Current agricultural practices depend heavily on chemical inputs, and their overuse seriously contaminates the soil health. Microbial bioinoculants are emerging as an effective greener replacement for chemical fertilizers. These bioinoculants are beneficial for plant growth and also diminishes pathogenicity. Here, we explored three microbial inoculants along with commonly used fertilizers, i.e., Superphosphate (S_P) and Urea (U_R) for their effectiveness on Zinnia elegans Jacq., that has considerable demand in the floral market. The experiment was conducted in three parts with recommended doses of fertilizers, low (half) doses, and high (double) doses in combination with Glomus mosseae (G_M), Acaulospora laevis (A_L) and Pseudomonas fluorescens (P_F), as microbial inoculants. The consortium of microbial inoculants (G_M+A_L+P_F) fed with the low dose of S_P and U_R gave the best results for growth parameters (Shoot and Root Length, Shoot and Root Weight), Floral traits (floral head number and diameter), mycorrhization pattern and for other physiological attributes (shoot phosphorus content, root phosphorus content, acidic phosphatase, alkaline phosphatase). Overall, the study establishes that microbial bioinoculants is a potential fertilizer supplement at the recommended dose supports optimum
Z. elegans growth.

中文翻译：

---

过磷酸钙，尿素和生物菌剂对百日草的影响

当前的农业实践严重依赖化学物质的投入，过度使用这些化学物质会严重污染土壤健康。微生物生物灭活剂正在作为一种有效的绿色替代化学肥料而出现。这些生物抑制剂对植物生长有益，也可减少致病性。在这里，我们探讨了三种微生物接种剂以及常用的肥料，即过磷酸钙（S _P）和尿素（U _R）对百日草的效用，而百日草对花卉市场有很大的需求。实验分三部分进行，分别与推荐的肥料剂量，低（半）剂量和高（双）剂量以及Glomus mosseae（G _M）配合使用，Acaulospora蟾（A_大号）和荧光假单胞菌（P _˚F），作为微生物接种。低剂量的S _P和U _R喂养的微生物接种剂（G _M + A _L + P _F）组合对于生长参数（射根和根长，枝和根重），花性状（花头）提供了最佳结果数量和直径），菌根形态以及其他生理属性（包括磷含量，根磷含量，酸性磷酸酶，碱性磷酸酶）。总体而言，该研究确定了微生物生物菌剂在建议的剂量下是潜在的肥料补品，可支持最佳
线虫的生长。