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Effect of Seed Bio-priming with Trichoderma viride Strain BHU-2953 for Enhancing Soil Phosphorus Solubilization and Uptake in Soybean ( Glycine max )
Journal of Soil Science and Plant Nutrition ( IF 3.4 ) Pub Date : 2021-01-20 , DOI: 10.1007/s42729-021-00420-4
Subhadip Paul , Amitava Rakshit

The main objective of our study was to evaluate the effectiveness of Trichoderma viride BHU-2953 as a single inoculant during seed-priming to enhance phosphorus (P) uptake in soybean. A pot experiment was conducted, taking six treatments, in a completely randomized block design to assess the P uptake, root length, apparent phosphorus recovery (APR), rhizospheric phosphatase activity, pH, soil-P status, dehydrogenase activity, and fungal colony-forming unit (CFU g−1) in three different soybean growth stages through seed-priming with T. viride along with graded fertilizer P-doses. Significantly (P < 0.05) higher soil phosphatase activity, dehydrogenase activity, CFU of T. viride, and P-content in soybean vegetative parts were observed in bio-primed treatments as compared to control and RDF (full recommended dose of P-fertilizer without seed-priming), while seed-P (%), APR (%), and root lengths of RDF were found significantly (P < 0.05) lower than bio-primed soybeans with 90% RDF but were at par with 80% RDF. Higher positive correlations between CFU and acid phosphatase (R2 = 0.89, 0.9, and 0.89; P < 0.05) and between CFU and alkaline phosphatase activities (R2 = 0.98, 0.96, and 0.97; P < 0.05) at 30, 50, and 75 DAS indicate that T. viride mediated higher soil phosphatase activities. Higher P-recoveries of bio-primed soybeans, received 90% and 80% RDF, were achieved mainly due to soil applied-P solubilization through enhanced acid phosphatase activities along with better soil exploration by plant roots. Thus, seed-priming with T. viride BHU-2953 can reduce up to 20% of the recommended P-dose in soybeans.



中文翻译:

绿色木霉菌菌株BHU-2953的种子生物引发对提高大豆中土壤磷吸收和吸收的影响

我们研究的主要目的是评估在种子引发期间增加大豆中磷(P)吸收的木霉木霉BHU-2953作为单一接种剂的有效性。在完全随机的区组设计中进行了六种处理的盆栽试验,以评估P吸收,根长,表观磷回收率(APR),根际磷酸酶活性,pH,土壤P状态,脱氢酶活性和真菌菌落-在三个不同的大豆生长阶段中,通过用T. viride和分级肥料P剂量对种子进行种子灌浆,形成单位(CFU g -1)。T. viride的 土壤磷酸酶活性,脱氢酶活性和CFU显着(P <0.05)与对照和RDF(建议全剂量的P肥料,无种子灌浆)相比,在生物灌浆处理中观察到大豆营养部位的P含量,而种子P(%),APR(%)和发现RDF的根长显着(P  <0.05)比具有90%RDF的生物引发大豆低,但与80%RDF相当。CFU与酸性磷酸酶之间的正相关性较高(R 2  = 0.89、0.9和0.89;P  <0.05),CFU与碱性磷酸酶活性之间的正相关性较高(R 2  = 0.98、0.96和0.97;P  <0.05)在30、50,和75 DAS表示T. viride介导的较高的土壤磷酸酶活性。生物引发大豆的P回收率较高,分别达到RDF的90%和80%,这主要归因于通过提高酸性磷酸酶的活性而土壤施用的P增溶作用以及植物根部对土壤的更好勘探。因此,用T. viride BHU-2953进行种子引发可减少大豆中推荐的P剂量的20%。

更新日期:2021-01-21
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