? 2021, Indian journals. All rights reserved.Phosphorus (P) is the most essential element for energy currency (ATP to ADP) in plant system. Phosphorus fixation is the main problem in red soil due to formation of iron phosphate (Fe-P) and aluminium phosphate (Al-P) resulting low P availability. Technological intervention is needed for utilizing indigenous rock phosphate (RP) as P-fertilizer. Considering this background present investigation was undertaken using phosphorus solubilizers namely, PSB1 (Burkholdaria cariabensis) and PSB2 (Burkholdaria cepacia), RP sources (Udaipur and Purulia) and organic sources farmyard manure (FYM) and vermicompost (VC) in red and alluvial soils for increasing P availability. Changes in soil reaction, available P, solubilizing power of P (Ca-P and Fe-P) and acid and alkaline phosphatase activities were recorded under laboratory incubation experiment of 60 days. Lowest pH (6.44) was observed at 60 days after incubation (DAI) in alluvial soil, whereas lowest pH value (4.29) was recorded at 60 DAI in red soil. Effect of FYM on alkaline phosphatase activity was higher as compared to VC applied treatments under both the soils. The activity of alkaline phosphatase activity at different days of interval followed the order of 15 DAI 30 DAI 45 DAI 60 DAI in both the soils. The maximum solubilized P was recorded at 60 DAI in red soil (18.8 mg P kg-1 ) and alluvial soil (23.6 mg P kg-1 ). The FYM treated soils recorded more solubilized P over combined effect of VC and RP treated soil. Co-inoculation of PSB1 and PSB2 resulted better P solubilization as compared to single application. Co-inoculation of PSBs with FYM and VC resulted in higher soluble P in both the soils. The P solubilization was higher from Ca-P as compared to Fe-P irrespective of soil types. Co-inoculation of PSBs with FYM or VC could be a technological intervention for supplement use of RP as P-fertilizer.
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机译：?2021 年，印度期刊。保留所有权利。磷 （P） 是植物系统中能量货币（ATP 到 ADP）的最基本元素。由于磷酸铁（Fe-P）和磷酸铝（Al-P）的形成导致磷有效性低，固磷是红壤的主要问题。利用本地磷矿（RP）作为磷肥需要技术干预。考虑到这一背景，在红色和冲积土壤中使用磷增溶剂，即PSB1（洋葱伯克霍尔达里亚）和PSB2（洋葱伯克霍尔达里亚），RP来源（乌代布尔和普鲁利亚）和有机来源[农家肥（FYM）和蚯蚓粪（VC）]进行研究，以增加磷的可用性。在实验室培养实验60 d下，记录了土壤反应、速效磷、P（Ca-P和Fe-P）的溶解力以及酸碱性磷酸酶活性的变化。在冲积土中，在孵育后60 d（DAI）观察到最低pH值（6.44），而在红壤中，在60 DAI时观察到最低pH值（4.29）。在两种土壤下，FYM对碱性磷酸酶活性的影响均高于VC处理。碱性磷酸酶活性在不同天数的间隔时间依次为15 DAI<30 DAI<45 DAI<60 DAI。在60 DAI时，红壤（18.8 mg P kg-1）和冲积土（23.6 mg P kg-1）的溶解磷最大。FYM处理的土壤中溶解的磷含量高于VC和RP处理土壤的综合效应。与单次施用相比，PSB1 和 PSB2 共接种可产生更好的 P 溶解性。PSBs与FYM和VC共接种后，两种土壤的可溶性磷含量均较高。与Fe-P相比，无论土壤类型如何，Ca-P的P溶解度都高于Fe-P。PSBs与FYM或VC共接种可能是RP作为P肥的补充使用的技术干预。
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