Biological substitutes for pesticides

Gerhardson, B.

doi:10.1016/s0167-7799(02)02021-8

Cited by 291 publications

(162 citation statements)

References 34 publications

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“…Postharvest disinfectant treatments had shown negative effects on the litchi and mango microflora (Govender et al, 2005). It is also evident from this study that the addition of PPCB004, the biocontrol agent in the integrated treatment with 1-MCP helped in maintaining the natural microbial ecological balance (Gerhardson, 2002;Ippolito and Nigro, 2000). Furthermore, the integrated treatment with 1-MCP þ PPCB004 reduced the incidence and severity of postharvest diseases by reducing the total fungal population and maintaining higher bacterial and yeast populations on the fruit surface.…”

Section: Recovery Of B Amyloliquefaciens Ppcb004mentioning

confidence: 66%

Effect of biocontrol agent Bacillus amyloliquefaciens and 1-methyl cyclopropene on the control of postharvest diseases and maintenance of fruit quality

2011

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a b s t r a c tEfficacy of biocontrol agent Bacillus amyloliquefaciens PPCB004 was evaluated on the control of anthracnose and phomopsis rot in 'Solo' papaya pre-treated with 1-methyl cyclopropene (100 ml) (1-MCP) during storage. This treatment was compared to the untreated control, commercial treatment (washing in chlorinated water), stand alone 1-MCP and PPCB004 treatment. Although fruit pre-treated with 1-MCP delayed the ripening (100% yellow) after cold storage by 9e10 d, it showed higher incidence and severity of anthracnose and phomopsis rot than the fruit subjected to commercial treatment. Application of PPCB004 after 1-MCP pre-treatment (1-MCP þ PPCB004) reduced the anthracnose and phomopsis incidence and severity after cold storage (10 C, 85% RH for 14 d) and ripening at 25 C. The 1-MCP þ PPCB004 treatment helped to retain the fruit firmness, overall quality and uniform yellow skin (100%) and flesh colour after ripening. The PPCB004 was effectively recovered from stand alone PPCB004 and 1-MCP þ PPCB004 treated fruit after cold storage and ripening. The PPCB004 population showed an increase by 1 log units after ripening in 1-MCP þ PPCB004 treated fruit. After ripening the recovery of PPCB004 population was higher (0.7 log units) in 1-MCP þ PPCB004. The total recovery of fungal population on the fruit surface after ripening was lower in 1-MCP þ PPCB004 and stand alone PPCB004 treated fruit. It can be concluded that application of B. amyloliquefaciens PPCB004 with 1-MCP pretreated papaya (at 25e30% skin yellow stage) can significantly reduce disease incidence associated with 1-MCP treatment. This treatment has the potential for commercial application in the 'organic' papaya industry.

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Section: Recovery Of B Amyloliquefaciens Ppcb004mentioning

confidence: 66%

Effect of biocontrol agent Bacillus amyloliquefaciens and 1-methyl cyclopropene on the control of postharvest diseases and maintenance of fruit quality

2011

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“…So, there is an urgent need to use the substitutes without or with less harmful side effects. Thus, recently, microorganisms as an inoculants to reduce the use of chemicals are being a matter of interest 13 . For stimulating rice seed germination and rice growth promotion biologically, there are many attempts to find successful bacteria 3,5,21,42 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion

Gholamalizadeh

Khodakaramian

Ebadi

2017

Braz. arch. biol. technol.

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“…Thence, effective strategies to control the pathogen are demanding. In the other hand, increasing use of chemical application causes several negative effects, such as the development of pathogen resistance to the applied agents and their non-target environmental impacts (Gerhardson, 2002). A growing awareness of agricultural practices in using chemicals have a great impact on human health and on the environment has spawned research into the development of effective biocontrol agents to protect crop against diseases.…”

Section: Introductionmentioning

confidence: 99%

In vitro Antagonistic Activity of Trichoderma harzianum against Rhizoctonia solani The Causative Agent of Potato Black Scurf and Stem Canker

Ibrahim

2017

Egypt. J. Bot.

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IN EGYPT Potato (Solanum tuberosum L.) is considered one of the most important vegetable crops as well as many others countries in the world. It plays an important role in the Egyptian agricultural economy, not for local consumption but also for exportation especially to Europe, Russia and Arabic countries. However, potato crop suffer from more than 40 pests and diseases caused by insects, nematodes, viruses, bacteria and fungi, of which black scurf and stem canker induced by Rhizoctonia solani is probably the most serious disease. The world yield losses caused by R. solani were estimated to 5-15%. R. solani is an unspecialized parasite, survive in soil in the absence of host plant and make itself a very difficult pathogen to manage. Reduction or elimination of soil borne inoculum is the only effective solution to overcome the problem and this may be achieved through the application of various control measures of which fungal antagonists consider among the most important tactic. Although R. solaniis usually controlled through the application of chemicals, the serious ecological and financial toll of this fungus has prompted for research on biopesticides as a viable alternative. Trichoderma spp. were well-known fungi often used for the biological control of crop pests, whose anti-fungal mechanisms include competition for the substrate, antibiosis and/or mycoparasitism. Five isolates of Trichoderma harzianum were tested in vitro for their antagonistic potential against Rhizoctonia solani. Both Trichoderma harzianum and Rhizoctonia solani were identified by molecular and morphological methods. In dual culture of all isolates were found antagonistic to the growth of R. solani. The hyphal interaction studied using light microscopy revealed destructive mycoparasitism of R. solani by T. harzianum. The method of mycoparasitism was sparse to intense coiling of R. solani followed by disintegration, disorganization and death of R. solani mycelium.

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Biological substitutes for pesticides

Cited by 291 publications

References 34 publications

Effect of biocontrol agent Bacillus amyloliquefaciens and 1-methyl cyclopropene on the control of postharvest diseases and maintenance of fruit quality

Effect of biocontrol agent Bacillus amyloliquefaciens and 1-methyl cyclopropene on the control of postharvest diseases and maintenance of fruit quality

Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion

In vitro Antagonistic Activity of Trichoderma harzianum against Rhizoctonia solani The Causative Agent of Potato Black Scurf and Stem Canker

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