Articles

Found 8 Documents
Search
Journal : JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

SPESIES PARASITOID LIPAPHIS ERYSIMI ASAL SUMATERA SELATAN DAN VARIASI PARASITISASINYA PADA TUMBUHAN INANG YANG BERBEDA Herlinda, Siti; Anggraini, Erise; Irsan, Chandra; Umayah, Abu; Thalib, Rosdah; Adam, Triani
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 12, No 2 (2012): September, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (136.038 KB)

Abstract

Lipaphis erysimi (Hemiptera: Aphididae) is one of the main insect pests on brassicaceous crops. Aphids attack crops by sucking sap from its hosts. Densed population in the initial phase of crop growth could  inhibit growing, loss in yield up to 100%. Experiments were aimed to explore and identify species of  L. erysimi parasitoid in highland areas of South Sumatra, and to  determine potency of the parasitoids to parasitize L. erysimi in laboratory.  The highest parasitism level of L. erysimi (72.40%) was found on 200 aphids which reared on B. juncea.  While, the second highest parasitism level (65.67%) was found on N. indicum.  The number of mummies found on N. indicum was less than on B. juncea.  Of all observations, every treatment  on every tested plant showed that female D. rapae emerged more than male D. rapae (female bias).  The two parasitoids species that parasitized L. erysimi were Diaeretiella rapae and Aphidius sp.  Parasitisation at several location in South Sumatera was highly diverse.  D. rapae was the most abundant parasitoid species on several high lands at South Sumatera.
Uji Efikasi Bioinsektisida Jamur Entomopatogen Berformulasi Cair terhadap Plutella xylostella (L.) Di Laboratorium Nunilahwati, Haperidah; Herlinda, Siti; Irsan, Chandra; Pujiastuti, Yulia; Khodijah, .; Meidelima, Dewi
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 13, No 1 (2013): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (206.748 KB)

Abstract

Efficacy test of liquid bio-insecticide of entomopathogenic fungi in control against Plutella xylostella in the laboratory.  The insect pest P. xylostella could reduce crop production of Brassicaceae. The aim of research was to test the efficacy liquid bio insecticide with active ingredient of Beauveria bassiana and Metarhizium anisopliae fungi to control P. xylostella. Bio-insecticide was applied by spraying  on mustard leaves infested with 50 individuals of third instar larvae of P. xylostella and a density of 1x106 conidia ml-1. Larval mortality was observed every 2 hours and LT50 of larvae was calculated. The study showed that the highest percentage of mortality found in Mt ES and Mt ES (cf) isolates was 99.6%, the lowest mortality at Mt NES isolate was 96.80%. LT50 and LT95 values   Bb ES were the lowest i.e. 2.04 days and 2.95 days. The highest LT50 and LT95 of Mt NES isolate were 2.24 days and 3.32 days. The liquid bio-insecticide of entomopathogenic fungus B. bassiana and M. anisopliae were effective to control the larvae of P. xylostella.
EKSPLORASI, ISOLASI DAN SELEKSI JAMUR ENTOMOPATOGEN PLUTELLA XYLOSTELLA (LEPIDOPTERA: YPONOMEUTIDAE) PADA PERTANAMAN CAISIN (BRASSICA CHINENSIS) DI SUMATERA SELATAN Nunilahwati, Haperidah; Herlinda, Siti; Irsan, Chandra; Pujiastuti, Yulia
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 12, No 1 (2012): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (692.329 KB)

Abstract

Plutella xylostella is the most destructive insect pests of the brassicae family. The research objective was to explore, isolate and select entomopathogenic fungi as biological agents for control of P. xylostella. This study used 20 fungal isolates originating from soil and infected insects around the farmers’ field in lowland and highland of South Sumatra. The fungal isolates were tested to third instar larvae of P.xylostella. The suspension of entomopathogenic fungus was topical inoculated with a density of 1x106 conidia ml-1 on the test insect and five replicates. The result showed that the highest (83%) and the lowest (41%) mortality of the larvae P.xylostella was induced by fungal BPluS and BNIPTr, respectively. Moreover, the shortest (2.1 days) and the highest (4.3days) lethal times of the infected host were induced by fungal BPluS and BNIPTr, respectively.
POTENSI PARASITOID TELUR PENGGEREK BATANG PADI KUNING Scirpophaga incertulas Walker PADA BEBERAPA TIPOLOGI LAHAN DI PROVINSI JAMBI Wilyus, .; Nurdiansyah, Fuad; Herlinda, Siti; Irsan, Chandra; Pujiastuti, Yulia
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 12, No 1 (2012): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (166.547 KB)

Abstract

The research was conducted to analyze the diversity, dispersal and domination of the egg parasitoid species of the yellow rice stem borer Scirpophaga incertulas Walker on several land typologies in Jambi Province.  The study was conducted by survey method, from December 2010 until June 2011.  Samples of egg parasitoids of S. incertulas were collected by baiting parasitoids with eggs of S. incertulas.  The results of the research showed that there were three spesies of the egg parasitoids of S. incertulas found in Jambi Province, the most dominant was Telenomus rowani Gahan, followed by Trichogramma japonicum Ashmead and Tetrastichus schoenobii Ferriere. T. rowani and T. japonicum were found in all wetland ecosystems in Jambi Province (tidal swamp, swampy area, rainfed lowland, lowland technical irrigation, and upland technical irrigation), while T. schoenobii was found only in tidal swamp, swampy area, and lowland technical irrigation.  The highest species diversity of egg parasitoid of S. incertulas was found on tidal swamp (Shannon index 1.047), followed by swampy area, lowland technical irrigation, rainfed and upland technical irrigation area.  The average of proportion of egg masses parasitized by T. rowani, T. japonicum and T. Schoenobii were 22.58, 6.18 and 2.68% respectively. The average of individual eggs parasitized by T. rowani, T. schoenobii, and T. japnicum were 8.41, 1.67 and 1.47%   respectively.
KELIMPAHAN DAN KEKAYAAN ARTROPODA PREDATOR PADA TANAMAN PADI YANG DIAPLIKASI BIOINSEKTISIDA BACILLUS THURINGIENSIS Irsan, Chandra; Sunariah, Fina; Herlinda, Siti; Windusari, Yuanita
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 16, No 1 (2016): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (133.276 KB)

Abstract

Abundance and species richness of the predatory arthropods on paddy treated with Bacillus thuringiensis bioinsecticide. Application of bioinsecticide from bacterial entomopathogen has not been reported yet that can decrease abundance and species richness of predatory arthropods, such as spiders and predatory insects. This research was aimed to analyze the abundance and species richness of predatory arthropods paddy fields applied by B. thuringiensis bioinsecticide on paddy in fresh swamp area. Areas observed were 2 ha paddy field’s at Situ Bagendit variety. Predatory arthropods inhabiting canopy were sampled using sweep but soil dwelling arthropods were trapped using pitfall traps. The result showed that abundance of spiders inhabiting canopy decreased significantly after B. thuringiensis bioinsecticide application on paddy compared to control without bioinsecticide but the abundance of predatory insects were not significantly affected by the bioinsecticide. Application of the bioinsecticide did not significantly affect the abundance and species richness of soil dwelling predatory arthropods, such as spiders and predatory insects.
KERAPATAN DAN VIABILITAS KONIDIA BEAUVERIA BASSIANA DAN METARHIZIUM ANISOPLIAE PADA MEDIA IN VITRO PH RENDAH Rizkie, Lilian; Herlinda, Siti; ., Suwandi; Irsan, Chandra; ., Susilawati; Lakitan, Benyamin
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 17, No 2 (2017): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (128.83 KB)

Abstract

Conidial density and viability of Beauveria bassiana and Metarhizium anisopliae grown on the low-pH in vitro medium. Liquid bioinsecticide with active ingredient from conidial entomopathogenic fungus has major constraints, namely short shelf life due to declining conidial viability and density is caused by low pH in the bioinsecticide carrier. This experiment aimed to measure the loss of conidial viability and density of Beauveria bassiana and Metarhizium anisopliae isolates grown on in vitro medium with low pH. Entomopathogenic fungus isolates were used as much as 28 isolates grown on in vitro medium at low pH, namely pH 5, 4, 3, and 2. The results showed that the fungus isolate that had the highest conidial density on in vitro medium at pH 5 was found on isolates of B. bassiana with code BPcMs (2.583 x 109 conidia mL-1), while the lowest one was found on isolates of B. bassiana with code of BWS Pantura (0.825x109 conidia mL-1). All isolate conidial density from in vitro medium with pH 2 decreased regularly. Conidial density of BPcMs isolate decreased to 2.483 x 109conidia mL-1, as well as BWS Pantura isolate also decreased to 0.425x109 conidia mL-1. The highest conidial viability at pH 5 was found on isolates of B. bassiana with code of BPcMs (51.572%), while the lowest conidial viability was found on isolate of B. bassiana with BTmPc code (15.040%). At pH 2, almost isolates tested had low conidial viability. The conidial viability of isolates BPcMs decreased to 47.037%%, while the isolates BTmPc also decreased to 12.778%. Therefore, the lower of the pH of the in vitro medium was, the lower of conidial viability and density of B. bassiana and M. anisopliae was
KELIMPAHAN DAN KEANEKARAGAMAN SPESIES SERANGGA PREDATOR DAN PARASITOID Aphis gossypii DI SUMATERA SELATAN Riyanto, .; Herlinda, Siti; Irsan, Chandra; Umayah, Abu
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 11, No 1 (2011): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (76.273 KB)

Abstract

 This study was aimed to analysis abundance and species diversity of predatory insects and parasitoid of Aphis gossypii from lowland and highland areas of South Sumatra.    Survey of was conducted in 11 vegetable centers of  South Sumatra.  The results showed that 20 species of predatory insects and 3 species of parasitoids were found from the survey. The predatory insects consisted of 15 species of coccinellid beetles, two species of syrphids, and  one species of chamaemyiid, mantid and staphylinid.  Parasitoid found were 2 species of Aphidiidae (Diaretiella rapae and Aphidius sp.) and a species of Aphelinidae (Aphelinus sp.).  The highest abundance of the predator was found in Soak (42.61 larvae and adults) and the highest abundance of the parasitoid was found in Talang Buruk (25.99 adults).  The highest species diversity of the predator and the parasitoid were found in Soak (15 species and H’= 0.94) and in Talang Buruk (2 species and H’ = 0.27), respectively.  Abundance and species diversity of the predators and parasitoids were higher in the dry season than those in rainy season. Thus, the abundance and species diversity of the predators and parasiotids were higher in the lowland than highland areas in South Sumatra, while the seasons affected the abundance and species diversity of the predators and parasitoids.
Keanekaragaman, Dominasi, Persebaran Spesies Penggerek Batang Padi dan Serangannya pada Berbagai Tipologi Lahan di Provinsi Jambi Wilyus, .; Nurdiansyah, Fuad; Johari, Asni; Herlinda, Siti; Irsan, Chandra; Pujiastuti, Yulia
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 13, No 1 (2013): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Original Source | Check in Google Scholar | Full PDF (491.931 KB)

Abstract

Diversity, domination, and distribution of rice stem borer species and its damage in various land typologies in Jambi Province.  The research was conducted to analyze the diversity, domination, species distribution of rice stem borers (RSB) and its damage on various land typologies in Jambi Province.  The research was carried out using survey method, from December 2010 until June 2011.  Samples of RSB were collected from tidal swamp in Tanjung Jabung Timur District, swampy area in Muaro Jambi District, rainfed lowland in Sarolangun District, irrigated lowland in Merangin District, and irrigated upland in Kerinci District and Sungai Penuh District.  The results showed that there were five spesies of  RSB found in Jambi Province.  Scirpophaga  incertulas Walker (yellow stem borer) was the most dominant of RSB, followed by Sesamia inferens Walker (pink stem borer), Chilo suppressalis Walker (striped stem borer), Chilo polychrysus Meyrick (dark-headed stem borer), and Scirpophaga innotata Walker (white stem borer).  The distribution of S. incertulas, S. inferens, C. suppressalis and C. polychrysus were in all of rice field in Jambi Province, but that of S. innotata was limited over tidal swamp and  rainfield  lowland area. The RSB damage rate was lower than economic thereshold.