Enhanced activity of introduced biocontrol agents in solarized soils and its implications on the integrated control of tomato damping-off caused by Pythium spp

Jayaraj, J.; Radhakrishnan, N.

doi:10.1007/s11104-008-9539-y

Cited by 24 publications

(14 citation statements)

References 30 publications

(46 reference statements)

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“…Development of pest‐control technologies that reduce reliance on chemicals or minimize pesticide emissions to very low levels is needed to decrease the negative consequences on environmental and human health associated with pesticide use. Several nonchemical control methodologies have been proposed for pest control, including steam sterilization (Awuah and Lorbeer, 1991; Luvisi et al, 2006), solarization (Katan, 1981; Hartz et al, 1993; Chellemi et al, 1997; Gallo et al, 2007), biocontrol (Jayaraj and Radhakrishnan, 2008), natural products (Matthiessen and Kirkegaard, 2006; Coelho et al, 1999), and low‐input or organic farming approaches (Lebbink et al, 1994; Reganold et al, 2001), to mention a few. Nonchemical methods offer the potential to grow crops without the use of pesticides, thereby eliminating the impact on human and environmental health.…”

Section: Emissions Of Pesticidesmentioning

confidence: 99%

Managing Agricultural Emissions to the Atmosphere: State of the Science, Fate and Mitigation, and Identifying Research Gaps

et al. 2011

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The impact of agriculture on regional air quality creates significant challenges to sustainability of food supplies and to the quality of national resources. Agricultural emissions to the atmosphere can lead to many nuisances, such as smog, haze, or offensive odors. They can also create more serious effects on human or environmental health, such as those posed by pesticides and other toxic industrial pollutants. It is recognized that deterioration of the atmosphere is undesirable, but the short‐ and long‐term impacts of specific agricultural activities on air quality are not well known or understood. These concerns led to the organization of the 2009 American Chemical Society Symposium titled Managing Agricultural Gas and Particle Emissions. An outcome of this symposium is this special collection of 14 research papers focusing on various issues associated with production agriculture and its effect on air quality. Topics included emissions from animal feeding operations, odors, volatile organic compounds, pesticides, mitigation, modeling, and risk assessment. These papers provide new research insights, identify gaps in current knowledge, and recommend important future research directions. As the scientific community gains a better understanding of the relationships between anthropogenic activities and their effects on environmental systems, technological advances should enable a reduction in adverse consequences on the environment.

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Section: Emissions Of Pesticidesmentioning

confidence: 99%

Managing Agricultural Emissions to the Atmosphere: State of the Science, Fate and Mitigation, and Identifying Research Gaps

et al. 2011

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“…P. fluorescens mixed with other strains of fungi/bacteria increased the biocontrol efficacy (Duffy et al 1996). Studies on fungal and bacterial biocontrol agents against chilli damping-off have been attempted earlier under both greenhouse and field conditions (Jayaraj and Radhakrishnan 2008;Kabdal et al 2010). However, no attempts have been made for the management of damping-off of chilli by using combination of fungal antagonist and endophytic P. fluorescens and to understand the mechanism of disease resistance induced by combination of biocontrol agents.…”

Section: Introductionmentioning

confidence: 99%

Induction of systemic resistance by mixtures of fungal and endophytic bacterial isolates against Pythium aphanidermatum

2011

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The efficacy of eight fungal and ten endophytic bacterial isolates were tested for their ability to inhibit the growth of Pythium aphanidermatum, the causal agent of chilli damping-off. In vitro studies revealed that Trichoderma viride (TVA) and endophytic Pseudomonas fluorescens (EBL 20-PF) showed the highest inhibition of mycelial growth (71.5%; 76.7%) of P. aphanidermatum. Both the antagonists were compatible with each other and they were tested alone and together in vivo for the control of P. aphanidermatum. Besides, the induction of defenserelated enzymes such as peroxidase (PO), polyphenoloxidase (PPO), phenylalanine ammonia-lyase (PAL), PR-protein like b-1, 3-glucanase and the accumulation of phenolics in chilli seedlings due to the application of bioagents were also studied. Combined application of talcbased formulation of bio-agents and challenge inoculated with P. aphanidermatum recorded maximum induction of defense-related enzymes, PR-proteins and accumulation of phenolics compared with individual application. This study suggest that the increased induction of defense-related enzymes (four to fivefold) and phenolic content (sixfold) due to the combination treatment of bioagents might have involved in the reduction of damping-off incidence and in turn increased the plant growth and yield of chilli.

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“…Radhakrishnan [17], Kabdal et al [18]. Bacillus subtilis proved to be a dominant biological control agent against Pythium aphanidermatum.…”

Section: Discussionmentioning

confidence: 99%

Bio-efficacy of Bacillus subtilis against Damping off Disease in Brinjal

Awasthi

Srivastava

Trivedi

et al. 2019

ARRB

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Bacillus sp is one of the biocontrol agents are extensively used in management of fungal diseases of crop plants, exhibiting mycoparasitism against a wide range of plant pathogens. In the present investigation Efficacy of Bacillus subtilis was tested against Pythium aphanidermatum under glass house and field conditions. With regard to the germination and seedling growth parameters, the treatment T2 (liquid formulation of Bacillus subtilis @10 ml/L) recorded the highest germination percentage (92.59%), shoot length (59.3 cm), root length (24.3 cm), vigor index (7740.52) and yield (22.67 mt/ha). This was followed by the treatments T3, T1 and T4 in the decreasing order of merit. In the biometric observations also, 10 ml/L and 20 ml/L concentration of liquid formulation of Bacillus subtilis recorded statistically significant results. Observations on total protein content in brinjal plants treated with different concentrations of Bacillus subtilis revealed that treatment T2 was found best in both field and glass house conditions yielded highest protein as 0.44mg/ml and 0.30mg/ml respectively. The least values of germination, growth parameters, protein content and yield were observed in untreated control.

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Enhanced activity of introduced biocontrol agents in solarized soils and its implications on the integrated control of tomato damping-off caused by Pythium spp

Cited by 24 publications

References 30 publications

Managing Agricultural Emissions to the Atmosphere: State of the Science, Fate and Mitigation, and Identifying Research Gaps

Managing Agricultural Emissions to the Atmosphere: State of the Science, Fate and Mitigation, and Identifying Research Gaps

Induction of systemic resistance by mixtures of fungal and endophytic bacterial isolates against Pythium aphanidermatum

Bio-efficacy of Bacillus subtilis against Damping off Disease in Brinjal

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