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Journal : AGROTEKBIS

JENIS DAN TINGKAT PARASITASI PARASITOID TELUR PENGGEREK BATANG PADI PUTIH (Scirpophaga innotata WALKER) PADA PERTANAMAN PADI (Oryza sativa L.) DI DUA KETINGGIAN TEMPAT BERBEDA DI KABUPATEN SIGI Mohammad Yunus, Hasriyanty, Edy Junaedi,
AGROTEKBIS Vol 4, No 3 (2016)
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Abstract

This study aims to identify parasitoids species and determine the percentage of parasitism of  white rice stem borer (S. innotata) on paddy rice cultivation at different altitudes (Below 200 m asl and higher than 500 masl). This research was conducted in December 2015 - March 2016, in the village of Vatunonju, Sigi Biromaru Subdistrict and Sejahtera Village, Palolo Subdistrict, Sigi District. Identification of parasitoids was conducted in the Plant Pest and Disease Laboratory, Faculty of Agriculture, University of Tadulako, Palu. The study sites was selected by purposive sampling method. Ten eggs group of white rice stem borer at each location were collected from paddy field  at different altitude to identify their parasitoids and parasitism level. The study found three parasitoids species of white rice stem borer namely Tetrastichus sp., Telenomus sp., and Trichogramma sp.. Telenomus sp. was the dominant species at the low land (200 m asl) paddy fields while Tetrastichus sp. was dominating at the upland (>500 asl) paddy fields with parasitism level were  23.34% and 20.69% respecttively.
PENGARUH KEMANGI DAN KENIKIR SEBAGAI TANAMAN REPELLENT TERHADAP Plutella xylostella Linn. (LEPIDOPTERA:PLUTELLIDAE) PADA BUDIDAYA SAWI ORGANIK Mulyadi, Hadi; Nasir, Burhanuddin; Yunus, Mohammad
AGROTEKBIS Vol 5, No 5 (2017)
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This study aims to determine the effect of basil and marigolds as repellent plants on population density and intensity of attacks of Plutella xylostella and mustard crop production.     The use fulness of this research is for information about the solution in dealing with the attack of    P. xylostella on mustard crop and as pest management of P. xylostella environmentally friendly. The experiment was conducted using a randomized block design method (RBD) consisted of           4 treatments with 3 replications. The treatment consisted of mustard plant is planted in monoculture,  plant basil and marigolds planted together among the mustard plant, basil plants grown with mustard, plant marigolds planted together mustard. Variable observation in this study is the population density, the intensity of P. xylostella, as well as mustrad production. Plant basil and marigolds repellent significant effect on the population density and intensity of P. xylostella and   the production of mustard. Plant basil grown with mustard is the most effective repellent plants treatment compared to other treatments, showed the lowest population density of P. xylostella     (0.1 tail/plant), the lowest attack intensity (1%) and the highest production of mustard 19.52 (tonnes/ha). Key Words: Basil, Marigold, Mustard, Plutella xylostella.
PENGARUH PESTISIDA NABATI BUAH CABAI (Capsicum annuum L) DAN UMBI BAWANG PUTIH (Allium sativum L) TERHADAP MORTALITAS HAMA BAWANG MERAH (Spodoptera exigua Hubner) Nursam, Nursam; Yunus, Mohammad; Nasir, Burhanuddin
AGROTEKBIS Vol 6, No 2 (2018)
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Abstract

Onions (Allium cepa) is one type of horticultural commodities which has great opportunities in the agribusiness sector. The purpose of this study was to determine the effect of botanical pesticide made from chilly (C. annuum) and garlic (A. sativum) on mortality of larvae of S. exigua. The research was carried out in the Laboratory of Plant Pests, Faculty of Agriculture, Tadulako University. The study took place from September to December 2015. This study used a completely randomized design (CRD) with seven treatments; each treatment was repeated three times so there were 21 experimental units. The composition of the treatment were as follows: Control (water only, p0), 2ml fresh chili/100 mlwater (p1),4 ml rotten chili/100 ml water (p2),6 ml fresh garlic/100 ml water (p3), 8 ml rotten garlic/100 ml water (p4), 10 ml mixed of rotten garlic and rotten chili /100 ml water (p5), 12 ml mixed of fresh chili and fresh garlic/100 ml water (p6). Highest rate of S. exigua  mortality was found in the p5 treatment ranging from 83% - 96% at three to four days of the treatment application. It suggest that this application is very effective in controlling the larvae of S .exigua in onion leaves.Keywords: Mortality, Spodoptera exigua Hubner, and Vegetable pesticides.
OBSERVASI JENIS PARASITOID LARVA PENGGULUNG DAUN PISANG Erionata thrax Linnaeus (Lepidoptera: Hesperidae) PADA KETINGGIAN TEMPAT YANG BERBEDA DI KABUPATEN SIGI Rahmawati, Rahmawati; Pasaru, Flora; Yunus, Mohammad
AGROTEKBIS Vol 6, No 2 (2018)
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Banana plant is a plant easily cultivated and is often found to being able to grow and develop well in various agro-ecological conditions. Banana skipper E. Thrax is a destructive pest which make leaves to roll by cutting and feeding a section of a leaf, starting from the edge of the leaf running parallel to the main leaf bone and glued with whitely fine threads discharged by the larvae of E. Thrax. The purpose of this study was to determine the type, quantity, and level of parasitism parasitoid of banana skipper at different altitude sites (lowlands and highland areas). In the highlands, two parasitoids were found namely Bracemeria lasus, and Cotesia erionotae. The percentage of Erionata Thrax was found highest in which of 60 Erionata Thrax samples observed four samples was attacked by Cotesia erionotae (6.667%) at the fourth month of observation. The lowest was Bracemeria lasus (1.176%) in which of 85 samples only one sample attacked at the first month observation.  In the lowlands, the highest percentage was found in the second and fourth month observation where 3.333% of 60 samples was attacked by Cotesia erionotae parasitoids. While the lowest percentage of parasitoid attacks was found at the first month observation in which only one sample was attacked out of 85 samples (1.176%). These results shows that the percentage of parasitoids in the highlands has no significant effect on that of in the lowlands. Keywords: Banana, E.tharax, Parasitoids.
INTENSITAS SERANGAN PENGGEREK BATANG PADI PUTIH (Scirpophaga innotata) WALKER (LEPIDOPTERA : PYRALIDAE) DAN MUSUH ALAMI PADA DUA TEMPAT DENGAN KETINGGIAN YANG BERBEDA Afandi, Afandi; Yunus, Mohammad; Hasriyanty, Hasriyanty
AGROTEKBIS Vol 6, No 4 (2018)
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Rice is the most important food crop in Indonesia, as more than half of populations inIndonesia depends their life on rice produced from rice plants. This research aims to determine the intensity of white rice stem boreron thetwo different places, namely the plateau in the Sejahtra village, Palolo Subdistrict at an altitude of 592 meters above the sea (masl), and the lowland area in Lolu village, Sigi Biromaru Subdistrict, Sigi Regency at an altitude of 171 (masl). Whereas its usefulness is to compare the level of attacks that occur in the field by white rice stem borer. This research was conducted in the rice cultivation area at two different places altitudes and the implementation time from April to July 2016. The research was conducted with the survey method, observation and execution of research. The variable of observation namely, 1) The intensity of S.innotata pests. 2) The number of pest eggs S.innotata group and 3)The types and the numbers of parasitoids. Therw is the difference in the intensity of S.innotata attacks in two areas in different heights. Attacks on Oloboju are higher (35%) while attacks on Sejahtera are lower (10%) and there are three species of parasitoid in the S.innotata'segg, they are parasitoid of Telenomus, sp., Tetrastichus, sp.,and Trichogramma, sp.Telenomus, sp. More dominant to of fendin Oloboju while, sp. More dominant to of fendin Sejahtera.
IDENTIFIKASI CENDAWAN ENTOMOPATOGEN DAN MORTALITAS SERANGGA UMPAN PADA BEBERAPA LAPISAN TANAH DARI PERKEBUNAN KAKAO (Theobroma cacao L.) Yuliana, Yuliana; Anshary, Alam; Yunus, Mohammad
AGROTEKBIS Vol 7, No 1 (2019)
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Cocoa (Theobroma cacao L.) is a plant with high economic value, but in its cultivation technique, is inseparable from pest attack, one of which is cacao fruit borer (Conopomorphacramerella). In an effort to control it, can take advantage of soilborne entomopatogenic fungi found in several layers of soil on cocoa plantations.The aims of this study were to determine the type of entomopathogenic fungi and its effect on bait insects (Chrysalis of C. cramerella). The research took place from August 2017 to completion. Sampling was done at Cocoa Plantation then tested further in Laboratory of Plant and Disease, Agricultur Faculty of Tadulako University.This study used Randomized Complete Design (RCD) method consisting of 3 treatments, namely: Soil on horizon O (L1), horizon A (L2), and horizon E (L3) resectively. Isolation of the fungus was done by using bait insects (Chrysalis of C. cramerella) obtained from the field. Identification of fungi was done macroscopically and microscopically. There are 4 genera of entomopathogenic fungi that can be identified which are Aspergillus, Beauveria, Verticillium and Fusarium.The results showed that the percentage of mortality of test-infected fungi in the horizon O was 20 (100%), A horizon was 20 (100%), and E horizon was 15 (60%).
KEANEKARAGAMAN ARTHROPODA DAN KEPADATAN POPULASI IMAGO PENGGEREK BATANG PADI PUTIH Scirpophaga innotata Wlk. (LEPIDOPTERA : PYRALIDAE) PADA LINGKUNGANPERTANAMAN PADI YANG BERBEDA DIKABUPATEN PARIGI MOUTONG Harman Hr.Komi,Moh Hibban Toana,Mohammad Yunus, Muhammad
AGROTEKBIS Vol 3, No 5 (2015)
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This study aims to determine the diversity of arthropods and population density imago white rice stem borer S. innotata in a different environment paddy crop in the district of Parigi Moutong. This study was conducted in two villages, village Lobu and village Olaya.This research was carried out for 3 months with observation interval one week, months December 2014 to February 2015. This study used a survey method and purposive sampling (selection of sites in a residential environment paddycrop and forest edges are attacked imago white rice stem borer S. innotata), The locations were divided into two rice crops Environment Environmental namely rice crops and the surrounding residential neighborhood on the outskirts of rice planting natural forests. Trapping techniques done in two ways, namely trapping insects in the day 'Pan Trap' (At 07.00 pm to 17.00 pm) and night 'Light Trap "(At 18:00 pm until 5:00 pm) while the population density imago white rice stem borers in two neighborhoods Different calculated based on the results of Arthropods in the can inside the trap. The results showed that the index Arthropod Biodiversity around the settlements amounted to 3,159 while the natural forest outskirt of 3192, this shows that environmental stability in the high category. High category indicates that the steady ecosystem stability and high productivity. Imago population density of white rice stem borer S.innotata around settlement was higher by 332 individuals compared to natural forest outskirt of 178 individuals.