Das Mohapatra Monalisha, Sahoo Ranjan Kumar, Tuteja Narendra
Department of Biotechnology, Centurion University of Technology and Management, Bhubaneswar, Odisha 752050 India.
Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, 110067 India.
Physiol Mol Biol Plants. 2024 Jul;30(7):1099-1111. doi: 10.1007/s12298-024-01478-x. Epub 2024 Jul 1.
For agricultural safety and sustainability, instead of synthetic fertilizers the eco-friendly and inexpensive biological applications include members of plant-growth-promoting rhizobacteria (PGPR) genera, spp. will be an excellent alternative option to bioinoculants as they do not threaten the soil biota. The effect of phosphate solubilizing bacteria (PSB) on groundnuts' growth and yield parameters was studied under field conditions. The strain was combined with a single super phosphate and tested in different combinations for yield improvement. Integration of bacterial strain with P fertilizer gave significantly higher pod yield ranging from 7.36 to 13.18% compared to plots where sole inorganic fertilizers were applied. Similarly, the combined application of PSB and inorganic P fertilizer significantly influenced plant height and number of branches compared to sole. However, a higher influence of phosphorous application (both PSB and P fertilizer) observed both nodule dry weight and number of nodules. Combined with single super phosphate (100% P) topped in providing better yield attributing characters (pod yield, haulm yield, biomass yield, 1000 kernel weight, and shelling percentage) in groundnut. Higher oil content was also recorded with plants treated with combined with single super phosphate (SSP) (100% P). Nutrients like nitrogen (N), phosphorous (P), and potassium (K) concentrations were positively influenced in shoot and kernel by combined application. In contrast, Ca, Mg, and S were found to be least influenced by variations of Phosphorous. Plants treated with and lower doses of SSP (75% P) recorded higher shoot and kernel P. We found that co-inoculation with PSB and SSP could be an auspicious substitute for utilizing P fertilizer in enhancing yield and protecting nutrient concentrations in groundnut cultivation. Therefore, PSB can be a good substitute for bio-fertilizers to promote agricultural sustainability.
为了实现农业安全与可持续发展，对于生态友好且成本低廉的生物应用而言，促进植物生长的根际细菌（PGPR）属的成员，而非合成肥料，将是生物接种剂的绝佳替代选择，因为它们不会对土壤生物群构成威胁。在田间条件下研究了溶磷细菌（PSB）对花生生长和产量参数的影响。该菌株与过磷酸钙单剂混合，并以不同组合进行产量提升测试。与仅施用无机肥料的地块相比，将该细菌菌株与磷肥整合使用可使荚果产量显著提高7.36%至13.18%。同样，与单独施用相比，PSB和无机磷肥的联合施用对株高和分枝数有显著影响。然而，观察到施磷（PSB和磷肥）对根瘤干重和根瘤数有更大影响。与过磷酸钙单剂（100%磷）混合使用在提供更好的产量相关性状（荚果产量、茎蔓产量、生物量产量、百仁重和出仁率）方面表现突出。在与过磷酸钙单剂（SSP）（100%磷）处理的植株中也记录到了更高的含油量。联合施用对地上部和果仁中的氮（N）、磷（P）和钾（K）等养分浓度有积极影响。相比之下，钙、镁和硫受磷变化的影响最小。用和较低剂量的SSP（75%磷）处理的植株地上部和果仁中的磷含量较高。我们发现，在花生种植中，将PSB与SSP共同接种可成为利用磷肥提高产量和保护养分浓度的有利替代方法。因此，PSB可以成为促进农业可持续发展的生物肥料的良好替代品。
