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Dilier Olivera Viciedo Renato de Mello Prado Carlos A. Martinez Eduardo Habermann Roberto Botelho Ferraz Branco Marisa de Cssia Piccolo Alexander Calero Hurtado Kolima Pea Calzada Luis F. Lata Tenesaca 《Journal of Agronomy and Crop Science》2021,207(1):128-138
Temperature and other abiotic factors, such water and nutrient availability, play an important role for plants in response to the changing environments. At this regard, both warming and drought might affect the nutrient use efficiency (NUE) and growth of Megathyrsus maximus a C4 forage grass of high interest for cattle feeding. However, the nutrient requirements of this species under climate change are unknown. Therefore, we aimed to evaluate the individual and combined effects of two levels of temperature: ambient and elevated temperature (2°C above ambient temperature), and two levels of soil water availability: irrigated plants and non‐irrigated plants on accumulation of leaf nutrients, NUE and biomass production of M. maximus. Temperature control was performed by a temperature free‐air‐controlled enhancement (T‐FACE) system under field conditions. In general, we observed that warming under well‐irrigated conditions increased the leaf accumulation of most nutrients, improving the NUE of N, P, K, Ca, Mg, Cu, Mn and Zn. Plant growth was also enhanced under warming effects, with higher leaf dry mass accumulation and root development. Meanwhile, drought decreased NUE of K, Ca, B and leaf dry biomass, while root growth was stimulated. The combined effects of warming and drought on nutrient accumulation, NUE and plant growth tended to be greater than the individual effects expected from a single factor; thus, warming mitigated the negative impacts of individual drought. In summary, our findings suggest that warming and drought, both as individual and combined factors, will change the nutrient requirements of M. maximus in tropical ecosystems. 相似文献
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de Souza Alonso Tales Arthur da Silva Dalila Lopes de Mello Prado Renato Soares Pedro Luiz Martins Tenesaca Luis Felipe Lata Ferreira Rivanildo Jnior 《Journal of pest science》2022,95(3):1453-1466
Journal of Pest Science - Silicon (Si) has a physical barrier effect on plant tissues, decreasing nematode infection in different crops. Notwithstanding, research on lettuce is lacking, especially... 相似文献
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