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Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings

Received: 21 October 2018    Accepted: 15 November 2018    Published: 24 December 2018
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Abstract

Forestry expertise and plantations managers are struggling to find cheaper and sustainable solutions to contain the losses caused by Leptocybe invasa in the last nine years on the forest stands in Mozambique. Aiming to help find a solution in the control of L. invasa early in the nursery, we conducted an experimental trial at the Niassa Forestry company nursery, located in the Niassa province, northern Mozambique in February 2015. Three insecticides: Acetamiprid, Thiamethoxam, Imidacloprid, with and without adherent and pH regulator were tested. The experiment had seven treatments including the control. The number of seedlings infested by the gall wasp were assessed 15, 30, 45 and 60 days after the seeds were sown in the nursery. Data were analysed in R package. Normality and homogeneity of variances were tested through Shapiro-Wilk and Bartlett's tests respectively. Analysis of Variance (ANOVA) and parametric means test (Tukey-HSD), were used to assess whether there was difference among the treatments. Results showed difference between treatments at 0.01% of significance after 15, 30 and 45 days and at 5% in the 60 days after sowing. With less seedlings infested by the gall wasp, Imidacloprid with and without adherent was almost superior compared to all other pesticides in all assessment. The use of adherent and pH regulators negatively affected the performance of insecticides, except in the Imidacloprid. This study findings should not however, be overall generalized, instead, more research can be conducted to verify the consistency of these results before being widely implemented.

Published in American Journal of Agriculture and Forestry (Volume 6, Issue 6)
DOI 10.11648/j.ajaf.20180606.22
Page(s) 246-252
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Eucalyptus Seedlings, Planted Forest, Insecticides and L. Invasa

References
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[2] Mendel Z, Protasov A, Fisher N, Salle J La. Taxonomy and biology of Leptocybe invasa gen. & sp. n. (Hymenoptera: Eulophidae), an invasive gall inducer on Eucalyptus. Aust. J. Entomol. 2004; 101–113.
[3] Vastrad AS, Kumari NK, Ramanagouda SH, Goud KB. Management of eucalyptus gall wasp, Leptocybe invasa Fisher & La Salle in greenhouse. Pestology. 2011; 35(3): 44–53.
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[5] Landry J, Chirwa PW. Analysis of the potential socio-economic impact of establishing plantation forestry on rural communities in Sanga district, Niassa province, Mozambique. Land use policy [Internet]. 2011; 28(3): 542–551. doi:10.1016/j.landusepol.2010.11.001. Available from: http://linkinghub.elsevier.com/retrieve/pii/S0264837710001122.
[6] Mbanze AA, Romero AM, Batista AC, Ramos- M, Guacha L, Martinho C, et al. Assessment of causes that contribute to the occurrence of plantations forests fires in Niassa Province , North of Mozambique. African J. Agric. Res. [Internet]. 2013; 8(45): 5684–5691. doi:10.5897/AJAR12.1969. Available from: http://www.academicjournals.org/AJAR.
[7] Castilho D. First Assessment on the Prevalence of Leptocybe invasa in the Eucalyptus sp Plantation of the Niassa Forests. Lichinga: 2015.
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[13] FAO. Forest pest species profile: Leptocybe invasa. 2012;(August): 96–98. Available from: http://www.fao.org/forestry/22072-0e774d1f27c87fa48a76b498a3b4bd3b4.pdf.
[14] Fernandes GW, Carneiro MAA. Insetos galhadores. In: Bioecologia e nutrição de insetos: base para o manejo integrado de pragas. Brasília: Embrapa; 2009. p. 597–640.
[15] Chirinzane CJ, Souza MD de, Sousa NJ, Rezende EH, Alves T, Bandeira RR, et al. First report of Leptocybe invasa Fisher and La’Salle (Hymenoptera: Eulophidae) in Mozambique. African J. Agric. Res. 2014; 9(49): 3555–3558. doi:10.5897/AJAR2013.8109.
[16] Garlet J, Costa EC, Boscardin J, Deponti G, Shwengber CR, Machado LM. Leptocybe invasa em Eucalyptus sp. no estado do Rio Grande do Sul, Brasil. Ciência Rural. 2013; 43: 2175–2177. doi:10.1590/S0103-84782013001200009.
[17] Kulkarni H, Kumari NK, Vastrad a S, Basavanagoud K, Doe S. Release and recovery of parasitoids in eucalyptus against gall wasp , Leptocybe invasa ( Hymenoptyera : Eulophidae ) under green house. Karnataka J. Agric. Sci. 2010; 23(1): 91–92.
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    Aires Mbanze, Daniel Salvador Castilho, Custódio Matavel, Romana Bandeira, Carlos Fernado Jairoce. (2018). Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings. American Journal of Agriculture and Forestry, 6(6), 246-252. https://doi.org/10.11648/j.ajaf.20180606.22

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    ACS Style

    Aires Mbanze; Daniel Salvador Castilho; Custódio Matavel; Romana Bandeira; Carlos Fernado Jairoce. Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings. Am. J. Agric. For. 2018, 6(6), 246-252. doi: 10.11648/j.ajaf.20180606.22

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    AMA Style

    Aires Mbanze, Daniel Salvador Castilho, Custódio Matavel, Romana Bandeira, Carlos Fernado Jairoce. Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings. Am J Agric For. 2018;6(6):246-252. doi: 10.11648/j.ajaf.20180606.22

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  • @article{10.11648/j.ajaf.20180606.22,
      author = {Aires Mbanze and Daniel Salvador Castilho and Custódio Matavel and Romana Bandeira and Carlos Fernado Jairoce},
      title = {Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings},
      journal = {American Journal of Agriculture and Forestry},
      volume = {6},
      number = {6},
      pages = {246-252},
      doi = {10.11648/j.ajaf.20180606.22},
      url = {https://doi.org/10.11648/j.ajaf.20180606.22},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20180606.22},
      abstract = {Forestry expertise and plantations managers are struggling to find cheaper and sustainable solutions to contain the losses caused by Leptocybe invasa in the last nine years on the forest stands in Mozambique. Aiming to help find a solution in the control of L. invasa early in the nursery, we conducted an experimental trial at the Niassa Forestry company nursery, located in the Niassa province, northern Mozambique in February 2015. Three insecticides: Acetamiprid, Thiamethoxam, Imidacloprid, with and without adherent and pH regulator were tested. The experiment had seven treatments including the control. The number of seedlings infested by the gall wasp were assessed 15, 30, 45 and 60 days after the seeds were sown in the nursery. Data were analysed in R package. Normality and homogeneity of variances were tested through Shapiro-Wilk and Bartlett's tests respectively. Analysis of Variance (ANOVA) and parametric means test (Tukey-HSD), were used to assess whether there was difference among the treatments. Results showed difference between treatments at 0.01% of significance after 15, 30 and 45 days and at 5% in the 60 days after sowing. With less seedlings infested by the gall wasp, Imidacloprid with and without adherent was almost superior compared to all other pesticides in all assessment. The use of adherent and pH regulators negatively affected the performance of insecticides, except in the Imidacloprid. This study findings should not however, be overall generalized, instead, more research can be conducted to verify the consistency of these results before being widely implemented.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Efficacy of Three Insecticides in the Control Gall Wasp Leptocybe invasa in Eucalyptus urograndis Seedlings
    AU  - Aires Mbanze
    AU  - Daniel Salvador Castilho
    AU  - Custódio Matavel
    AU  - Romana Bandeira
    AU  - Carlos Fernado Jairoce
    Y1  - 2018/12/24
    PY  - 2018
    N1  - https://doi.org/10.11648/j.ajaf.20180606.22
    DO  - 10.11648/j.ajaf.20180606.22
    T2  - American Journal of Agriculture and Forestry
    JF  - American Journal of Agriculture and Forestry
    JO  - American Journal of Agriculture and Forestry
    SP  - 246
    EP  - 252
    PB  - Science Publishing Group
    SN  - 2330-8591
    UR  - https://doi.org/10.11648/j.ajaf.20180606.22
    AB  - Forestry expertise and plantations managers are struggling to find cheaper and sustainable solutions to contain the losses caused by Leptocybe invasa in the last nine years on the forest stands in Mozambique. Aiming to help find a solution in the control of L. invasa early in the nursery, we conducted an experimental trial at the Niassa Forestry company nursery, located in the Niassa province, northern Mozambique in February 2015. Three insecticides: Acetamiprid, Thiamethoxam, Imidacloprid, with and without adherent and pH regulator were tested. The experiment had seven treatments including the control. The number of seedlings infested by the gall wasp were assessed 15, 30, 45 and 60 days after the seeds were sown in the nursery. Data were analysed in R package. Normality and homogeneity of variances were tested through Shapiro-Wilk and Bartlett's tests respectively. Analysis of Variance (ANOVA) and parametric means test (Tukey-HSD), were used to assess whether there was difference among the treatments. Results showed difference between treatments at 0.01% of significance after 15, 30 and 45 days and at 5% in the 60 days after sowing. With less seedlings infested by the gall wasp, Imidacloprid with and without adherent was almost superior compared to all other pesticides in all assessment. The use of adherent and pH regulators negatively affected the performance of insecticides, except in the Imidacloprid. This study findings should not however, be overall generalized, instead, more research can be conducted to verify the consistency of these results before being widely implemented.
    VL  - 6
    IS  - 6
    ER  - 

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Author Information
  • Faculty of Agrarian Sciences, Universidade Lúrio, Sanga, Mozambique; Higher Instituto of Agronomy (ISA), Universidade de Lisboa, Lisbon, Portugal; Nova School of Business and Economics, Universidade Nova de Lisboa, Lisbon, Portugal

  • Florestas do Niassa, Litunde Nursery, Lichinga City, Mozambique

  • Faculty of Agrarian Sciences, Universidade Lúrio, Sanga, Mozambique

  • Faculty of Agronomy and Forest Engineering, Eduardo Mondlane University, Maputo, Mozambique

  • Faculty of Agrarian Sciences, Universidade Lúrio, Sanga, Mozambique

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