accumulation and distribution characteristics of biomass and nitrogen in bitter gourd (Momordica charantia L.) under different fertilization strategies.
- Autores: Baige Zhang, Mingzhu Li, Qiang Li, Jian Cao, Changyuan Zhang, Fusuo Zhang, Zhao Song, Xinping Chen
- Localización: Journal of the science of food and agriculture, ISSN 0022-5142, Vol. 98, Nº 7, 2018, págs. 2681-2688
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
The elemental uptake and allocation patterns of crops create insight for nutrient management. Two-year field experiments were conducted to determine the growth and nitrogen (N) uptake patterns of bitter gourd and to evaluate different N management strategies. Two N practices during the nursery stage, namely the conventional fertilizer method (Scon) and the controlled-release fertilizer management method (Scrf), combined with three N management strategies after transplanting, namely zero N fertilizer application (Nno), the conventional strategy (Ncon) and the systematic N management strategy (Nopt), were assessed.; Results: Averaged over two years, the Scrf-Nopt treatment performed best, producing 33.1 t ha-1 fruit yield with 310 kg N ha-1 , indicating that the yield was 22.6% greater by using 18.8% less fertilizer N than in the Scon-Ncon treatment. The Scrf-Nopt treatment facilitated plant growth by accumulating 20.0% more total dry weight and prioritized its allocation to productive organs (57.2%), while the Scon-Ncon strategy was biased toward leaves (56.3%) over fruits (43.8%). Nitrogen uptake and distribution closely followed the pattern of biomass.; Conclusion: The Scrf-Nopt fertilization strategy coordinated the important role that N plays in total accumulation and well proportion of biomass and N in bitter gourd developmental processes. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry.
