Penelitian ini bertujuan untuk melihat stabilitas fisik dari formulasi sediaan krim ekstrak etanol kulit buah pisang Goroho pada konsentrasi 12.5%. Evaluasi sifat fisik meliputi uji organoleptik, homogenitas, pH, daya sebar dan daya lekat. Uji stabilitas dilakukan menggunakan metode cycling test selama 6 siklus dengan menguji kembali sifat fisiknya. Hasil pengujiann sifat fisik (siklus 0) sediaaan krim yaitu uji organoleptik (bau: khas etanol buah pisang; warna: hijau; tekstur: semi solid), homogenitas (susunan homogen), pH 5.04±0.25, daya sebar 3.43±0.12 cm, daya lekat 30.55±2.09 detik, dan uji stabilitas selama cycling test (siklus 1-siklus 6) tidak ada perbedaan yang bermakna.The aim of this research was to determine the physical stability of the cream ethanol extract of Goroho banana peels at a concentration of 12.5%. Evaluation of physical properties includes organoleptic test, homogeneity, pH, dispersibility and adhesion. The stability test was carried out using the cycling test method for 6 cycles by re-testing its physical properties. Test result of physical properties (cycle 0) cream preparation, namely organoleptic test (odor: typical of banana ethanol, color: green, texture: semi-solid), homogeneity (homogeneous arrangement), pH 5.04 ± 0.25, spread capacity 3.43 ± 0.12 cm and power sticky 30.55 ± 0.12 seconds, and the stability test during the cycle test there was no significant difference.

ABSTRAKLedakan populasi hama Promecotheca cumingii Baly (= nucifera Maul.) (Coleoptera : Chrysomelidae) di Sulawesi Utara, pertama kali terjadi pada tahun 2015 di Kecamatan Modayag, Kabupaten Bolaang Mongondow Timur, Sulawesi Utara. Larva dari hama ini merusak daun dengan cara menggerek masuk kedalam lamina daun (leafminers = pengorok daun). Selama hidup larva dan pupa berada dalam liang gerekannya di daun. Serangga dewasa merusak dan meninggalkan bekas gigitan memanjang pada daun. Pada kerusakan berat, tanaman kelapa kelihatan seperti terbakar, sehingga dapat mengurangi produksi kelapa. Penelitian ini bertujuan untuk mempelajari tingkat kerusakan tanaman, populasi hama dan musuh alaminya. Dalam penelitian ini dipilih 3 lokasi di Kecamatan Modayag kemudian masing-masing lokasi dipilih 5 pohon contoh secara acak dalam areal serangan. Dari setiap pohon diambil satu pelepah daun di bagian tengah tajuk, selanjutnya diambil setiap anak daun ke-10 dan dihitung populasi larva, pupa, imago, dan musuh alami. Hasil penelitian menunjukkan populasi larva dan pupa dari hama P. cumingii di Modayag rata 2,2 individu/anak daun atau sekitar 517 individu/pelepah daun kelapa. Kerusakan hama pada kategori serangan berat dan sangat berat dapat mencapai 94,3% dari 140 tanaman contoh yang diamati dengan rata-rata kerusakan antara 70 -85%. Situasi serangan seperti ini, diperkirakan dapat menyebabkan penurunan produksi sampai 95%. Pemanfaatan musuh alami yang menginfeksi hama ini seperti cendawan entomopatogen Beauveria sp. dan Metarhizium sp. mempunyai peluang untuk menekan populasi hama ini dalam jangka panjang dan ramah lingkungan. Konsepsi pengendalian hama terpadu merupakan salah satu alternatif yang tepat dalam pengendalian hama P. cumingii di lapangan, dengan memanfaatkan semua komponen pengendalian yang sesuai, supaya dapat meningkatkan sistem usahatani kelapa yang lebih baik. Kata kunci: Promecotheca cumingii, kerusakan tanaman, musuh alami. ABSTRACTCoconut pest Promecotheca cumingii Baly (= nucifera Maul.) (Coleoptera: Chrysomelidae) outbreaks in North Sulawesi, firstly occurred in 2015 in Modayag sub district, East Bolaang Mongondow Regency, North Sulawesi Province. Larvae of this leafminers chew and burrow into the leaf tissue. Larvae and pupae spend their entire life inside the leaflets. Adults feed on young leaflets and make characteristic thin longitudinal lines on the lower surfaces of the leaflets. Serious damage can cause scorched fronds and might lead to a significant coconut yield losses. The purposes of this research were to study palm damage, pest population and their natural enemies. Three locations were selected on the Modayag Sub District. In each location 5 palms were selected randomly in the area of the pest attack. At each palm one coconut frond was taken in the middle of the canopy, and the leaf damage, population of larvae, pupae, adult, and natural enemies were measured and counted on the leaflet samples that was taken at every 10 th leaflet. The results showed that the average population of larvae and pup...

Organic or biological fertilizer liquid is generally used to improve crop quality in plants grown in-vivo. Liquid organic and inorganic fertilizers have been used as in vitro culture media for orchids and patchouli; it is suspected that liquid biological fertilizers can also be used as in vitro growth medium. The research was conducted to determine the effect of liquid biological fertilizer (LBF) on the growth medium and development of dwarf coconut embryo culture. The study was conducted in laboratory tissue culture Palma Crops Research Institute, December 2020 - May 2021. The study used live combinations of culture mediums, and each used ten explants of dwarf coconut embryos. The results showed that on Eeuwens Y3 100% + 100% sugar medium, all experienced browning, three green shoots (live), and seven brown shoots (dead), the average shoot length was 2.9 cm. Medium LBF 100% without sugar does not undergo browning, and the embryo does not develop. LBF 50% + Eeuwens Y3 50% + 50 % sugar best medium: a minor browning, the highest number of green shoots (8 shoots), average shoot length was 4.1 cm.