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All Journal Plantropica: Journal of Agricultural Science Journal of Tropical Plant Protection BUANA SAINS Jurnal Pengabdian Masyarakat Indonesia Jurnal HPT (Hama Penyakit Tumbuhan)
Tita Widjayanti
Departemen Hama Dan Penyakit Tumbuhan Fakultas Pertanian Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Education Engineering Mathematics Physics Public Health Social Sciences

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Journal : Journal of Tropical Plant Protection

 1 
Leaf and Flower Extracts of Tithonia diversifolia Against Aphis gosypii in Red Chili Plant Toto Himawan; Tari Rahayu; Tita Widjayanti
Journal of Tropical Plant Protection Vol 2, No 1 (2021)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2021.002.1.5

Abstract

Red chili is one of the main commodities in Indonesia. Aphid (Aphis gossypii) is one of the pests that cause damage to the red chili plant. A. gossypii attacks require control measures using plant-based pesticides from the leaves and sunflowers of Mexico. This study aimed to determine the toxicity of leaves and flower of T. diversifolia extracts against A. gossypii. This research consisted of five concentrations (0.1, 0.3, 0.5, 0.7 and 0.9%) and four replications. The LC50 and LT50 were calculated by using probit analysis of the Hsin Chi program. The results showed that the Tithonia diversifolia flower extract had higher toxicity than the leaf extract of 0.48%, which could cause the death of A. gossypii by 50%, while the leaf extract had a concentration of 0.55%. The flower extract caused the fastest 50% mortality (37.42 hours), while leaf extract was 65.63 hours. The leaf and flower extracts can also reduce the number of A. gossypii offspring. 
The Effect of Insecticide Application on Plutella xylostella Linn. and its Parasitoid Diadegma sp. Bambang Tri Rahardjo; Tita Widjayanti; Antika Anggraini
Journal of Tropical Plant Protection Vol 2, No 1 (2021)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2021.002.1.1

Abstract

Cabbage is one of the commodities that mostly cultivated in Indonesia, but the cabbage farmers often suffered losses because of pests' attack. The important pests on cabbage is Plutella xylostella. This study aimed to investigate the effectiveness level of an insecticide with active ingredient carbaryl 85% in controlling P. xylostella which attacks cabbage and its impact on the parasitoid of Diadegma sp. This research uses a randomized block design with six treatments and four replications. The treatments were different concentrations of the insecticide carbaryl 85%. The testing on Diadegma sp. used two methods, directly and indirectly test (residual exposure). The carbaryl 85% was not effective in controlling P. xylostella, but the population was decreasing. The carbaryl 85% with the highest effect in reducing P. xylostella population was 3.0 g/l. The carbaryl 85% did not affect on the mortality of natural enemies (Diadegma sp. parasitoid) after direct and indirect test. 
Co-Authors Antika Anggraini Bambang Tri Rahardjo Intan Siringoringo Istiqomah, Istiqomah Kusuma, Restu Rizkyta Ludji Pantja Astuti Luqman Qurata Aini Mochammad Syamsul Hadi Mochammad Syamsul Hadi Nur Angga Prayoga Silvi Ikawati Tari Rahayu Toto Himawan Toto Himawan Tyssa Ardhining Wandansari Vido Trisna Ramadhan Vindhya Tri Widayanti Widya Pangestika Yogo Setiawan