Effects of phosphorus fertilizers and phosphorus-solubilizing rhizosphere bacteria on soil fertility, phosphorus uptake, growth, and yield of sesame (Sesamum indicum L.) cultivated on alluvial soil in dike

被引：2

作者：

Thuc, Le Vinh ^{[1
]}

Thu, Le Thi My ^{[1
]}

Huu, Tran Ngoc ^{[1
]}

Nghi, Pham Huu ^{[1
]}

Quang, Le Thanh ^{[2
]}

Xuan, Do Thi ^{[2
]}

Xuan, Ly Ngoc Thanh ^{[3
]}

Khuong, Nguyen Quoc ^{[1
,4
]}

机构：

[1] Can Tho Univ, Coll Agr, Fac Crop Sci, Can Tho, Vietnam

[2] Can Tho Univ, Inst Food & Biotechnol, Can Tho, Vietnam

[3] Vietnam Natl Univ, An Giang Univ, Expt & Pract Area, Ho Chi Minh City, Vietnam

[4] Can Tho Univ, Can Tho, Vietnam

来源：

GEOMICROBIOLOGY JOURNAL | 2023年 / 40卷 / 06期

关键词：

Alluvial soil; biological method; P-solubilizing bacteria; P source; rhizosphere microbe; sesame; MANAGEMENT;

D O I：

10.1080/01490451.2023.2204860

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The low phosphorus use efficiency (PUE) and the high P fertilizer cost are reasons why it is necessary to find sustainable phosphorus (P) sources for sesame, in which bacteria are potential candidates. The aim of this study was to determine a level of the applied P fertilizer and P-solubilizing rhizosphere bacteria (PSRB) for the maximum growth and yield of sesame. A two-factor experiment was conducted in a completely randomized block design. The first factor (i) was the P fertilizer rate, including 0%, 50%, 75%, and 100% P of the recommended fertilizer rate (RFR); the other was (ii) the supplementation of the PSRB, including no supplemented bacteria, a single strain of Enterobacter asburiae ASD-56, ASD-15, or ASD-43, and the mixture of all the three strains, with five replications. The results revealed that fertilizing with 100% P of the RFR enhanced means of the plant height (5.4 cm), the number of capsules (4.4 capsules plant(-1)), the total P uptake (34.3 mg P pot(-1)), and the sesame seed yield (16.4 g pot(-1)) in comparison with the case with no P fertilizer. The supplementation of the E. asburiae ASD-56, ASD-15, and ASD-43 improved values of the soluble P in soil, the total P uptake in plants, and the seed yield at 82.6 mg P kg(-1), 73.1 mg P pot(-1), and 15.2 g pot(-1), respectively, compared with 72.2 mg P kg(-1), 45.5 mg P pot(-1), and 10.6 g pot(-1) in treatment with no supplemented bacteria. Individually or aggregately applying the three E. asburiae ASD-56, ASD-15, and ASD-43 strains not only reduced the average amount of the P fertilizer used by 25-50% P of the RFR but also increased the P uptake in plants by 8.50-36.9% and the average sesame seed yield by 2.94-58.7%, in comparison with those in the treatment fertilized with 100% P of the RFR. The mixture of the PSRB contributed to reducing 50% of the RFR, and increasing the yield by 43.4%.

引用

页码：527 / 537

页数：11

共 33 条

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