Shohag Md Jahidul Islam, Máximo Salgado Elena, Curtis Gluck Marina, Liu Guodong
Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA.
Plants (Basel). 2024 Dec 1;13(23):3384. doi: 10.3390/plants13233384.
The snap bean ( L.) is highly sensitive to both phosphorus (P) deficiency and hypoxic stress, which together can significantly hinder plant growth, nutrient uptake, and yield; however, limited information exists on the effect of P and oxygen (O) fertilization to alleviate these stresses and enhance yield. A two-year field experiment assessed the effects of P and O fertilization on plant growth, pod yield, and P uptake in acidic sandy soil. Using a randomized complete block design with four replications, we tested five P rates (0, 45, 90, 135, and 179 kg ha of phosphorus pentoxide, PO) in the form of triple superphosphate (TSP) along with two rates (0 and 45 kg ha) of solid O fertilizer as calcium peroxide (CaO). Phosphorus and O fertilizers improved plant growth and pod yield, with the highest yield from the combination of 135 kg ha PO and 45 kg ha CaO. Pearson correlation analysis indicated strong associations between plant growth, pod yield, and nutrient accumulation. Principal component analysis (PCA) highlighted notable seasonal differences in snap bean and soil characteristics. This study provides essential insights into the use of O fertilizers as a cost-effective approach to mitigate hypoxia, enhance P use efficiency, and improve yield in snap bean. Our findings may inspire the development of sustainable nutrient protocols for high-quality snap bean production and serve as a foundation for similar applications in other crops.
菜豆（L.）对磷（P）缺乏和低氧胁迫都高度敏感，这两种情况共同作用会显著阻碍植株生长、养分吸收和产量；然而，关于施磷和施氧（O）以缓解这些胁迫并提高产量的效果，现有信息有限。一项为期两年的田间试验评估了在酸性沙质土壤中施磷和施氧对植株生长、豆荚产量和磷吸收的影响。采用随机完全区组设计，重复四次，我们以三过磷酸钙（TSP）的形式测试了五种磷施用量（五氧化二磷，P₂O₅，0、45、90、135和179千克·公顷）以及两种固体氧肥料施用量（0和45千克·公顷）的过氧化钙（CaO）。磷和氧肥料提高了植株生长和豆荚产量，135千克·公顷P₂O₅和45千克·公顷CaO组合的产量最高。Pearson相关性分析表明植株生长、豆荚产量和养分积累之间存在强关联。主成分分析（PCA）突出了菜豆和土壤特性的显著季节性差异。本研究为使用氧肥料作为一种经济有效的方法来缓解低氧、提高磷利用效率和提高菜豆产量提供了重要见解。我们的研究结果可能会激发制定可持续养分方案以实现高品质菜豆生产，并为其他作物的类似应用奠定基础。
