Otto Endarto
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Studi Biologi Kutu Sisik Lepidosaphes beckii N. (Homoptera: Diaspididae) Hama pada Tanaman Jeruk Otto Endarto; Susi Wuryantini
Jurnal Hortikultura Indonesia Vol. 4 No. 2 (2013): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.17 KB) | DOI: 10.29244/jhi.4.2.98-105

Abstract

ABSTRACTThe objective of this research  was to determine  life -cycle, morphology  of each development stage, including   form, color ,   size,  and fecundity of L. beckii. This research was  carried out in March until August 2006  at Entomology Laboratory,   Indonesian  Citrus  and  Subtropical  Fruits  Research  Institute, Tlekung, Batu. The method of this research included observation of life- cycle of L. beckii, morphology and fecundity. The result of larvae stages period, prepupa, pupa and adult showed  that  L.  beckii  have average life-cycle 31.2 ± 1.4 days with temperatures ranged 26 – 35 0C. Egg of L. beckii was oval with both dull tip, colored white, the average length 0.20 ± 0.05 mm and average width  0.16 ± 0.04 mm, the average amount of eggs produced  was  78.7 ± 2.7. Clowler colored white yellowish   t hin oval, with average length  of  0.21 ± 0.05 mm and width  0.12 ± 0.04 mm. Shield white  cap have average length size  of  0.64 ± 0.71 mm and shield width 0.35 ± 0.11 mm. Shield on instars 2 colored nutbrown and then deep brown, shield have length size 1.37 ± 0.15 mm and width  0.36 ± 0.08 mm. Pre- pupa have body length of 1.67 ± 0.18 mm and width  of 0.39 ± 0.08 mm, whereas pupa have shield length of 2.01 ± 0.2 mm and width of 0.56 ± 0.10 mm. Female adult have average length of shield 2.09 ± 0.21 mm and width   0.79 ± 0.12 mm.Key  words :  citrus, fecundity, life- cycle, morphology, pestABSTRAKPenelitian bertujuan untuk mengetahui siklus hidup, morfologi setiap tahap perkembangan,  L.  beckiiyang meliputi bentuk, warna dan ukuran dan daya tetas telur. Penelitian dilaksanakan pada bulan Maret  -Agustus 2009 di Laboratorium Entomologi Balai Penelitian Tanaman Jeruk dan Buah Subtropika Tlekung Batu.  Penelitian  ini  dilakukan  dengan  metode  deskriptif, pengamatan  dilakukan  dengan  mengamati langsung perkembangan setiap stadia L. beckii. Hasil pengamatan terhadap lama stadia larva, prepupa, pupa dan imago menunjukkan  L. beckii  mempunyai siklus hidup rata- rata 31. 2±1.4  hari dengan suhu 26- 350C. Telur  L. beckii, berbentuk oval dengan kedua ujungnya tumpul dan berwarna putih ukuran telur panjang rata- rata 0.20±0.05 mm dan lebar rata- rata 0.16±0.04 mm Daya tetas telur sebesar 68.29% dengan rata- rata telur  yang  dihasilkan  78.7±2.7  butir.  Crawlers berwarna  putih  kekuningan  dan  berbentuk  oval  pipih, panjang rata- rata 0.21±0.05 mm dan lebar rata- rata 0.12±0.04 mm. White cap  berwarna putih dengan ujung yang runcing berwarna cokelat perisai w hite cap berukuran panjang rata- rata 0.64±0. 71 mm dan lebar ratarat a 0.35±0.11 mm. Instar 2 perisai berwarna cokelat muda lama kelamaan warnanya akan berwarna cokelattua, panjang perisai  1.17 ±0.15 mm dan lebar 0.36±0.08 mm.  Pre- pupa  berwarna cokelat panjang perisai 1.37±0.18 mm dan lebar 0.39±0.08 mm. Pupa berwarna cokelat dengan ujung yang tumpul b erwarna ungu, panjang perisai 1.67±0.18 mm dan lebar 0.56±0.10 mm, Imago betina berwarna cokel at, panjang perisai rata- rata 2.09±0.21 mm dan lebar rata- rata 0.79±0.12 mm.Kata kunci: jeruk, kesuburan, siklus hidup, morfologi,  hama
UTILIZATION OF KAOLIN FOR THRIPS PEST CONTROL IN CITRUS PLANTS Rudi Cahyo Wicaksono; otto endarto
JURNAL AGRONIDA Vol. 5 No. 1 (2019)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (853.19 KB) | DOI: 10.30997/jag.v5i1.1850

Abstract

Citrus is one of the most consumed fruits. The projected demand for citrus fruit in 2015 - 2019 increased by 0.52% / kg / capita / year. However, citrus fruit production fluctuates every year. The average production of citrus fruits in 2011 - 2015 decreased by 1.49% per year. Decreased quality and quantity are due to pest attacks. Thrips attack the very young flower and fruit phase by injuring the surface of the fruit skin. The study was conducted from June to December 2017, in Glagahagung Village, Purwoharjo District, Banyuwangi Regency. The study used a randomized block design with four treatments using kaolin, surround, organim, and non-controlling, each repeated five times. The results of the study provided information that the use of kaolin continuously can suppress thrips pests up to 89.87%, while surround and organim supress up to 85.06% and 77.71% respectively, and can improve the quality of citrus fruits. Keywords: Kaolin, Surround, Thrips
DAYA MANGSA PREDATOR Harmonia axyridis TERHADAP KUTU DAUN Mizus persicae PADA TANAMAN JERUK Otto Endarto; Susi Wuryantini
JURNAL AGRONIDA Vol. 5 No. 2 (2019)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.705 KB) | DOI: 10.30997/jag.v5i2.2311

Abstract

The research aims to determine the prey abilily and preferences of Harmonia axyridisagainst Mizus persicae on citrus. The study was conducted at the screen house and EntomologyLaboratory of the Research Institute for Citrus and Sub-Tropical Fruits, in January-March 2016.The test for prey ability used the first larval stage of H. axyridis to imago for 30 individuals in eacharena. Data were analyzed by counting of M. persicae which eaten per day from each stage, i.e.larva instar, and H. axyridis imago, as well as the average prey during their life cycle. The resultsshowed that the highest prey of H. axyridis occurred in instar larvae 4, which reached 428.3% ofis body weight, with a number of preys 9.81 ± 1.01 head / day. Preferences of H. axyridis in instarslarvae 1,2, and 3 were instar nymphs 1 from M. persicae, and for H. axyridis the instar larvae 4and imago preferred of instar nymph 4. H. axyridis had a life cycle with a range of 6.6 -9.7 days.The duration of egg stage of the H. axyridis was 3 days, the larvae consisted of 4 instars, theduration of the stage for each instar was 2.4 days for instar 1 and 2; 5 days for instar 3; 12 daysfor instar 4, and 18.5 days for imago.Keywords: Prey, predator Harmonia axyridis, Mizus persicae, citrus