JURNAL ENFIT : Entomologi dan Fitopatologi

Serangga-Serangga Hama Pada Tanaman Cabai Rawit (Capsicum frutescens L.) Fase Generatif di Desa Dimembe Kecamatan Dimembe Kabupaten Minahasa Utara

Mohamad Iqbal — 2025-02-14

The purpose of this study was to determine the types of insect pests on chilli plants (Capsicum frutescens L.) generative phase in Dimembe Village, Dimembe District, North Minahasa Regency. This research will be carried out for one month, starting from May to June 2023. The research method used is exploratory descriptive with 2 stages, namely sampling in the field and observation in the laboratory which is then presented in descriptive form in the form of tables, figures and graphs. Insect samples were obtained by catching using pitfall trap methods, insect nets, and direct fishing carried out 1 time every week. Arrests were made at diagonally determined points consisting of five subplots measuring 5 × 5 m² on chilli land covering an area of ± 500 m². Insects caught were taken and then identified the type and observed the number of insects. Based on the results of research conducted shows that the types of insect pests found are 4 types, namely Aphis sp., Bemicia sp., Valanga sp., and Nezara sp. the total number of insects found was 16,734, the highest in Aphis sp. which is 8628 individuals and the lowest in Nezara sp. which is 125 individuals.

Penggunaan Beberapa Jenis Daun Tanaman Sebagai Perangkap Terhadap Keong Emas (Pomacea canaliculata Lamarck) Pada Tanaman Padi Sawah (Oryza sativa Linnaeus) di Desa Kolongan Kabupaten Minahasa Utara

Angela Tupelu — 2025-02-14

Rice (Oryza sativa L.) is a primary need for the people of Indonesia. One of the main pests in rice plants is the golden snail. The potential damage that can be caused by golden snails ranges from 10% - 40%. Current control measures for golden snails only rely on synthetic pesticides that can cause negative impacts. The use of several types of plant leaves as traps is an alternative that can be applied to control golden snail pests in rice plants. The purpose of this study was to determine the effectiveness of the use of several types of plant leaves as traps against golden snails (P. canaliculata) on paddy rice plants (O. sativa) in Kolongan Village, North Minahasa Regency. The research method used a completely randomized design (CRD) method with 4 treatments and 5 replicates, namely: (P1) Papaya leaf, (P2) Banana leaf, (P3) Taro leaf, (P4) Control. The research location is Kolongan Village, North Minahasa Regency which has rice paddy plantations in the vegetative phase. The results of this study showed that the average population of golden snail pests, namely papaya leaves averaged 20.89 individuals, taro leaves averaged 17.15 individuals, banana leaves 6.21 individuals and controls 4.4 individuals. This shows that papaya leaves and taro leaves are effectively used as an environmentally friendly control technique to control golden snail pests in paddy rice plants.

Patogenisitas Entomopatogen Beauveria bassiana (Bals.) Vuill. Terhadap Larva Crocidolomia pavonana (F.) pada Tanaman Kubis (Brassica oleracea var. capitata) di Laboratorium

Cinthya Eleita Moningka — 2025-02-14

Crocidolomia pavonana is an important pest on cabbage plants. The use of biological control agents such as the entomopathogenic fungus Beauveria bassiana is an alternative to control C. pavonana. This study aims to determine the pathogenicity of the entomopathogenic fungus B. bassiana with a certain density of conidia on the mortality of C. pavonana larvae based on LT₅₀ and LC₅₀tests.This research was conducted in vitro using a completely randomized design (CRD). With a treatment level of 4 treatments and 3 replications. The number of samples per repetition is 10 larvae and the total sample in one treatment is 30 larvae. Treatment experiments used variations in concentration of B. bassiana conidia density, namely conidia density of 10⁸ conidia/ml (A), 10⁷ conidia/ml (B), 10⁶ conidia/ml (C), and Control (K). The pathogenicity of the entomopathogenic fungus B. bassiana can infect C. pavonana larvae from one day after application. The density concentration of 10⁸ conidia/ml is very good and can cause 100% mortality on the eighth day. The fastest LT₅₀ value was in the treatment with a density of 10⁸ conidia/ml, while the LC₅₀value was found in a concentration with a density of 10⁸conidia/ml.

Persentase Serangan dan Kerusakan Penggerek Batang Cengkeh (Hexamitodera semivelutina Hell.) Berdasarkan Perbedaan Umur Tanaman Cengkeh di Kabupaten Minahasa Selatan

Christmas Arnold Mingkid — 2025-02-14

The purpose of this study was to determine the percentage of attack and damage to the clove stem borer Hexamitodera semivelutina on clove plants of different ages in Wuwuk Village, South Minahasa Regency. This study was carried out for four months, starting from August to November 2022. The research method used is the survey method, namely by making direct observations at the research location. The number of clove trees as plant samples observed for each location amounted to 20 plant trees selected based on plant age. The number of observation location points is six clove in Wuwuk Village so that the total number of sample plants to be observed is 120 plants and multiplied by two as the difference in plant age, namely 10 yearsand 10 years, the total number of plants to be observed is 240 trees Observations of the percentage of attack and damage by clove stem borers were distinguished at two plant ages, namely 10 years old and 10 years old. Based on the results of the study that the percentage of clove stem borer H. semivelutina attacks in the 10-year-old clove plant population ranged from 15-30% with an average of 22.5%, while in the 10 years old clove plant population ranged from 45-60% with an average of 52.5%. Damage based on active holes in the population of 10 years old clove plants in active holes ranged from 3-6 holes with an average of 4.6 holes and for inactive holes ranged from 0-2 active holes with an average of 0.83 active holes while damage at 10 years old in active holes ranged from 6-9 holes with an average of 7.1 holes and for inactive holes ranged from 5-8 holes with an average of 6.1 holes.

Persentase Serangan Hama Penggerek Batang (Scirpophaga innotata Wlk.) Pada Tanaman Padi Organik dan Anorganik Di Desa Winebetan Kecamatan Langowan Barat

Ferny Tewuh Mewengkang — 2025-02-14

Rice, Oryza sativa L. is one of the most important food crops for the Indonesian population because it is a staple food that is high in carbohydrates. Symptoms of an attack on the plant vegetative stage called sundep. In the generative stage, the larvae drill the plants that will panicle, so that the flow of assimilation does not reach the rice grains. Symptoms of attacks in the generative phase are called outs. The research was conducted by purposive sampling. Observations using survey methods on. At each observation location a diagonal line was drawn, so that there were five sub-plots measuring 5 m x 5 m. Each sub-plot at each location was determined to be 300 families as sampling sites. Observation of clumps attacked by S. innotata pest determined 50 clumps per sub-plot. The total observed at each location was 250 clumps.Based on the results of research on the percentage of attacks by the white rice stem borer S. innotata in Winebetan Village, West Langowan District, namely: organic farming of 20.1 percent and inorganic 15.4 percent. In rice cultivation, both organic and inorganic farming in fertilizing must pay attention to the balance of elements N, P, and K.