Susceptibility of Eucalyptus Species and Clones to Red Gum Lerp Psyllid, Glycaspis brimblecombei, (Hemiptera: Psyllidae) in Mbizi Forest Plantation, Tanzania

Susceptibility of Eucalyptus Species and Clones to Red Gum Lerp Psyllid, Glycaspis brimblecombei, (Hemiptera: Psyllidae) in Mbizi Forest Plantation, Tanzania



Revocatus Petro, Aloyce Mpiri, Ally Mkude



Glycaspis brimblecombei is a sap-sucking insect that
feeds on Eucalypts. The pest is native to Australia. The nymph feeds on
eucalypt leaves and secretes honeydew with which they construct a waxy
cover (called a lerp) around themselves. This cover is whitish and
conical in shape and shelters the insects until the adult stage. The
insect is considered a serious pest that causes leaf discoloration,
severe leaf drop, twig dieback and some tree mortality on some
Eucalyptus species. In October 2016, the red gum lerp psyllid was
recorded for the first time in Mbizi forest plantation in Tanzania
infesting Eucalyptus camaldulensis and different Eucalyptus clones. A
study was conducted to determine the susceptibility of Eucalypt
germplasm to the insect pest. Results showed that E. camaldulensis was
more infested followed by GC 514, GC 167, GC 584, GC 15, GC 785 clones
while GC 940 was the least infested. Eucalyptus grandis was not
infested. Stakeholders can be able to use the susceptibility grouping of
the Eucalyptus germplasm to determine what to plant in areas of red gum
lerp psyllid infestation. Similar research work should be carried in
all major host tree growing areas to determine susceptibility groups for
the areas. 



10.22161/ijeab/2.1.52



http://ijeab.com/upload_document/issue_files/52%20IJEAB-FEB-2017-4-Susceptibility%20of%20Eucalyptus%20Species%20and%20Clones%20to%20Red%20Gum%20Lerp.pdf



http://ijeab.com/submit-paper/

Comments

Post a Comment

Popular posts from this blog

The Ecological Impacts of Light Pollution at Night-time a Mechanistic Appraisal

The Ecological Impacts of Light Pollution at Night-time a Mechanistic Appraisal Abdullahi MG, Roslan U, Kamarudin M. K. A. Artificial light at night and its negative consequences are of great interest in the fields of Ecology, Human Geography Astronomy, and Human Health. Most of the studies to date concentrated on the influences of light pollution has on our ability to view the night sky, on biodiversity, and ecosystems. Though, in recent years, with the use of new technologies sensors, which provide accurate information for determining of night lights at the area, most consideration were given for estimating artificial light at night within the urban areas. In this study, urban night lights within the cities of Nigeria was evaluated by monitoring data from the ground measurements using Sky Quality Meter (SQM-LU-DL) devices. Besides, the SQM was used at the zenith (upward direction) for maximum evaluating of artificial light at the sites. Differences in night sky bri...
Read more

Studying the tendency of citizens to participate in the protection and development of land scape in Tehran

Studying the tendency of citizens to participate in the protection and development of land scape in Tehran Shadi Maleki, Abbas Mafi, Seyedeh Mahsa Hosseini Today, as an essential part and parcel of urban landscape that they play a major role in metabolism and create a lack of serious damage to urban life. This study performed to investigate the willingness of citizens to participate in activities to protect and develop landscapeof Tehran district 4. The research was descriptive and correlation method that is used for collecting information. The statistical population consisted of district 4 of Tehran. The sample size was determined 230 by using Cochrane method. A questionnaire was used to collect data. According to the research, 63.04 percent of citizens showed participation in a high level. Among the variables investigated how citizen participation in conservation and development of landscape, effective strategies to motivate citizens to participate,the reasons for la...
Read more

Land Use Land Cover Change Detection by Using Remote Sensing Data in Akaki River Basin

Land Use Land Cover Change Detection by Using Remote Sensing Data in Akaki River Basin Adimasu Woldesenbet Worako   Land use land cover change (LULCC) is the result of the long time process of natural and anthropogenic activities that has been practiced on the land. GIS and remote sensing are the best tools that support to generate the relevant land use/cover change in the basin. This study was conducted in the Akaki River basin to detect land use land cover changes within the 30 years period (1985-2015) by using landsat imagery data acquired from the GCF. Supervised maximum likelihood algorithm classification were deployed to classify land use/cover into four prominent land use groups and data’s were processed by using ERDAS imagine 2014 and ArcGIS10.1 software. In the basin dominant LULC was agricultural land use which accounts around 56.28% and the second largest is built-up area by 31.51% and the rest, forest(11.9%) and water body(0.31%) coverage were takes t...
Read more