THE EFFECTS OF NATURAL PESTICIDES USAGE AND NATURAL ENEMIES ON SEVERAL CORN VARIETIES AGAINST SPODOPTERA FRUGIPERDA
The attack of "Spodoptera frugiperda" on maize has the potential to disrupt the availability of maize production in Indonesia, particularly in North Sulawesi, where it spread to additional districts of corn planting centers. Observations were made on nine maize varieties (Manado Kuning, Bi...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Agricultural Sciences and Veterinary Medicine, Bucharest
2022-01-01
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| Series: | Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development |
| Online Access: | https://managementjournal.usamv.ro/pdf/vol.22_3/Art38.pdf |
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| Summary: | The attack of "Spodoptera frugiperda" on maize has the potential to disrupt the availability of maize production in Indonesia, particularly in North Sulawesi, where it spread to additional districts of corn planting centers. Observations were made on nine maize varieties (Manado Kuning, Bissi 2, Pertiwi 3, JH 37, Bissi 18, Pioner P 37, Twinn 20, Bissi 228, and Nasa 29) and on the types and populations of pests and natural enemies on farms, which were sprayed with biopesticides, to determine the resistance, the number of eggs laid and the egg laying period; and logs the types of "S. frugiperda" egg parasitoid. The results showed that the Manado Kuning, Pioner P 37 and Nasa 29 corn varieties were the three most abundant varieties in terms of the number of egg groups laid by "S. frugiperda", where each had five. The Bissi 2 and Pertiwi 3 maize varieties had the least with only one egg group each. The earliest time for oviposition occurred at five days of age on the Pioner P 37, Bissi 228, and Nasa 29 varieties, while the latest time occurred on the Bissi 2 variety at 17 days of age. It was determined that the Bissi 2 variety may become the main plant choice, while the Pioner P 37 and Nasa 29 can be used as bait plants. The type of parasitoids obtained were "Telenomus sp." and "Trichogramma sp.", where "Telenomus sp." was obtained more than "Trichogramma sp." Both can be used as a natural insecticide. |
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| ISSN: | 2284-7995 2285-3952 |