scholarly journals The Diversity and Abundance of Egg Parasitoids in Brown Planthopper, Nilaparvata lugens Stål. (Hemiptera: Delphacidae) at Different Rice Growth Phases in Saketi, Pandeglang, Banten

2020 ◽  
Vol 24 (1) ◽  
pp. 1
Author(s):  
Nurullah Asep Abdilah ◽  
Hadi Susilo

An extensive study about egg parasitoid biodiversity in different plant growth stages is an important need. This study was aimed to determine the diversity and abundance of egg parasitoids Nilaparvata lugens on different rice growth stages in Saketi, Pandeglang, Banten. The parasitoids sample was collected three times with two days interval sampling in three villages, i.e. Sodong (location I), Sindanghayu (location II), and Sukalangu (location III) from February to September 2018. Ten plants (as bait: rice that infected by N. lugens eggs) were put during two days along the transect line (100 meters) with 10 m space in between. The findings revealed that the abundance richness (S), the diversity index (H'), and similarity (J') of egg parasitoids of N. lugens were higher in the location I than those in the locations II and III. The study indicated that the diversity and abundance of egg parasitoids of N. lugens decreased in the generative phase of rice growth.

Agrologia ◽  
2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Martua Suhunan Sianipar

Brown Planthopper (Nilaparvata lugens Stal.) is a main pest of paddy. The purpose of this research is to study the population of Brown Planthopper and the natural enemy. The method of this research using survey. Survey was conducted in three experimental plots at JatisariSubdistrict, Karawang District, West Javaand in the greenhouse of the Department of Plant Pests and Deseases, Faculty of Agriculture,  Universitas Padjadjaran. The sample were collected by systematically diagonal using yellow stiky trap and manually or visual counting. The result showed population fluctuation BPH below the economy line where is temperature, humidity and rainfall did not significantly effect to the BPH population. It was indicated by the regression analysis of each temperature Y= (- 24.225 + 1.008 X1 ; R2 =0,020; P/Sign = 0.660),  Humidity  (Y=- 32.337 + 0.424 X2; R2  = 0,124; P/ Sign  = 0.261) and Rainfall (Y=1.707 + 0.090 X3 ; R2  = 0.050; P/ Sign = 0.487). There is a relation between temperature, humidity and rainfall to BPH (Y = - 123 + 2.685 T + 0.649 RH - 0.14 CH; R2 = 0.236; P/ Sign = 0.516) dit not significantly because as the value of significance (P = Sign)  > 0.05.8. The diversity index was moderate 1.88


2018 ◽  
Vol 217 ◽  
pp. 53-65 ◽  
Author(s):  
Finbarr G. Horgan ◽  
Ainara Peñalver Cruz ◽  
Carmencita C. Bernal ◽  
Angelee Fame Ramal ◽  
Maria Liberty P. Almazan ◽  
...  

2018 ◽  
Vol 22 (1) ◽  
pp. 43 ◽  
Author(s):  
Wiwik Sugiharti ◽  
Y. Andi Trisyono ◽  
Edhi Martono ◽  
Witjaksono Witjaksono

Anagrus nilaparvatae is a potential egg parasitoid to control the rice brown planthopper (Nilaparvata lugens Stal.) The parasitoid needs to consume suitable food to maximize its biotic potential and parasitizing ability. This study was aimed to determine the benefits provided by the presence of Turnera subulata and Cosmos sulphureus flowers on the life of A. nilaparvatae. This study consisted of two experiments. The first experiment was designed to determine the effects of the tested flowers on the parasitism and hatching rate of A. nilaparvatae on N. lugens eggs. The flowers were set inside the rearing cage of parasitoid in the presence of N. lugens eggs in Ciherang rice seedlings. In addition, honey and the control (no feed added) were included into the treatments, totalling of four treatments. The parasitism rate of A. nilaparvatae fed with the flowers or honey was similar to those unfed. However, the hatching rate of A. nilaparvatae was much higher on those fed with flower or honey than those unfed. The number of A. nilaparvatae unable to eclose from eggs of N. lugens for the unfed parasitoid was 37.4% in comparison with 8.19 to 15.67% for those fed with flower or honey. The second experiment was a follow-up to address the question on the fitness of progeny of A. nilaparvatae fed with the tested flowers. The flowers and honey did not increase the longevity of A. nilaparvatae progeny. However, A. nilaparvatae fed with flowers or honey produced progeny that resulted in higher number of offspring compared to those unfed. C. sulphureus flower significantly increased the number of offspring produced by A. nilaparvatae. This suggest that the diet of the parental parasitoid determines the fitness of the progeny. Improving the hatching rate and the fecundity of progeny produced by the adults of A. nilaparvatae fed with the flower of T. subulata and C. sulphureus would contribute to the increasing population of this parasitoid which could lead to a better control of N. lugens in the rice field. IntisariAnagrus nilaparvatae merupakan parasitoid telur yang potensial untuk mengendalikan serangan wereng batang cokelat (Nilaparvata lugens Stal.). Parasitoid perlu mendapatkan sumber pakan yang sesuai untuk memaksimalkan potensi biologis dan kemampuan memarasit inang. Penelitian ini bertujuan untuk mengkaji manfaat pemberian bunga Turnera subulata dan Cosmos sulphureus pada kehidupan A. nilaparvatae. Penelitian ini terdiri dari dua percobaan. Percobaan pertama dirancang untuk mengetahui pengaruh bunga yang diuji terhadap tingkat parasitasi dan penetasan telur A. nilaparvatae pada telur N. lugens. Bunga diletakkan di dalam tabung rearing parasitoid yang di dalamnya terdapat bibit padi varietas Ciherang yang mengandung telur N. lugens. Selain itu, terdapat pula perlakuan madu dan kontrol (tanpa bunga dan tanpa madu), dengan total empat perlakuan. A. nilaparvate yang diberi pakan bunga atau madu memiliki tingkat parasitasi yang sama dengan yang tidak diberi pakan. Namun, tingkat penetasan telur A. nilaparvatae yang diberi pakan bunga atau madu jauh lebih tinggi daripada yang tidak diberi pakan. Jumlah A. nilaparvatae yang tidak menetas dari telur N. lugens pada parasitoid yang tidak diberi pakan adalah 37,4% dibandingkan dengan parasitoid yang diberi pakan bunga atau madu yang berkisar 8,19 - 15,67%. Percobaan kedua adalah tindak lanjut untuk menjawab pertanyaan tentang kebugaran keturunan A. nilaparvatae yang diberi pakan dengan bunga yang diuji. Bunga dan madu tidak meningkatkan lama hidup keturunan A. nilaparvatae. Namun, A. nilaparvatae yang diberi pakan dengan bunga atau madu menghasilkan keturunan yang memiliki fekunditas lebih tinggi dibandingkan dengan keturunan dari A. nilaparvatae yang tidak diberi pakan. Bunga C. sulphureus secara signifikan mampu meningkatkan jumlah keturunan yang dihasilkan oleh A. nilaparvatae. Ini menunjukkan bahwa jenis pakan induk parasitoid menentukan kebugaran keturunannya. Peningkatan penetasan dan fekunditas dari keturunan yang dihasilkan oleh induk A. nilaparvatae yang diberi pakan bunga T. subulata dan C. sulphureus akan berkontribusi pada peningkatan populasi parasitoid sehingga dapat mengendalikan serangan N. lugens di pertanaman padi dengan lebih baik.


2019 ◽  
Vol 23 (1) ◽  
pp. 68
Author(s):  
Nike Grace Hanjelina Sinulingga ◽  
Y. Andi Trisyono ◽  
Edhi Martono ◽  
Buyung Hadi

Outbreaks of the rice brown planthopper, Nilaparvata lugens Stal., tend to increase in 2017. There has been significant interest to reduce reliance on pesticides by manipulating habitat plant species and communities to benefit natural enemies of insect. Flowering plants as refuge can contribute in enhancing the ecosystem services. This study aimed to assess the benefit of flowering plants as refuge to improve the role of egg parasitoids of brown planthopper. We sampled three rice fields: rice field adjacent to refuge, far from refuge, and rice field with no refuge using trapping procedure. We found two genera of parasitoid in Banyumas: Oligosita and Anagrus. The parasitism in the three rice fields was 46.14, 43.05 and 42.32%, respectively, showing no differences. However, the number of parasitoids emerged from the traps placed in the rice field with refuge was higher (31.08 adults/trap) than the other two rice fields (25.67 and 20.71 adults/trap). In addition, the number of unhatched parasitoids was lower in the rice with refuge (5.9%) compared to no refuge (14.54%). These findings show that the refuge provides better environments for the parasitoid by improving the number of progeny produced which eventually could increase their role in managing N. lugens population.


Agrikultura ◽  
2018 ◽  
Vol 29 (2) ◽  
pp. 82
Author(s):  
Martua Suhunan Sianipar

ABSTRACTPopulation fluctuation and natural enemy diversity of brown planthopper (Nilaparvata lugens Stal.) in the rice lowlands of Wiralodra University Area, Indramayu Regency, West JavaBrown Planthopper/BPH (Nilaparvata lugens Stal.) is a main pest of paddy. The purpose of this research was to study the population fluctuation and natural enemy diversity of BPH in rice plants. The research was carried out with a survey method conducted on three experimental lands located in the lowlands of Wiralodra University, Singaraja Village, Indramayu District, Indramayu Regency, West Java and in the greenhouse of the Department of Plant Pests and Diseases, Faculty of Agriculture, Universitas Padjadjaran from June to August 2015. The samples were collected by systematically diagonal sampling method using yellow stiky trap and manually or visual counting. The result showed that the BPH population fluctuations were below BPH economic threshold the results of correlation analysis showed that temperature, humidity and rainfall did not have a significant influence on the abundance of the BPH population. This is indicated by the results of regression analysis of temperature (Y = - 49.9 + 1.71 X1; R2 = 0.055; P/Sign = 0.484), humidity (Y = - 41.829 + 0.598 X2; R2 = 0.457; P/Sign = 0.016), and rainfall (Y = 2.845 + 0.512 X3; R2 = 0.217; P/Sign = 0.127), respectively. The relationship between temperature/T, humidity/RH and rainfall/CH on WBC (Y = - 94.2 + 3.00 T + 0.002 RH + 0.804 CH; R2 = 0.581; P/ ign = 0.062) had a significance level > 0.05. The natural enemy insect diversity index was in the medium category (1.63).Keywords: BPH, Abiotic factor, Natural Enemy, Lowland riceABSTRAKWereng Batang Cokat/WBC (Nilaparvata lugens Stal.) merupakan hama utama tanaman padi. Penelitian ini bertujuan untuk mempelajari fluktuasi populasi serta keragaman musuh alami WBC pada tanaman padi. Penelitian ini dilakukan dengan metode survei yang dilakukan pada tiga lahan percobaan yang bertempat dataran rendah di wilayah Universitas Wiralodra, Desa Singaraja, Kecamatan Indramayu, Kabupaten Indramayu, Jawa Barat dan di rumah kaca Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran pada bulan Juni sampai Agustus 2015. Metode pengambilan sampel dilakukan secara diagonal menggunakan perangkap kuning berperekat (yellow stiky trap) serta secara manual (visual counting). Hasil penelitian menunjukkan fluktuasi populasi WBC berada di bawah ambang ekonomi WBC dan hasil analisa korelasi menunjukkan suhu, kelembaban dan curah hujan tidak memberikan pengaruh yang signifikan terhadap kelimpahan populasi WBC. Hal ini ditunjukkan dengan hasil analisis regresi masing-masing pada suhu (Y = - 49.9 + 1.71 X1; R2 = 0,055; P/Sign = 0,484), kelembaban (Y= - 41.829 + 0.598 X2; R2 = 0,457; P/Sign = 0,016) dan curah hujan (Y = 2.845 + 0.512 X3; R2 = 0,217; P/Sign = 0,127). Adapun hubungan antara Suhu/T, Kelembaban/RH dan Curah Hujan/CH terhadap WBC (Y = - 94.2 + 3.00 T + 0.002 RH + 0.804 CH; R2 = 0.581; P/Sign = 0.062) memiliki tingkat signifikansi > 0,05. Indeks keragaman serangga musuh alami WBC termasuk kategori sedang (1,63).Kata Kunci: WBC, Fakor Abiotik, Musuh alami, Lahan sawah


2018 ◽  
Vol 22 (2) ◽  
pp. 132
Author(s):  
Endang Warih Minarni ◽  
Agus Suyanto ◽  
Kartini Kartini

This study aims to determine the type and potency of egg parasitoid in controlling brown planthopper (Nilaparvata lugens Stal.) pests in Banyumas regency after the pest’s explosion. This research has been conducted in five districts of the endemic area of brown planthopper in Banyumas Regency, i.e. in  Jatilawang, Cilongok, Kebasen, Sumpiuh, and Kembaran. Each of the  districts was taken 5 sample villages. The testing and calculation of the level of parasitization  were done in the laboratory of Plant Protection, Faculty of Agriculture, University of Jenderal Soedirman, Purwokerto. The research  used nest plot design, where  the first factor was the district and the second factor was the village. Village nested in  district. The data were  analyzed using F 5% test,  followed by 5% DMRT, if there were  any differences found . The results of the study were as follows: (1) The parasitoids found in Banyumas Regency were Gonatocerus sp. and Oligosita sp. with the ability to parasite 26.8−64.73%, and 1.82−31.40%; (2) the presence parasitoid has the potency  to suppress the intensity of brown planthopper attack on the vegetative phase, the intensity of attacks ranged between 6.96−23.58%, with brown planthopper population ranged from 0.84 to 27.36 individuals per hill. IntisariPenelitian ini bertujuan untuk mengetahui jenis dan potensi parasitoid telur dalam mengendalikan hama wereng batang coklat (Nilaparvata lugens Stal.) di Kabupaten Banyumas pasca terjadinya ledakan. Penelitian ini dilaksanakan di lima kecamatan daerah endemik wereng batang cokelat di wilayah Kabupaten Banyumas yaitu Kecamatan Jatilawang, Cilongok, Kebasen, Sumpiuh, Kembaran. Masing-masing kecamatan diambil 5 desa sampel. Pengujian dan penghitungan tingkat pemarasitan dilakukan di laboratorium Perlindungan Tanaman Fakultas Pertanian, Universitas Jenderal Soedirman, Purwokerto. Penelitian menggunakan rancangan petak tersarang,  dengan kecamatan sebagai faktor pertama  dan desa sebagai faktor kedua. Desa tersarang pada kecamatan. Data dianalisis menggunakan uji F 5%, apabila ada perbedaan dilanjutkan dengan uji banding ganda DMRT 5 %. Adapun hasil penelitian adalah sebagai berikut: (1) Parasitoid yang ditemukan di Kabupaten Banyumas adalah Gonatocerus sp. dan Oligosita sp. dengan kemampuan memarasit 26,8−64,73%, dan sebesar 1,82−31,40 %, (2) keberadaan parasitoid berpotensi menekan intensitas serangan hama wereng batang cokelat pada fase vegetatif, intensitas serangan berkisar antara 6,96−23,58%, dengan populasi wereng batang cokelat berkisar 0,84−27,36 individu per rumpun.


PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47413 ◽  
Author(s):  
Jiranan Piyaphongkul ◽  
Jeremy Pritchard ◽  
Jeff Bale

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