Brontispa is a serious pest of coconut in the Philippines, having attacked more than 1.6 million coconut trees nationwide. Two years ago, 26 provinces were quarantined due to infestation to save the coconut industry- a vital component of the export economy.
Because of the emergency situation, the Philippine Coconut Authority (PCA) initially recommended the injection of pesticide into the trunks of coconut areas with severe and widespread infestation. However, the said chemicals were not yet registered for use in the country.
Thus, Dr. Leonila Varca and Mr. Lorenzo Fabro of UPLB-CA's National Crop Protection Center-Crop Science Cluster, in cooperation with the PCA in Quezon province, determined whether toxic substances were present in food products derived from coconuts given trunk injections of pesticide.
According to the group's study, the pesticides, when administered correctly, is effective against the larva and adult of the coconut leaf beetle. There is a need though to reapply the pesticides after 30 days in order to protect the coconut longer, thus raising concerns on possible toxicity of coconut products.
The researchers' results showed that the coconut water and coconut milk derived from trees 60 days after injection do not have any pesticide residue, and thus safe to consume. Processing the coconut into ordinary and virgin coconut oil, meanwhile, reduces pesticide concentration to almost zero.
The project, funded by the Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, also noted that the said pesticides have no effect on the common earwig (Chelisoches morio)-the natural enemy of the coconut leaf beetle.
Six-legged livestock -- sustainable food production
11.05.2017 | Faculty of Science - University of Copenhagen
Elephant Herpes: Super-Shedders Endanger Young Animals
04.05.2017 | Universität Zürich
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
23.05.2017 | Event News
22.05.2017 | Event News
17.05.2017 | Event News
23.05.2017 | Physics and Astronomy
23.05.2017 | Life Sciences
23.05.2017 | Medical Engineering