EFFICIENCY OF Coccinella undecimpunctata L.And Chrysoperla carnea (STEPHENS) As BIOLOGICAL CONTROL AGAINST Myzus persicae (SULZER) INFESTING TOMATO PLANTS.

The introduction of the eleven-spotted ladybird Coccinella undecimpunctata to New Zealand in 1874 has been widely quoted as the first importation of an insect for biological control in New Zealand and one of the first anywhere. However, searches of historical records show no evidence that such an introduction was made or attempted. Instead, there is clear evidence that the presently accepted record arose by a process of cumulative misreporting. An account of discussions in the Entomological Society of London in December 1873 about possible introductions of various beneficial insects to New Zealand was misreported by the American entomologist C. V. Riley, and several subsequent authors restated his version with further modifications and additions. This created the record of the introduction of C. undecimpunctata to New Zealand in 1874 that has been accepted and repeated ever since.

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Land-Use Effect on Olive Groves Pest Prays oleae and on Its Potential Biocontrol Agent Chrysoperla carnea

Insects ◽

10.3390/insects12010046 ◽

2021 ◽

Vol 12 (1) ◽

pp. 46

Author(s):

João Frederico Alves ◽

Sara Mendes ◽

António Alves da Silva ◽

José Paulo Sousa ◽

Daniel Paredes

Keyword(s):

Biological Control ◽

Land Use ◽

Biological Control Agent ◽

Control Agent ◽

Agricultural Landscapes ◽

Chrysoperla Carnea ◽

Land Uses ◽

Prays Oleae ◽

Potential Biocontrol Agent ◽

Olive Groves

Olive growing has been intensified through the simplification of agricultural landscapes. In order to rethink the environmental drawbacks of these practices, conservation biological control techniques have been examined. In this work, Prays oleae and its natural enemy Chrysoperla carnea were monitored to account for the effects of the amount and diversity of different land-uses. We found that C. carnea showed an attraction to areas with high abundances of P. oleae but this predator did not display any affection by the different land-uses. Inversely, P. oleae abundance was lower in diverse landscapes and higher in simplified ones. Importantly, higher abundances of C. carnea were related to lower infestation levels of P. oleae in the late part of the season. These results corroborate the attraction of C. carnea to the olive moth, highlighting the potential of C. carnea as a biological control agent of this pest, assert that the promotion of land-use diversity can reduce P. oleae and confirm that landscapes dominated by olive groves can promote this pest. The present study aims at contributing to the discussion about the management of agricultural ecosystems by providing farmers with sustainable alternatives that do not have harmful effects on the environment and public health.

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Attempts at Biological Control of Clavibacter michiganensis subsp. michiganensis On Rockwool-Grown Greenhouse Tomatoes

Vegetable Crops Research Bulletin ◽

10.2478/v10032-008-0027-y ◽

2008 ◽

Vol 69 (1) ◽

pp. 125-134 ◽

Cited By ~ 1

Author(s):

Czesław Ślusarski

Keyword(s):

Biological Control ◽

Biocontrol Agent ◽

Root Zone ◽

First Year ◽

Bacterial Canker ◽

Clavibacter Michiganensis ◽

Tomato Plants ◽

Clavibacter Michiganensis Subsp ◽

Greenhouse Tomatoes ◽

Bacterial Canker Of Tomato

Attempts at Biological Control ofClavibacter michiganensissubsp.michiganensisOn Rockwool-Grown Greenhouse TomatoesTwo greenhouse experiments were conducted in which tomato plants artificially inoculated withClavibacter michiganensissubsp.michiganensis(Cmm) were grown in an open rockwool system as spring and autumn crops. Two isolates of the rhizosphere bacteria,Pseudomonas fluorescensstrain PSR21,Pseudomonas reactansstrain GGS14, a commercial biocontrol agent Aqua Bac Plus (Bacillusspp.) and a proprietary disinfectant containing QAC+Chx, applied at weekly intervals, were evaluated for their efficiency in the suppression of the bacterial canker of tomato. All treatments tested revealed to be ineffective in controlling the disease. The introduction ofCmmbacteria into the fresh rockwool in the first year of its usage resulted in a 100% death of tomato plants, whereas following an artificial inoculation of two- and three-year-old rockwool slabs withCmmbacteria dead plants amounted to 70 and 58%, respectively. This indicates that in the re-used rockwool a natural microbial suppressiveness to bacterial canker of tomato might be developed in the root zone.

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