Plant Growth-Promoting Rhizobacteria: Effects on Yield and Nutritive Value of ‘Russell’ Bermudagrass and ‘KY 31’ Tall Fescue

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 21-21
Author(s):  
Madison Cole ◽  
S Leanne L Dillard
Keyword(s):  
Plant Growth ◽  
Tall Fescue ◽  
Nutritive Value ◽  
Plant Growth Promoting Rhizobacteria ◽  
Single Strain ◽  
Randomized Design ◽  
Plant Growth Promoting ◽  
Nirs Data ◽  
Growth Promoting ◽  
N Fertility

Abstract Commercial N fertilizer are labor intensive and expensive for many forage producers. Alternative N fertility options are necessary for the long-term sustainability of forage systems. A 2-yr experiment evaluating plant growth-promoting rhizobacteria (PGPR) as an alternative N source for ‘Russell’ bermudagrass (C. dactylon) and ‘KY 31’ tall fescue (L. arundinaceum) was conducted in Alabama. Fourteen, 3-m2 plots were treated with full N (56 kg/ha) and ½ N (28 kg/ha), Accomplish LM (AMS), AMS + ½ N, DH44, Blend 20, and a control. DH44 is a single strain of Paenibacillus sonchi, while Blend 20 contains 2 strains of Bacillus pumilus and 1 strain of B. spaericus. Forage samples were taken every 4 weeks with a 0.1-m2 quadrat then analyzed for NDF, ADF, CP, and yield using NIRS. Data were analyzed using Proc GLIMMIX of SAS 9.4 (SAS Inst., Cary, NC) as a completely randomized design (n = 2). For both forages, full N had greater (P < 0.0139) yield when compared to the control (tall fescue: 8,295 vs. 7,353 kg/ha; bermudagrass: 9,329 vs. 8,109 kg/ha). There were no differences (P ≥ 0.05) in NDF concentration for either forage. Full and ½ N had greater CP than AMS in bermudagrass (11.5, 11.4%; P ≤ 0.0490). Blend 20 treated bermudagrass had greater ADF than full and ½ N (32.7, 30.7, and 30.9%, respectively; P < 0.0313). Blend 20 treated tall fescue had greater ADF compared to AMS + N and DH44 (35.8, 12.1, and 33.9%, respectively; P < 0.0227). Full N tall fescue had greater CP) compared to AMS (12.1, AMS CP %, respectively; P < 0.0082). DH44 had greater CP compared to AMS and Blend 20 (11.9, 11.0, and 11.0%, respectively; P < 0.0423). For both forages, PGPR treated plots produced yields and maintained forage nutritive value not different than the commercial fertilizer.

scholarly journals Comparative Effects of Bio-Wastes in Combination with Plant Growth-Promoting Bacteria on Growth and Productivity of Okra

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2065
Author(s):  
Hammad Anwar ◽  
Xiukang Wang ◽  
Azhar Hussain ◽  
Muhammad Rafay ◽  
Maqshoof Ahmad ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Health ◽  
Organic Amendments ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Plant Growth Promoting Bacteria ◽  
Randomized Design ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting rhizobacteria with multiple growth-promoting traits play a significant role in soil to improve soil health, crop growth and yield. Recent research studies have focused on the integration of organic amendments with plant growth-promoting rhizobacteria (PGPR) to enhance soil fertility and reduce the hazardous effects of chemical fertilizers. This study aims to evaluate the integrated application of biochar, compost, fruit and vegetable waste, and Bacillus subtilis (SMBL 1) to soil in sole application and in combined form. The study comprises eight treatments—four treatments without inoculation and four treatments with SMBL 1 inoculation in a completely randomized design (CRD), under factorial settings with four replications. The results indicate that the integrated treatments significantly improved okra growth and yield compared with sole applications. The integration of SMBL 1 with biochar showed significant improvements in plant height, root length, leaf chlorophyll a and b, leaf relative water content, fruit weight, diameter and length by 29, 29, 50, 53.3, 4.3, 44.7 and 40.4%, respectively, compared with control. Similarly, fruit N, P and K contents were improved by 33, 52.7 and 25.6% and Fe and Zn in shoot were 37.1 and 35.6%, respectively, compared with control. The results of this study reveal that the integration of SMBL 1 with organic amendments is an effective approach to the sustainable production of okra.

scholarly journals Impacts of Plant Growth-Promoting Rhizobacteria on Tropical Forage Grass in Brazil

2020 ◽  
Vol 8 (1) ◽  
pp. 342
Author(s):  
Monyck Jeane dos Santos Lopes ◽  
Moacyr Bernardino Dias-Filho ◽  
Thomaz Henrique dos Reis Castro ◽  
Edilson Ferreira da Silva ◽  
Marcela Cristiane Ferreira Rêgo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Biomass Production ◽  
Nutritive Value ◽  
Plant Growth Promoting Rhizobacteria ◽  
Soluble Carbohydrates ◽  
Production Plant ◽  
Pasture Production ◽  
Plant Growth Promoting ◽  
Growth Promoting

The aim of this study was to evaluate the effects of plant growth-promoting rhizobacteria effects on anatomical characteristics and nutritional value of Brachiaria (Syn. Urochloa) brizantha cv. BRS Piatã. The experimental design applied was completely randomized design  with three treatments: (1) non-inoculated unfertilized-control plants (C-), (2) non-inoculated fertilized-control plants (C+) and (3) B. brizantha inoculated with Pseudomonas fluorescens (BRM-32111) and Burkholderia pyrrocinia (BRM-32113). The following parameters were evaluated at 35 days after seedling emergence: biomass production, plant height, net photosynthesis (A), water-use efficiency (WUE), chlorophyll (SPAD), anatomical and nutritional. The rhizobacteria modified the anatomy of the leaf, culm and roots of B. brizantha. They also increased the chlorophyll content, A, WUE, total soluble carbohydrates, starch and crude protein contents, N, P, Mg and Fe concentrations, plant height, root area and biomass production. Therefore, we conclude that co-inoculation with P. fluorescens (BRM-32111) and B. pyrrocinia (BRM-32113) modified the anatomy and biochemistry of B. brizantha, promoting growth and nutrient accumulation. Therefore, these findings set up the basis for additional exploratory studies, using these rhizobacteria as biotechnological innovation with potential of use as biofertilizer in B. brizantha, aiming higher productivity and nutritive value in a more eco-friendly and sustainable pasture production system.

scholarly journals 146 Evaluation of plant growth promoting rhizobacteria on stockpiled bermudagrass

2019 ◽  
Vol 97 (Supplement_1) ◽  
pp. 36-37
Author(s):  
Megan E Griffin ◽  
Mary K Mullenix ◽  
D W Held ◽  
Russ B Muntifering ◽  
Sandra L Dillard
Keyword(s):  
Plant Growth ◽  
Nutritive Value ◽  
Plant Growth Promoting Rhizobacteria ◽  
N Fertilization ◽  
Alternative Form ◽  
Forage Production ◽  
Commercial Fertilizer ◽  
Harvest Dates ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract Plant growth-promoting rhizobacteria (PGPR) are non-pathogenic, soil-inhabiting, beneficial bacteria that colonize the roots of plants. Some PGPR strains are reported to increase nutrient uptake and fix atmospheric N, which suggests that biofertilization with PGPR may provide an alternative to N fertilization for forage production. In mid-August 2017, a study was initiated to evaluate PGPR as an alternative form of N fertilization for fall-stockpiled bermudagrass. Eighteen 1-m2plots were mowed to a 2.5-cm stubble height prior to stockpiling. Two strains of PGPR (Blend 20 and DH44) were selected for evaluation based on performance in greenhouse trials. Treatments included: control, fertilizer, DH44, DH44+fertilizer, Blend 20, and Blend 20+fertilizer (n = 3).Two applications of PGPR were applied at the beginning of the stockpiling season and 30 d later. Ammonium sulfate was applied at 56 kg/ha during the first PGPR application. Plots were clipped to a height of 2.5 cm in mid-November, December, and January to determine yield and nutritive value. Data were analyzed using PROC MIXED (SAS 9.4) as a completely randomized design.Yield was greater (P ≤ 0.007) for Blend 20+fertilizer, DH44, and Blend 20 (695, 673, and 664 kg DM/ha, respectively) than the control (598 kg DM/ha). Forage DM yield differed among harvest dates, with Blend 20+Fertilizer having the highest yield in January (835 kg DM/ha). Blend 20+fertilizer, control, and fertilizer treatments had the greatest effect on CP concentration (9.1, 9.5, and 10.1%, respectively). Concentrations of NDF and ADF were greatest (P ≤ 0.01) for Blend 20, Blend 20+fertilizer, DH44, and fertilizer. Percentage IVTD decreased with the later harvests (46.1, 33.8, and 39.0% in November, December, and January, respectively); however, CP was unchanged across all harvests (P3 0.12). Overall, PGPR increased DM yield of stockpiled bermudagrass while maintaining forage nutritive value similar to commercial fertilizer.

scholarly journals Effectiveness of Mycorrhiza, Plant Growth Promoting Rhizobacteria and Inorganic Fertilizer on Chlorophyll Content in Glycine max (L.) cv. Detam-4 Prida

2021 ◽  
Vol 226 ◽  
pp. 00031
Author(s):  
Muhammad Muhammad ◽  
Umi Isnatin ◽  
Peeyush Soni ◽  
Praptiningsih Gamawati Adinurani
Keyword(s):  
Plant Growth ◽  
Chlorophyll Content ◽  
Plant Growth Promoting Rhizobacteria ◽  
Nitrogen And Phosphorus ◽  
Randomized Design ◽  
Effective Combination ◽  
Plant Growth Promoting ◽  
Glycine Max L ◽  
Growth Promoting ◽  
Completely Randomized Design

This study aimed to find an effective combination of mycorrhiza, PGPR (Plant Growth Promoting Rhizobacteria), and inorganic fertilizers. Whereas the specific purpose was observed in effective mycorrhiza to increased chlorophyll content. This study used a completely randomized design (CRD) with three factors: the 1st factor is mycorrhiza application, the 2nd factor is PGPR and the 3rd factor is the application of nitrogen and phosphorus fertilizers. The data were analyzed with Analysis of Variance to determine the effect of the treatment being tried. Continued with the Least Significance Different test at a 95 % confidence level. The results indicated that the most effective application in increasing total chlorophyll content was (i) the ‟Commercial Mycorrhiza” without being combined with PGPR and fertilizer (TP.TR.MP:80 g mL–1). (ii) ‟Brawijaya Mycorrhiza” is combined with PGPR without fertilizer (TP.R.MB: 83 g mL–1). (iii) ‟Unida Mycorrhiza” without combined with PGPR and without fertilizer (TP.TR.MU: 80 g mL–1).

scholarly journals Biocontrol of Cucumber Diseases in the Field by Plant Growth-Promoting Rhizobacteria With and Without Methyl Bromide Fumigation

Plant Disease ◽  
2000 ◽  
Vol 84 (10) ◽  
pp. 1073-1075 ◽  
Author(s):  
G. S. Raupach ◽  
J. W. Kloepper
Keyword(s):  
Plant Growth ◽  
Methyl Bromide ◽  
Leaf Spot ◽  
Plant Growth Promoting Rhizobacteria ◽  
Angular Leaf Spot ◽  
Systemic Resistance ◽  
Single Strain ◽  
Naturally Occurring ◽  
Plant Growth Promoting ◽  
Growth Promoting

Field trials were conducted in 1996 and 1997 to determine the effect of plant growth-promoting rhizobacteria (PGPR) strains, which previously were found to induce systemic resistance in cucumber, on cucumber plant growth and on naturally occurring cucumber diseases with and without methyl bromide fumigation. Seven PGPR seed treatments included single-strain treatments and mixtures of Bacillus pumilus strain INR7, Curtobacterium flaccumfaciens strain ME1, and Bacillus subtilis strain GB03. In both years, in the absence of methyl bromide, all seven PGPR treatments significantly promoted plant growth, compared to the non-treated control, while with methyl bromide fumigation, only 3 and 1 of the same PGPR treatments promoted growth significantly in 1996 and 1997, respectively. In 1996, main runner length of plants in all seven PGPR treatments without fumigation was statistically equivalent to the main runner length of the nontreated control with methyl bromide fumigation. Naturally occurring foliar diseases were angular leaf spot, caused by Pseudomonas syringae pv. lachrymans in 1996, and a mixed infestation of angular leaf spot and anthracnose, caused by Colletotrichum orbiculare in 1997. In both years, all PGPR treatments significantly reduced severity of foliar disease, compared to the nontreated control, with and without methyl bromide. Mixtures of PGPR strains showed a higher level of disease protection in both years with and without methyl bromide. The results indicate that attempts to develop PGPR-mediated induced systemic resistance into components of vegetable integrated pest management should not be negatively impacted by the planned withdraw of MeBr from standard vegetable production and that PGPR may help compensate for reduced plant growth often seen without methyl bromide fumigation.

scholarly journals 68 Effects of Plant Growth-Promoting Rhizobacteria on Fall-Stockpiled Bermudagrass

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 31-32
Author(s):  
Madison Cole ◽  
Megan E Griffin ◽  
Sandra L Dillard ◽  
Mary K Mullenix ◽  
Russ B Muntifering ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nutritive Value ◽  
Plant Growth Promoting Rhizobacteria ◽  
N Fertilizer ◽  
Alternative Form ◽  
Forage Production ◽  
Synthetic Fertilizer ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract Forage production practices have been greatly affected by the increasing cost of N fertilization. Therefore, supplemental and alternative N sources are needed to ensure the economic viability of these systems. A 2-yr, small plot study was designed to evaluate plant growth-promoting rhizobacteria (PGPR) as an alternative form of N fertilizer for fall-stockpiled bermudagrass (Cynodon dactylon). Eighteen 1-m2 ‘Coastal’ bermudagrass plots were treated with a synthetic N fertilizer, DH44 (PGPR strain), DH44+fertilizer, Blend 20 (PGPR blend), Blend 20+fertilizer, and a control, then stockpiled through the fall. Two PGPR applications were applied in late-August and again 30 d later. Fertilizer and PGPR+fertilizer plots received (NH4)2SO4, at a rate of 56 kg N/ha. One-third of each plot was clipped to 2.5 cm in November, December, and January, respectively. Forage DM yield, CP, NDF, ADF, and ADL were determined via wet chemistry at the Auburn University Ruminant Nutrition Laboratory (Auburn, AL). Data were analyzed using PROC MIXED (SAS 9.4, SAS Inst., Cary, NC) as a completely randomized design. Yield was greatest (P ≤ 0.0318) for Blend 20+fertilizer, but it was not different (P = 0.2552) from that of the synthetic fertilizer (1,914 kg ha-1, 1,768 kg ha-1, respectively). Concentration of CP was least (P ≤ 0.0437) for DH44 and Blend 20 treatments (90 g kg-1 and 92 g kg-1, respectively). Concentrations of NDF for the control were different (P ≤ 0.0045) for all treatments except synthetic fertilizer (P = 0.1092). Concentrations of ADF were not different (P ≥ 0.1613) excluding the control (P ≤ 0.0525; 342.8 g kg-1and 358.0 g kg-1, respectively). In vitro true digestibility (IVTD) was not different (P = 0.0947) among all treatments (463.1 g kg-1). All yield and nutritive value parameters were greater (P ≤ 0.0246) in Year 2. These results indicate that PGPR is a viable option for biofertilization of fall-stockpiled bermudagrass; however, further investigation into the effects of PGPR inoculants at a field scale are needed.

scholarly journals Stomata dan Trikoma Kultivar Kedelai Anjasmoro selama pemupukan Nanosilika dan Plant Growth Promoting Rhizobacteria

Vegetalika ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 343
Author(s):  
Sri Suryanti ◽  
Arif Umami
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Nano Silica ◽  
Randomized Design ◽  
Silica Concentration ◽  
The Status ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Completely Randomized Design ◽  
Soybean Plants

Soybean is a very important crop commodity in Indonesia. Increasing soybean production on dryland as cultivation land need to be carried out. Dryland have issues with either of nutrient and water availability which is not supportable for plant growth. Therefore, the application of nano-silica and plant growth promoting rhizobacteria (PGPR) are expected to increase nutrient absorption, synthesis of plant growth hormone and increase in plant resistance to drought stress. The growth of drought-resistant plants is able to be showed through the status of stomata and trichomes on leaves. So that, this study aimed to determine the stomata and trichome performance of soybean plants of Anjasmoro cultivar using nano-silica and PGPR as fertilizers. The study design used a completely randomized design with 2 factors with three replication. The first factor was nano silica concentration i.e. 0, 100 and 200 ppm. The second factor was PGPR concentration i.e. 0, 5, 10, and 15%. Results showed that the nanosilica and PGPR applications had no significant effect on stomata and trichome status of Anjasmoro cultivar except for stomatal aperture and the ratio of the size of the stomata openings. A positive correlation has been found in the study between stomata openings and soybean yields.

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