The Sirex wasp and its biological control in plantations of radiata pine variably defoliated by Dothistroma septospora in north-eastern Victoria

1993 ◽  
Vol 56 (2) ◽  
pp. 129-139 ◽  
Author(s):  
F. G. Neumann ◽  
N. G. Collett ◽  
I. W. Smith
Keyword(s):  
Biological Control ◽  
Radiata Pine ◽  
North Eastern

Biological control of the floating fern Salvinia molesta in north-eastern Australia: plant-herbivore interactions

1987 ◽  
Vol 77 (1) ◽  
pp. 09-17 ◽  
Author(s):  
I. W. Forno
Keyword(s):  
Biological Control ◽  
Plant Growth ◽  
Salvinia Molesta ◽  
Eastern Australia ◽  
Herbivore Interactions ◽  
North Eastern ◽  
Mat Density ◽  
Plant Herbivore

AbstractThe curculionid Cyrtobagous salviniae Calder & Sands and the pyralid Samea multiplicalis Guenée were released in north-eastern Australia for the biological control of the floating fern Salvinia molesta. C. salviniae destroyed large areas of weed and was successful at coastal and elevated sites. At equilibrium, there was less than 1 adult/20 plants and only a few, very small plants at each site. The rate at which the weed was controlled varied with mat density. The moth did not reduce plant growth permanently at any site and did not interfere with the performance of the weevil.

Populations of Four Small Mammals in Radiata Pine Plantations and Eucalypt Forests of North-Eastern Victoria.

1978 ◽  
Vol 5 (3) ◽  
pp. 305 ◽  
Author(s):  
GC Suckling ◽  
A Heislers
Keyword(s):  
Small Mammals ◽  
Radiata Pine ◽  
Pine Plantations ◽  
Native Vegetation ◽  
Forest Types ◽  
Eucalypt Forest ◽  
North Eastern ◽  
Antechinus Stuartii ◽  
Rattus Fuscipes ◽  
Eucalypt Forests

[See also FA 39, 2088] A 2-yr trapping study was made on (a) Rattus fuscipes, (b) Antechinus stuartii, (c) Mus musculus and (d) A. swainsonii in mature eucalypt forest, a narrow stream-side strip of eucalypt forest, and in 3 pine plantations, 8, 22 and 42 yr old. In each area (a) and (d) were largely and (c) always confined to dense native vegetation along streams, whilst (b) was more frequent along streams than on slopes. More animals were found away from streams in young pine plantations than in other forest types.

Higher efficiency in organic than in conventional management of biological control in horticultural crops in north-eastern Italy

2016 ◽  
Vol 97 ◽  
pp. 89-101 ◽  
Author(s):  
Silvia Fusaro ◽  
Federico Gavinelli ◽  
Daniele Sommaggio ◽  
Maurizio G. Paoletti
Keyword(s):  
Biological Control ◽  
Horticultural Crops ◽  
Conventional Management ◽  
North Eastern

Albino Strains of Ophiostoma Species for Biological Control of Sapstaining Fungi

Holzforschung ◽  
2003 ◽  
Vol 57 (3) ◽  
pp. 237-242 ◽  
Author(s):  
B. W. Held ◽  
J. M. Thwaites ◽  
R. L. Farrell ◽  
R. A. Blanchette
Keyword(s):  
Biological Control ◽  
New Zealand ◽  
Radiata Pine ◽  
Field Trials ◽  
Wood Chips ◽  
Biological Control Potential ◽  
Leptographium Procerum ◽  
Ophiostoma Floccosum ◽  
Ophiostoma Piliferum ◽  
Prevalent Species

SummaryAlbino strains ofOphiostoma floccosum,O. piceaeandO. pluriannulatumwere selected and screened for biological control of sapstaining fungi on New Zealand radiata pine (Pinus radiata). Albino strains were obtained through matings and single ascospore isolations from cultures of prevalent species in New Zealand. These strains do not synthesize the melanin-like hyphal pigments of common sapstaining fungi. Additional mating studies were also carried out to obtain isolates ofO. piceaeandO. floccosumthat lacked pigmented fruiting structures. Several albino isolates ofO. piceaewith colorless synnemata and isolates ofO. floccosumwith little to no synnemata were obtained. Biological control potential of the albino isolates was evaluated in the laboratory by challenging them on wood chips with fungi that cause extensive sapstain in pine,Leptographium procerum,Ophiostoma piliferumandSphaeropsis sapinea. Many albino isolates ofO. floccosum,O. piceaeandO. pluriannulatumwere effective in stopping the challenge fungi from staining wood chips and were fast growing and colorless when grown unchallenged on wood chips. Selected albino isolates ofO. pluriannulatumwere used in two field trials in New Zealand to control sapstain. Several strains were found to significantly reduce dark sapstain as compared to the untreated control logs.

scholarly journals BIOLOGICAL CONTROL OF KILN BROWN STAIN IN RADIATA PINE

2002 ◽  
Vol 4 (2) ◽  
Author(s):  
M.C. McCurdy ◽  
J. J. Nijdam ◽  
R. B. Keey
Keyword(s):  
Biological Control ◽  
Radiata Pine

scholarly journals Susceptibility of the fall armyworm, Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae), to four species of entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) from Mizoram, North-Eastern India

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Hrang Chal Lalramnghaki ◽  
Lalramliana ◽  
Hmar Tlawmte Lalremsanga ◽  
Vanlalhlimpuia ◽  
Mary Lalramchuani ◽  
...  
Keyword(s):  
Biological Control ◽  
Spodoptera Frugiperda ◽  
Entomopathogenic Nematodes ◽  
Fall Armyworm ◽  
Instar Larva ◽  
Life Stages ◽  
Eastern India ◽  
Larval Instars ◽  
North Eastern ◽  
Lepidoptera Noctuidae

Abstract Background Outbreak of the fall armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) occurred in Mizoram, North-Eastern India. The infestation spread in the entire state covering a total area of around 2840 hectares of maize cultivated land. Entomopathogenic nematodes (EPNs) represent potential candidates for the biological control of S. frugiperda. In the study, the susceptibility of the pest against 4 locally isolated EPN species Heterorhabditis indica, H. baujardi, Steinernema sangi and S. surkhetense was evaluated. Results The results indicated that all the isolated EPN species showed a high rate of larvicidal and pupicidal activities against the pest. Mortality between 43.75–100.00 and 25.00–100.00% of 3rd and 5th larval instars, respectively (at concentrations 10–800 IJs/larva), and 37.50–68.75% mortality of pupae (at concentrations 200–1600 IJs /pupa) were found after exposure to the EPN species. The mortality rate of the pest showed significant variations with life stages of the host insect, nematode concentrations and incubation time. Based on the median lethal concentration (LC50), H. indica was the most pathogenic species, followed by S. sangi, H. baujardi and S. surkhetense. The LC50 values of H. indica at 72 h post-incubation were 20.26 and 62.07 IJs/larva for the 3rd and 5th larval instars, respectively, and 913.34 IJs/pupa. The penetration assay showed that H. indica had the highest penetration rate into the hosts, 27.24, 21.30 and 20.00% in the 3rd, 5th larval instars and pupae, respectively. Furthermore, all the EPN isolates were capable of successful multiplication inside the cadaver of S. frugiperda that showed significant differences with the EPN isolates and life stages of the pest. Among the isolates, H. indica showed the highest multiplication rates, 17,692.25 ± 2103.59, 8345.63 ± 785.34 and 79,146.38 ± 5943.73 IJs per 3rd instar larva, 5th instar larva and pupa, respectively. Conclusions The study revealed that the 4 species of EPNs showed a high potency against S. frugiperda, thereby having the potential to be developed as a biological control agent against the pest. Moreover, the isolated EPN species could potentially serve as alternatives for chemical insecticides and could further be incorporated into the Integrated Pest Management (IPM).

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