1. The Potential of Ethyl Acetate As Substitute Attractant for Red Palm Weevil, Rhynchophorus spp. (Coleoptera: Curculionidae)

    Badrulhadza Amzah1 & Razali Baki2

    1. Malaysia Agricultural Research and Development Institute (MARDI), Persiaran MARDI-UPM, 43400 Serdang, Selangor, Malaysia.
    2. CABI Southeast and East Asia, Persiaran MARDI-UPM, 43400 Serdang, Selangor, Malaysia.

    Abstract: Red palm weevils (RPW), Rhynchophorus vulneratus and R. ferrugineus (Coleoptera: Curculionidae) have been reported as main pests of coconut in Malaysia. These pests are currently managed using integrated control approaches and one of them is by using pheromone traps. Ethyl acetate (EtAc) has the potential to increase the efficiency of the pheromone traps and need to be further evaluated. A study was conducted on coconut plantation areas in Mersing, Johor to evaluate the effectiveness of EtAc in attracting RPW. A total of 20 traps from five treatments were set up from the beginning of March 2017 until early of July 2017. Results showed that the treatments with the combination of pheromone lure and EtAc (T1 and T2) can increase the number of captured weevils into the traps (F=3.9, df=4, p=0.01). Addition of food bait also help in increasing the effectiveness of the trap. The results also showed that the red palm weevil population in Mersing area was low as not many beetles were caught in the traps throughout the study period. Due to the high volatility of EtAc, its dispenser need to be improved so that the semiochemical can be sustained longer to prolong the attractant effect. EtAc can play an important role in the RPW baited pheromone traps that is suited with hot and humid climatic conditions of Malaysia.

    Keywords: Coconut pests, Rhynchophorous, pheromone trapping, ethyl acetate, attractant.

    Pages: 1 – 12 | Full PDF Paper
  2. Collecting and Processing Crowdsourced River Measurements Using Innovative Sensors

    Rigos Anastasios*, Krommyda Maria, Theodoropoulos Theodoros, Tsiakos Valantis, Tsertou Athanasia, Amditis Angelos

    Institute of Communication & Computer Systems (ICCS), National Technical University of Athens, Athens, Greece.

    Abstract: This study presents the process of crowdsourcing and processing of environmental data collected by volunteers. The data consist of river measurements collected during the pilot activities (experiments) of SCENT, an EU-funded research project. The data were collected by volunteers during organised campaigns at the Kifisos river (Attika, Greece). The volunteers used their smartphones/tablets and low-cost portable sensors to collect the measurements. They collected images of water level indicators for the water level, videos of a pre-defined floating object for the water surface velocity and sensor measurements for air temperature and soil-moisture. Since the campaigns involved volunteers with different social and educational backgrounds, in their majority not familiar with the strict process of collecting scientific data, the collected data are further processed in order to ensure a high quality degree.

    Keywords: Flood modelling, innovative sensors, crowdsource data, data analysis, data quality control.

    Pages: 13 – 25 | Full PDF Paper