Keanekaragaman serangga hama dan persentase biji rusak pada pala (Myristica fragrans) di penyimpanan

Okky Setyawati Dharmaputra, Sunjaya Sunjaya, Ina Retnowati, Nijma Nurfadila


Based on their role, insects in stored foodstuff, especially in nutmeg can be as a pest, i.e. the insect can cause spoilage in nutmeg. This study aims to determine the diversity of insect pest and the percentage of damaged kernels of nutmeg. Nutmeg in- shells was dried using sun- and smoke-drying until its moisture content attained 10%. Nutmeg in-shell and without shell was then packed in jute bag and stored for four months under warehouse conditions. Sampling of nutmeg was conducted after 4 months of storage. Insect population was determined based on the number of adult insects per sample weight. The percentage of damaged kernels was determined by the weight of damaged kernels (g) devided by the sample weight (g). Four insect species were found in nutmeg kernels in almost various treatments. They were Araecerus fasciculatus ((Degeer) (Coleoptera: Anthribidae), Carpophilus dimidiatus (Fabricius) (Coleoptera: Nitidulidae), Oryzaephilus surinamensis (Linnaeus) (Coleoptera: Silvanidae), and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The dominant species was A. fasciculatus. The percentage of damaged kernels derived from nutmeg kernels fallen on the ground, dried either using sun-drying or smoke-drying, either in-shell or without shell, were higher than the kernels derived from ripe fruitswith various treatments. The recommendation of this research result is good postharvest handling of  nutmeg to prevent insect infestation should be conducted by collecting nutmeg derived from ripe fruits picked from the trees, nutmeg in-shell either sun-dried or smoke-dried, and storing nutmeg in-shell.


Araecerus fasciculatus, insect anatomy, insect morphology, nutmeg



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