EFEKTIVITAS FLUBENDIAMIDA DALAM PENGENDALIAN ULAT API Setothosea asigna Van Eecke, ULAT KANTUNG Metisa plana Walker, DAN PENGGEREK TANDAN Tirathaba rufivena Walker SERTA PENGARUHNYA TERHADAP AKTIVITAS KUMBANG PENYERBUK Elaeidobius kamerunicus Faust.EFEKTI

IOP Conf. Ser.: Earth Environ. Sci.

Prasetyo

2022

A field study to test the efficacy of Bacillus thuringiensis subsp. Kurstaki against Tirathaba rufivena, the oil palm bunch moth, has been conducted in early mature (5-year-old) oil palm in Kalianta Estate, Riau. The experiment was conducted following a randomized complete block design, consisting of five concentration treatments, namely 0, 2, 4, 6, and 8 ml/L of suspension. The B. thuringiensis was sprayed directly onto the inflorescences and fruit bunches of selected palm samples every week for a month duration. The result showed that the intensity of T. rufivena attack was continuously declined since the first week after B. thuringiensis application. The decline of attack intensity is in line with the reduction of the larvae population in the affected fruit bunches. This trial demonstrated that B. thuringiensis had high efficacy against the bunch moth with an efficacy value of 74.90 %, 91.18 %, 96.96 %, and 94.77 % achieved at two weeks after application at the concentrations of 2, 4, 6, and 8 ml/L, respectively. This result suggests that B. thuringiensis at the concentration of 4-8 ml/L can be used as a sustainable option for controlling T. rufivena in oil palm plantations.

Section: Resultsmentioning

confidence: 99%

Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena

IOP Conf. Ser.: Earth Environ. Sci.

Prasetyo

2022

“…The homogeneous spray solution will give maximum results. The fogging application was strongly influenced by the homogeneity of the spray solution, the determination of the active ingredients, the fogging machine, and the weather conditions when fogging applications [7].…”

Section: The Mortality Rate In Upper Frondsmentioning

confidence: 99%

The efficacy of single and double tank thermal fogging tool of Bacillus thuringiensis application in oil palm

IOP Conf. Ser.: Earth Environ. Sci.

Prasetyo

et al. 2022

Many oil palm planters argue that the application of Bacillus thuringiensis through fogging can only be conducted using double-tank fogging equipment. It was believed that the use of single-tank fogging will be resulting in low efficacy. The study aimed to evaluate the efficacy of single and double-tank fogging machines trial of B. thuringiensis against Mahasena corbetti in oil palm plantations. Two doses of application, i.e., 0.5 L/ha and 1 L/ha, were tested using each fogging machine. A plot of mock fogging application was used as a control treatment. The result showed that B. thuringiensis have high efficacy against M. corbetti. More than 90% of larvae mortality was observed at 14 day s after application via a single-tank and a double-tank fogging machine. This result suggests that a single-tank fogging machine could be used for B. thuringiensis application without reducing its efficacy against target pests.

“…Bahan aktif seperti deltametrin, sipermetrin, lamda sihalotrin, diazinon, dan asefat dapat diaplikasikan untuk pengendalian ulat api (Susanto et al, 2012). Insektisida berlabel hijau berbahan aktif klorantraniliprol atau flubendiamida merupakan alternatif insektisida yang lebih direkomendasikan penggunaannya karena relatif aman terhadap musuh alami dan serangga penyerbuk (Prasetyo, Sunindyo, & Susanto, 2015;Priwiratama, Rozziansha, & Prasetyo, 2018;Rozziansha, Prasetyo, Pradana, & Susanto, 2019).…”

Section: Strategi Pengelolaan Ledakan Hama Minor Ulat Api Kecil DI La...unclassified

LEDAKAN HAMA MINOR ULAT API KECIL Olona gateri dan Penthocrates sp. (Lepidoptera: Limacodidae) DI PERKEBUNAN KELAPA SAWIT

Pradana

et al. 2020

war

Kegiatan budidaya kelapa sawit di Indonesia telah berlangsung selama lebih dari seratus tahun. Beberapa serangga mengalami proses adaptasi untuk dapat melakukan aktivitas makan dan meletakkan telur pada kelapa sawit sebagai tanaman inang. Akibat interaksi tersebut, terdapat berbagai jenis serangga yang bersifat sebagai hama baik mayor maupun minor. Pada waktu tertentu, populasi hama minor mengalami ledakan misalnya spesies O. gateri dan Penthocrates sp. Hal tersebut terjadi karena pengaruh beberapa faktor seperti dominasi hama utama yang bergeser akibat populasinya menurun. Penurunan populasi dapat terjadi karena berbagai pengaruh seperti terkendali oleh musuh alami, penggunaan insektisida, maupun faktor iklim yang tidak sesuai. Monitoring hama yang akurat dan kontinyu menjadi salah satu kunci sukses dalam mencegah ledakan hama minor maupun hama utama pada umumnya. Kata kunci: Olona gateri, Penthocrates sp., resurgensi, dinamika populasi