The nematicidal effect of some bacterial biofertilizers on Meloidogyne incognita in sandy soil

El-Hadad, M.E; Mustafa, M.I; Selim, Shawky; El-Tayeb, T. S.; Mahgoob, A. E. A.; Aziz, Norhan H. Abdel

doi:10.1590/s1517-83822011000100014

Cited by 55 publications

(29 citation statements)

References 16 publications

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“…These products significantly decreased the invasion of J 2 s in the rhizosphere and in the nematode's reproduction in roots (P≤0.05). Also, El-Hadad et al (2011) found positive results regarding the suppression capability of several biofertilizers containing phosphate-solubilizing bacteria, nitrogen-fixing bacteria, and potassium-solubilizing bacteria on rhizosphere-infested M. incognita in greenhouse conditions. To support such finding, the pot experiment conducted in the current study indicated that reproduction of the nematode significantly reduced, in terms of egg masses and RF (P≤0.05), when soil was amended using phosphate, biofertilizer, potassium, Cluster analysis has been carried out using complete linkage method and Euclidean similarity matrix.…”

Section: Discussionmentioning

confidence: 92%

Root-knot nematode, Meloidogyne javanica, in response to soil fertilization

Hemmati¹,

Saeedizadeh

2020

Braz. J. Biol.

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Root-knot nematodes (RKNs) (Meloidogyne spp.) are well known disease problem causing major losses in vegetable crops. Although, chemical nematicides have been used as one of the primary means for controlling RKNs, reliance on these nematicides is associated with heavy costs and negative effects on human health and environment. In this research, the suppressing potential of 6 Iranian commercial fertilizers on RKNs was investigated in laboratory and greenhouse conditions as an alternative to reduce the use of chemical nematicides. For this purpose, M. javanica inoculum was thoroughly mixed with autoclaved sandy loam soil. Then, 6 fertilizers (biofertilizer, phosphate chemical fertilizer (phosphate), potassium chemical fertilizer (potassium), peat moss, vermicompost, and leaf mold) were added individually to the inoculated soil, according to the defined treatments. The nematicide Cadusafos was used as a positive control. A negative control was also included in the experiment (including no fertilizer and no nematicide). Four-leaf seedlings of the tomato (Super Chief cv.) were transferred to the pots filled using 2 kg of the treated soil. After 60 days, reproduction factor (RF), egg mass, and root galling of the nematode were recorded. The results showed that, fertilizer-treated soils had significantly (P≤0.05) lower root galling, egg mass, and RF compared to the negative control. After the nematicide treatment, the highest suppression capability on the RKN was obtained in treatments of phosphate, biofertilizer, potassium, vermicompost, peat moss, and leaf mold, respectively. It can be concluded that, replacing chemical nematicides with fertilizers may be considered as a successful nematode management in tomato fields.

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Section: Discussionmentioning

confidence: 92%

Root-knot nematode, Meloidogyne javanica, in response to soil fertilization

Hemmati¹,

Saeedizadeh

2020

Braz. J. Biol.

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“…Padgham and Sikora (2007) stated that B. megatherium reduced nematode population by 40%. El-Haddad et al (2011) stated that some beneficial bacteria including the nitrogen fixing bacteria, the phosphate solubilizing bacteria and the potassium solubilizing bacteria significantly reduced the nematode multiplication particularly 60 days after inoculation. These results are in a line with those reported by Zavaleta- Mejia and Van Gundy (1989), who reported that Serratia marcescens suppressed root-knot larvae of Meloidogyne incognita possibly due to the volatile substances produced during its metabolic activity.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of some commercial bacterial biofertilizers and isolates against root knot nematode, Meloidogyne incognita infesting green bean, Phaseolus vulgaris

2015

Sci. Agric

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Under field conditions, Four commercial biofertilizers namely, phosphorine (containing phosphate dissolving bacterium namely Bacillus megatherium or megaterium), Rhizobacterin (containing plant growth promotimg bacteria e.g. Bacillus spp. and Pseudomonas fluorescens), potassiumag ( containing potassium dissolving bacterium namely, Bacillus circulans), al-aukadin (containing Rhizobium phaseoli) as well as bacteria, Pseudomonas fluorescens and Serratia spp. as liquid cultures either alone or in combination were tested for biocontrolling root knot nematode, Meloidogyne incognita infesting green bean cv. Hama plants. The results showed that all treatments had the potentiality to significantly (p≤0.05) reduce the root-knot nematode infectivity and reproduction, to great extend, along the growing season of green bean plants as indicated by the number of galls, egg masses and hatched juveniles on roots and number of juveniles in soil. Three months after application, the percentages reduction of the number of galls ranged from 46.4 for phosphorine only (T1) to 72.5% for phosphorine + S. fluorescens (T7) and phosphorine + Serratia spp. (T11). The same trend was noticed for the percentages reduction of egg masses. Single treatments were superior to the combined ones in increasing the studied pod yield parameters (Number and weight of green pods). Phosphorine (T1) and al-aukadin (T4) were as equal as each other in increasing the percentage increase of weight of green pods (92.1%) followed by that recorded by using rhizobacterin (T2). Co-toxicity factors for the two combined treatments of commercial products of phosphorine + S. fluorescens(T7) and phosphorine + Serratia spp.(T11) with M incognita after three months showed additive interaction effects, as they caused higher percentage gall reduction than that caused by either of them alone. At the same trend, the soluble carbohydrate, soluble protein, nitrogen and potassium contents increased in leaves and pods of green bean by some of the tested compounds compared with those of untreated check

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“…Increased phosphorus concentration may lead to reduction in root-knot nematodes. B. megaterium has been evaluated for their effects on a variety of root-knot nematodes [16,17,19,20] reported that B. megaterium greatly reduced numbers of galls, females and egg masses of M. incognita in the roots of sugar-beet followed by B.subtilis, Paecilomyces lilacinus, P. fumosoreus and Trichoderma album respectively. Furthermore, B. megaterium can extensively colonize the rhizosphere and reduce the sugar-beet cyst nematode infection under greenhouse trials [21].…”

Section: Discussionmentioning

confidence: 99%

Induction of Systemic Resistance in Sugar- Beet against Root-Knot Nematode with Commercial Products

Fatma¹,

Ae²,

Ah³

et al. 2014

J Plant Pathol Microbiol

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The potentials of Bio-arc (a commercial formulation of the Bacillus megaterium) at the rate of 5, 10, 15 and 20 ml and Nemastrol (a commercial formulation of active ingredients) at the rate of 0.25 ml, for induction of systemic resistance to sugar-beet var. Negma infected with M. incognita were conducted in two soil types. Results revealed that all treatments with tested rates were found to have nematicidal activity against nematode infection and improved plant growth parameters of sugar-beet with various levels of success. The dual application of Bio-arc+Nemastrol at the rate of 20 ml +0.25 ml proved to be the best and showed significant improvement in plant growth parameters in terms of shoot length (92.6,127.5%) and total plant fresh weight (91.7, 370.4) of sugar-beet grown either in clayey or sandy soil, respectively. Among all treatments Nemastrol ranked next to oxamyl and performed the best and significantly suppressed total nematode population (Rf=1.9, 2.2), root galling (RGI=3.0, 3.0), number of egg masses (EI=3.0, 3.0) and number of eggs / egg mass (Red. %=76.5, 74.5) in clayey and sandy soil, respectively. However, concomitant treatment showed better results than did Bio-arc alone at four tested rates. The greatest suppression in total nematode population was recorded with clayey and sandy soil receiving the dual application of Nemastrol (0.25 ml) and Bio-arc (20 ml) with reproduction factor 2.2, 2.6 and reduction percentages reached 92.8, 92.6% respectively. Leaves of sugar-beet were assayed for their biochemical profiles with respect to NPK, total cholorophyll, total carbohydrates, proteins, and phenols. Moreover, remarkable induction in such chemical constituents except phenol content was recorded with the application of Bio-arc+Nemastrol (20 ml+0.25 ml). On the other hand, activities of related enzymes i.e. Peroxidase (PO) and Polyphenol Oxidase (PPO) were evaluated in roots of sugar-beet infected with M. incognita. The enzymes accumulation was much greatest in Bio-arc+Nemastrol (20+0.25 ml) treated plants compared to control as they reached their peak at day 9 th from nematode inoculation.

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The nematicidal effect of some bacterial biofertilizers on Meloidogyne incognita in sandy soil

Cited by 55 publications

References 16 publications

Root-knot nematode, Meloidogyne javanica, in response to soil fertilization

Root-knot nematode, Meloidogyne javanica, in response to soil fertilization

Evaluation of some commercial bacterial biofertilizers and isolates against root knot nematode, Meloidogyne incognita infesting green bean, Phaseolus vulgaris

Induction of Systemic Resistance in Sugar- Beet against Root-Knot Nematode with Commercial Products

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